What Is Reverse Charge VAT and How Does It Apply in Construction or B2B Trade?

A complete UK guide for contractors, subcontractors, Limited Companies and businesses buying or selling services: construction reverse charge, CIS, end users, overseas suppliers, invoices, VAT Returns and common mistakes

Reverse Charge VAT is one of the most misunderstood areas of UK VAT.

A subcontractor may believe that they should always add 20% VAT because they are VAT-registered. A contractor may receive an invoice without VAT and assume it is incorrect. A business buying software, advertising or professional services from abroad may not realise that it must calculate UK VAT itself.

In each case, the basic principle is similar:

Instead of the supplier charging and paying the VAT to HMRC, the customer calculates and accounts for the VAT.

The customer effectively treats itself as both:

the buyer of the service; and
the person responsible for declaring the supplier’s output VAT.

Where the customer can recover all the VAT as input tax, the two entries normally cancel each other out. However, reverse charge VAT is not always tax-neutral. A partially exempt business, a business with non-business activities or a business that cannot recover all its input VAT may have a real VAT cost. (GOV.UK)

The expression “Reverse Charge VAT” is used for several different systems. The most important are:

the domestic reverse charge for building and construction services;
the reverse charge for services bought from businesses outside the UK;
the domestic reverse charge for certain high-risk goods and services, such as mobile phones, computer chips and wholesale energy.

These systems have different conditions and different VAT Return treatment. They should not be confused with each other.

The Verdict at the Beginning

For construction work, the domestic reverse charge will normally apply where all the following are true:

the supplier and customer are VAT-registered in the UK, or are required to be registered;
the customer is required to report the payment under the Construction Industry Scheme;
the work is a construction service covered by CIS;
the supply is standard-rated or reduced-rated, rather than zero-rated;
the supplier is providing construction services rather than merely supplying workers as an employment business;
the customer has not given written confirmation that it is an end user or qualifying intermediary supplier.

Where these conditions are satisfied, the supplier does not collect the VAT. The customer accounts for it through its VAT Return. (GOV.UK)

For general B2B services purchased from abroad, the reverse charge will commonly apply where:

the UK business receives a service from a supplier belonging outside the UK;
the place of supply is treated as the UK;
the service is not exempt;
no special place-of-supply rule changes the result.

For most general-rule B2B services, the place of supply is where the business customer belongs. (GOV.UK)

Reverse charge VAT is not:

a VAT exemption;
a zero-rating;
permission to ignore VAT;
the same as a CIS deduction;
a discount for the customer.

It changes who accounts for the VAT, not the underlying VAT liability.

Why Does Reverse Charge VAT Exist?

Under normal VAT accounting, the supplier charges VAT to the customer, collects the money and later pays the output VAT to HMRC.

For example:

Net construction service: £10,000
VAT at 20%: £2,000
Customer pays supplier: £12,000
Supplier pays the £2,000 VAT to HMRC

This creates a fraud risk. A dishonest supplier could collect the £2,000 VAT from the customer and disappear without paying it to HMRC.

Under the reverse charge:

Net construction service: £10,000
VAT shown as subject to reverse charge: £2,000
Customer pays supplier: £10,000
Customer accounts for the £2,000 through its own VAT Return

The supplier never receives the VAT cash, removing the opportunity for that VAT to be stolen within the supply chain. HMRC introduced the construction reverse charge as an anti-fraud measure, effective from 1 March 2021. (GOV.UK)

Part One: The Domestic Reverse Charge for Construction

When Does the Construction Reverse Charge Apply?

The safest way to analyse a transaction is to work through a sequence of questions.

Question 1: Are both businesses VAT-registered?

The construction reverse charge normally applies only where the supplier and customer are both registered, or required to be registered, for UK VAT.

If the subcontractor is not VAT-registered and is not required to register, it cannot issue a VAT invoice and does not apply the reverse charge.

If the customer is not VAT-registered and is not required to be registered, the supplier normally follows the ordinary VAT rules and charges VAT where appropriate. (GOV.UK)

Question 2: Must the customer report the payment under CIS?

The payment must be within the Construction Industry Scheme.

The most important point is not whether the subcontractor has a 20%, 30% or 0% CIS deduction. The key question is whether the contractor is required to report the payment under CIS.

A subcontractor’s CIS payment status is irrelevant for this purpose. The reverse charge can still apply where the subcontractor has Gross Payment Status and no CIS tax is deducted. (GOV.UK)

DCTaxAgent Insight

CIS determines whether the payment is within the construction reporting system. Reverse Charge VAT determines who accounts for the VAT. They are separate calculations.

Question 3: Is the work a covered construction service?

The reverse charge covers most construction operations that fall within CIS, including:

constructing, altering, repairing, extending, demolishing or dismantling buildings and structures;
civil engineering and works forming part of the land;
roadworks, railways, pipelines, sewers, reservoirs and drainage works;
installation of heating, lighting, air conditioning, ventilation, power, water, sanitation, drainage and fire-protection systems;
painting and decorating;
internal cleaning performed during construction, alteration or repair;
site clearance, excavation, tunnelling, foundations and scaffolding;
landscaping and access works forming part of the construction project. (GOV.UK)

Question 4: Is the service standard-rated or reduced-rated?

The construction reverse charge applies to services that would normally be charged at:

the standard VAT rate of 20%; or
the reduced VAT rate of 5%.

It does not apply to a genuinely zero-rated construction supply because there is no VAT for the customer to reverse charge. UK VAT rates remain 20%, 5% and 0% for 2026–2027. (GOV.UK)

Question 5: Is it a construction service or merely a supply of staff?

This distinction is extremely important.

A labour-only subcontractor who accepts responsibility for completing specified construction work is normally providing construction services. The reverse charge can apply.

An employment business that merely supplies workers who are controlled and supervised by the customer is providing staff. The construction reverse charge does not apply, even where the workers carry out construction work. (GOV.UK)

Question 6: Has the customer declared that it is an end user or intermediary supplier?

An end user or qualifying intermediary supplier may give written notification asking the supplier to use normal VAT rules.

Without a valid written notification, a supplier dealing with a VAT- and CIS-registered customer should normally apply the reverse charge where the other conditions are met. (GOV.UK)

Which Construction Services Are Not Covered?

Certain services are normally outside the construction reverse charge when supplied on their own.

Examples include:

the professional services of architects and surveyors;
engineering, interior-design, exterior-design and landscape-consultancy services;
manufacturing building components, equipment, plant or machinery;
delivering materials to a construction site without carrying out construction work;
installing seating, blinds and shutters;
installing security systems such as burglar alarms and CCTV;
signwriting and the installation or repair of advertisements;
creating or installing items that are purely artistic;
drilling for or extracting oil and natural gas;
mineral extraction operations. (GOV.UK)

However, the contractual reality matters.

A professional or excluded service may form part of a wider single construction supply. Where a single supply contains a reverse-charge element, the treatment may extend to the entire supply unless a specific exception or the optional 5% disregard applies.

Simply placing work on separate invoice lines does not necessarily create separate VAT supplies.

The 5% Disregard

Where only a very small part of a single supply would be subject to the reverse charge, HMRC allows an optional 5% disregard.

If the reverse-charge element is no more than 5% of the total contract value, the parties may agree to treat the supply under normal VAT rules.

The 5% test should be considered using the overall contract value, not invoice by invoice. It is optional and should be agreed by both parties from the beginning of the contract. (GOV.UK)

Example

A supplier manufactures specialist equipment for £19,200 and charges £800 for installation.

The installation element is 4% of the £20,000 contract.

If the parties agree that the 5% disregard applies, the entire supply may be treated under the normal VAT rules.

Without that agreement, the construction element could cause the broader single supply to fall within reverse charge treatment.

The disregard must be used carefully. Artificially understating the value of installation work is not acceptable.

Materials: Does the Reverse Charge Apply to the Whole Invoice?

Usually, yes.

Where a subcontractor provides labour and materials as part of one construction supply, the reverse charge normally applies to the entire VAT-exclusive invoice value.

This remains the case even though CIS deductions are usually calculated only on the labour element after eligible material costs are removed.

For example:

Labour: £7,000
Materials: £3,000
Total net invoice: £10,000

The CIS deduction may be calculated only on the appropriate labour amount, but the VAT reverse charge normally applies to the full £10,000 construction supply. (GOV.UK)

Materials Sold on Their Own

A builders’ merchant selling bricks, timber, plasterboard or other materials without providing construction services normally charges VAT under the usual rules.

A supply of materials alone is not brought into the construction reverse charge simply because the customer is a contractor.

Separate Labour and Materials Contracts

Splitting one commercial arrangement into two contracts does not automatically avoid the reverse charge.

If one contract covers labour and another covers materials for the same work on the same site, HMRC may regard them as a single supply. The reverse charge can therefore apply to both elements. (GOV.UK)

Labour-Only Subcontractor or Employment Business?

The label used on the invoice is not decisive.

HMRC looks at what the supplier is actually providing.

Labour-only subcontractor

The arrangement is more likely to be a construction service where:

the supplier agrees to complete specific work;
the supplier prices the work or agrees a measured rate;
the supplier decides which workers will carry it out;
the supplier remains responsible for the quality of the work;
the supplier must correct defects.

The reverse charge can apply.

Employment business

The arrangement is more likely to be a supply of staff where:

the customer requests a number of workers for specified days;
the workers are charged by the hour or day;
the customer controls how and when they work;
the customer is responsible for the completed work;
timesheets determine the employment business’s invoice.

Normal VAT rules apply and the employment business normally charges VAT. (GOV.UK)

Example

A contractor asks a company to build a brick wall for an agreed price. The company chooses the bricklayers and is responsible for defects.

This is likely to be a labour-only construction service, so the reverse charge may apply.

The contractor instead asks an agency to provide two bricklayers for five days, supervises them directly and accepts responsibility for their output.

This is more likely to be a supply of staff, so the reverse charge does not apply.

What Is an End User?

An end user is a VAT- and CIS-registered business that receives construction services but does not make an onward supply of those construction services.

Common examples can include:

a business refurbishing its own office;
a retailer extending its own shop;
a housing association repairing its own properties;
a landlord carrying out work on its own building;
a property-holding business using construction services to create or improve an asset rather than reselling the construction service itself;
certain local authorities and public bodies.

An end user can choose whether to use the end-user exclusion. It is not automatic.

To be treated as an end user, the customer must notify the supplier in writing. The notification may be provided by email, letter or within an agreed contract. (GOV.UK)

HMRC suggests wording similar to:

“We are an end user for the purposes of section 55A VAT Act 1994 reverse charge for building and construction services. Please issue a normal VAT invoice and charge VAT at the appropriate rate.”

Where valid written confirmation is provided, the supplier charges VAT normally.

Where no confirmation is provided, the supplier should generally apply the reverse charge if all the other conditions are met.

What Is an Intermediary Supplier?

An intermediary supplier is a VAT- and CIS-registered business that:

buys construction services;
resupplies them to a connected or linked end user;
does not materially alter or process those services.

The businesses must generally be connected through a corporate relationship or have a relevant interest in the same land. Landlord-and-tenant arrangements can qualify.

Like an end user, an intermediary supplier must provide written notification for normal VAT rules to apply. (GOV.UK)

Example

A landlord arranges construction work and recharges the same work to a tenant that occupies the property.

The landlord may qualify as an intermediary supplier because both parties have a relevant interest in the same land.

If the landlord gives the supplier written notification, the supplier can charge VAT normally.

Private Homeowners and Domestic Customers

The reverse charge does not apply to work supplied directly to an ordinary private homeowner because the customer is not VAT-registered and is not a CIS contractor.

The builder charges VAT under the normal rules where the work is taxable.

However, this does not mean the main contractor automatically becomes an end user.

Suppose a VAT-registered main contractor hires a VAT-registered subcontractor to renovate a private customer’s house.

The main contractor is making an onward supply of construction services to the homeowner. Therefore, the subcontractor’s supply to the main contractor can still be subject to the reverse charge, even though the final invoice from the main contractor to the homeowner uses normal VAT rules. (GOV.UK)

The chain may therefore look like this:

Subcontractor → main contractor: reverse charge
Main contractor → private homeowner: normal VAT

Zero-Rated Construction Work

Genuinely zero-rated construction services are excluded from the reverse charge because there is no VAT to account for.

This can include qualifying work relating to certain new residential buildings, subject to the detailed conditions in the building and construction VAT rules.

However, not every item connected to a zero-rated project is automatically zero-rated.

A standard-rated service supplied separately in connection with a new-build project may still fall within the reverse charge if the other conditions are met. (GOV.UK)

Do not assume:

“It is a new-build project, so every subcontractor invoice must be zero-rated.”

The VAT treatment depends on the precise supply made by each business.

How Should the Supplier Prepare the Invoice?

A reverse charge invoice must contain the information normally required on a VAT invoice.

It must also clearly state that the reverse charge applies and that the customer must account for the VAT.

Acceptable wording includes:

Reverse charge: VAT Act 1994 Section 55A applies

Reverse charge: Customer to account for VAT to HMRC

The invoice should show:

the net value of the supply;
the applicable VAT rate;
the amount of VAT for which the customer must account, where the software permits;
the amount payable to the supplier excluding that VAT.

The VAT amount must not be included as VAT charged in the total payable to the supplier. (GOV.UK)

Construction Invoice Example

A VAT-registered electrician invoices a VAT-registered main contractor for £10,000 of standard-rated installation work.

The payment is reportable under CIS, and the contractor has not issued an end-user declaration.

The invoice may show:

Electrical installation services: £10,000
VAT rate: 20%
Reverse charge VAT: £2,000
Amount payable to supplier: £10,000
Customer to account for £2,000 VAT to HMRC

The contractor pays the electrician £10,000 before considering any applicable CIS deduction.

The contractor does not pay the £2,000 VAT to the electrician.

How Does the Supplier Complete the VAT Return?

For a domestic construction reverse charge sale, the supplier:

includes the net value of the sale in Box 6;

but

does not include the reverse charge VAT in Box 1.

Using the £10,000 example:

Box 6: £10,000
Box 1: no £2,000 output VAT from this transaction

The supplier has not collected the VAT and is not responsible for paying it to HMRC. (GOV.UK)

How Does the Customer Complete the VAT Return?

The customer receiving the domestic construction reverse charge supply normally records:

the output VAT in Box 1;

recoverable input VAT in Box 4;

the net purchase value in Box 7.

For the £10,000 example:

Box 1: £2,000
Box 4: £2,000, assuming full recovery is allowed
Box 7: £10,000

The construction customer does not normally add this domestic reverse charge purchase value to Box 6.

This is different from the reverse charge treatment of many services bought from overseas, where the value can appear in both Boxes 6 and 7. (GOV.UK)

Does Reverse Charge VAT Always Cancel Out?

No.

For a fully taxable construction business, the customer may declare £2,000 in Box 1 and recover £2,000 in Box 4. The net effect is nil.

For a partially exempt business, the input-tax recovery may be restricted.

Example

A customer receives a £10,000 reverse charge service.

Output VAT in Box 1:

£2,000

The customer is entitled to recover only 50% of the related input VAT.

Input VAT in Box 4:

£1,000

The transaction produces a net VAT cost of:

£1,000

Reverse charge VAT therefore ensures that buying from a supplier who does not charge VAT directly does not give a partially exempt customer an unfair advantage. (GOV.UK)

The Effect on Cash Flow

The reverse charge can significantly affect subcontractors.

Before the scheme, a subcontractor might receive £12,000 from the customer on a £10,000 net invoice and temporarily hold the £2,000 VAT until the VAT payment date.

Under the reverse charge, the subcontractor receives only the £10,000 net amount.

This does not reduce profit, because the £2,000 never belonged to the subcontractor. However, it can reduce day-to-day cash available in the bank account.

Businesses that regularly move from VAT payments to VAT repayments may consider whether monthly VAT Returns would improve cash flow. HMRC specifically advises construction businesses to consider the cash-flow impact. (GOV.UK)

Cash Accounting and the Reverse Charge

A business can remain in the VAT Cash Accounting Scheme, but reverse charge supplies must be handled outside the ordinary cash-accounting rules.

The Cash Accounting Scheme cannot be applied normally to reverse charge transactions.

For reverse charge purchases, the tax point may arise when the invoice is issued, even if the subcontractor has not yet been paid, depending on the relevant timing rules. (GOV.UK)

This is important for contractors who assume:

“I account for all VAT only when money is paid.”

Reverse charge transactions require separate treatment.

Flat Rate Scheme and the Reverse Charge

Reverse charge sales are excluded from the Flat Rate Scheme calculation.

A business making reverse charge sales should not apply its flat-rate percentage to those sales.

A Flat Rate Scheme business that receives reverse charge supplies must calculate and declare the reverse charge VAT separately and may recover the related input VAT under the special reverse charge treatment.

Businesses making a high proportion of reverse charge sales should consider whether remaining within the Flat Rate Scheme is still commercially beneficial, particularly because they normally cannot recover VAT on routine materials and overheads through the scheme. (GOV.UK)

CIS Deductions and Reverse Charge VAT on the Same Invoice

Both systems may apply to one invoice, but they perform different functions.

Consider:

Labour: £8,000
Materials paid directly by subcontractor: £2,000
Net invoice: £10,000
Reverse charge VAT at 20%: £2,000

The customer may calculate a CIS deduction on the appropriate labour amount.

The reverse charge VAT is calculated on the full VAT-exclusive construction supply, including related materials.

CIS tax is not deducted from the reverse charge VAT because the VAT is not being paid to the subcontractor.

The precise cash payment will depend on the subcontractor’s CIS verification status and the eligible material calculation.

Part Two: Reverse Charge VAT on B2B Services From Abroad

The construction reverse charge is a UK domestic system.

A separate reverse charge applies when a UK business purchases certain services from a supplier that belongs outside the UK.

This is often relevant for businesses paying overseas suppliers for:

software subscriptions;
online advertising;
professional consultancy;
legal or accountancy services;
marketing services;
design and development;
licences and intellectual-property services;
data and digital business services.

The exact treatment depends on the place-of-supply rules.

The General B2B Place-of-Supply Rule

For most B2B services, the general rule is:

The service is supplied where the business customer belongs.

If a UK business buys a general-rule service from a supplier in the United States, Romania, France or another country, the place of supply is normally the UK.

The overseas supplier does not usually charge UK VAT. Instead, the UK customer applies the reverse charge. (GOV.UK)

This remains relevant after Brexit. It is not limited to EU suppliers.

Example: Software Service Purchased From the United States

A UK VAT-registered company buys a business software subscription from a US supplier for £1,000.

Assume the service is standard-rated if supplied in the UK.

The company calculates:

£1,000 × 20% = £200 reverse charge VAT

The company normally records:

Box 1: £200
Box 4: £200, if fully recoverable
Box 6: £1,000
Box 7: £1,000

If the company can recover all the VAT, there is no net VAT payment.

If it cannot recover all the VAT, part of the £200 becomes a real cost. (GOV.UK)

Why Does an Overseas Service Go Into Box 6?

Under the cross-border service reverse charge, the UK customer is treated as both making and receiving the supply.

This is why the customer enters the net value in both:

Box 6, as the deemed supply; and
Box 7, as the purchase.

By contrast, a customer buying domestic construction services normally enters the value only in Box 7, together with the VAT entries in Boxes 1 and 4. (GOV.UK)

This difference is a common source of software and bookkeeping errors.

What if the UK Business Is Not VAT-Registered?

A non-VAT-registered UK business cannot simply ignore services received from abroad.

The value of B2B general-rule services received from overseas must normally be added to the business’s own taxable turnover when deciding whether VAT registration is required.

A business can therefore become liable to register even if its own UK sales are below the normal threshold.

The VAT registration threshold remains £90,000 for 2026–2027. (GOV.UK)

Example

A UK consultancy has:

UK taxable sales: £60,000
General-rule services bought from overseas suppliers: £35,000

The combined amount relevant to the registration test may be:

£60,000 + £35,000 = £95,000

The business may be required to register for VAT even though its own sales are only £60,000.

This is particularly relevant to businesses spending large amounts on:

overseas advertising;
foreign consultants;
cloud platforms;
software licences;
group-company management charges.

What if a UK Business Sells Services to an Overseas Business?

For most general-rule B2B services, the place of supply is where the customer belongs.

A UK supplier providing consultancy to a genuine business customer in another country will therefore normally not charge UK VAT.

The customer may be required to apply a reverse charge under its own country’s VAT or sales-tax rules.

The UK supplier should retain evidence that:

the customer is in business;
the customer belongs outside the UK;
the service falls under the general B2B rule;
no special place-of-supply rule overrides the general rule. (GOV.UK)

“Outside the scope of UK VAT” does not mean the income is omitted from the accounts. It describes the UK VAT treatment, not the Corporation Tax or income-tax treatment.

Important Exceptions to the General B2B Rule

Not all services follow the general rule.

Special rules can apply to:

land and property services;
admission to events;
restaurant and catering services;
passenger transport;
work physically performed on goods;
short-term or long-term hire of transport;
telecommunications and electronically supplied services affected by use-and-enjoyment rules.

A service relating directly to land may be supplied where the land is situated, rather than where the customer belongs.

The precise nature of the service must therefore be identified before applying the reverse charge. (GOV.UK)

What if the Overseas Supplier Charges UK VAT?

Having a UK VAT number does not always mean an overseas supplier should charge UK VAT.

For general-rule services where the supplier belongs outside the UK and the UK customer must apply the reverse charge, the reverse charge can still apply even if the supplier has a UK VAT registration number.

If VAT has been charged incorrectly, the customer should ask the supplier to correct the invoice. The customer should not assume that incorrectly charged VAT can safely be reclaimed. (GOV.UK)

Part Three: Other Domestic B2B Reverse Charges

Construction is not the only UK domestic reverse charge.

HMRC’s domestic reverse charge rules also cover specified supplies including:

mobile phones;
computer chips;
wholesale gas;
wholesale electricity;
emission allowances;
wholesale telecommunications services;
renewable energy certificates.

These rules are targeted at specific fraud risks and do not apply to ordinary retail transactions merely because both parties are businesses. (GOV.UK)

Mobile Phones and Computer Chips

For mobile phones and qualifying computer chips, the reverse charge generally applies where the VAT-exclusive invoice value of the specified goods is £5,000 or more.

If the threshold is reached, the reverse charge applies to the full qualifying amount, not only the amount above £5,000. (GOV.UK)

The £5,000 de minimis rule does not apply to wholesale gas, electricity, emissions allowances, wholesale telecommunications or renewable energy certificates.

Ordinary Energy Consumption

The domestic reverse charge for wholesale electricity does not mean that every VAT-registered business must reverse charge its office electricity bill.

Supplies of gas or electricity for consumption at homes and business premises are generally outside the wholesale reverse charge.

HMRC also confirmed in March 2026 that electricity supplied at an electric-vehicle charging point is not subject to the electricity domestic reverse charge. (GOV.UK)

Reverse Charge VAT Is Not Postponed Import VAT Accounting

These are separate systems.

Reverse charge VAT normally concerns services or specified domestic supplies.

Postponed VAT Accounting concerns import VAT on goods entering the UK.

A business importing physical goods should not use the service reverse-charge rules merely because the overseas supplier did not charge UK VAT.

The correct treatment may involve:

customs declarations;
import VAT;
postponed VAT statements;
duty;
acquisition rules for certain Northern Ireland transactions.

The nature of the transaction—goods or services—must be identified first.

Who Is Responsible for Checking the Construction Reverse Charge?

Both supplier and customer have responsibilities.

The supplier should take reasonable steps to confirm:

the customer’s VAT registration;
whether the customer is required to report the payment under CIS;
whether the service is within scope;
whether the customer has provided end-user or intermediary notification.

The customer remains responsible for accounting for the reverse charge where it should apply, even if the supplier issues an incorrect normal VAT invoice.

HMRC guidance states that where VAT was wrongly charged instead of applying the reverse charge, the customer may still be assessed for the reverse charge output VAT. The customer may have to recover the incorrectly paid VAT directly from the supplier rather than HMRC. (GOV.UK)

What Happens if VAT Is Charged Incorrectly?

Supplier charges VAT when the reverse charge should apply

The customer should normally reject the invoice and request:

a credit note; and
a corrected reverse charge invoice.

The customer should not simply reclaim the incorrectly charged VAT and ignore the reverse charge.

Supplier applies the reverse charge when normal VAT should apply

The supplier may still owe the output VAT to HMRC.

This can occur where:

the customer was not VAT-registered;
the payment was not reportable under CIS;
the customer had provided a valid end-user notification;
the service was a supply of staff;
the work was outside the construction scope.

The supplier may need to issue a corrected VAT invoice and account for the VAT.

Credit notes

Where the value of a reverse charge supply changes, the credit note should make clear that the reverse charge applies and state the reduction in the VAT for which the customer must account.

Both businesses must make corresponding VAT Return adjustments. (GOV.UK)

Five Detailed Practical Examples

Example 1: Subcontractor to Main Contractor

A VAT-registered plumbing company installs a full heating system for a VAT-registered main contractor.

The payment is reportable under CIS. The work is standard-rated. The contractor has not declared end-user status.

The plumbing company invoices:

Net work: £15,000
Reverse charge VAT at 20%: £3,000
Amount payable: £15,000

The supplier includes £15,000 in Box 6.

The contractor includes:

£3,000 in Box 1;
recoverable VAT in Box 4;
£15,000 in Box 7.

The reverse charge applies.

Example 2: Builder Working Directly for a Homeowner

A VAT-registered builder renovates a private individual’s house for £30,000 plus VAT.

The homeowner is not VAT-registered and is not a CIS contractor.

The reverse charge does not apply.

The builder issues a normal VAT invoice:

Net amount: £30,000
VAT at 20%: £6,000
Total payable: £36,000

Example 3: Business Refurbishing Its Own Office

A VAT- and CIS-registered property company hires a contractor to refurbish an office that it will occupy itself.

The company is not making an onward supply of those construction services.

It gives the contractor a written end-user declaration.

The contractor issues a normal VAT invoice and charges the appropriate VAT.

Without the written declaration, the contractor may have been required to apply the reverse charge.

Example 4: Materials and Installation

A subcontractor supplies and installs windows:

Windows and related materials: £18,000
Installation: £7,000
Total: £25,000

The work forms one supply of construction services.

The reverse charge generally applies to the full £25,000, not only the £7,000 installation charge.

The result is not changed merely because the materials and labour are listed separately.

Example 5: Overseas Advertising Platform

A UK VAT-registered company pays £5,000 to an overseas digital advertising supplier.

Assume the supply falls under the B2B general rule and would be standard-rated in the UK.

The UK company calculates:

£5,000 × 20% = £1,000 VAT

It normally records:

Box 1: £1,000
Box 4: £1,000, if fully recoverable
Box 6: £5,000
Box 7: £5,000

The overseas supplier is paid £5,000.

Common Mistakes

Adding VAT Because Both Businesses Are VAT-Registered

VAT registration alone does not mean the supplier should charge VAT.

For covered construction services, VAT registration on both sides may be one of the reasons the reverse charge applies.

Assuming Every Construction Invoice Is Reverse Charged

The reverse charge does not apply automatically to all building work.

The customer’s VAT and CIS position, the VAT liability, the service type and end-user status must all be checked.

Confusing CIS Deductions With VAT

CIS deduction rates of 0%, 20% or 30% do not determine the VAT treatment.

A subcontractor with Gross Payment Status can still issue a reverse charge invoice.

Applying the Reverse Charge Only to Labour

Where labour and materials form one construction supply, the reverse charge normally applies to the full net value.

The CIS materials deduction does not determine the VAT base.

Treating Agency Workers as Labour-Only Subcontractors

A supply of staff by an employment business normally follows ordinary VAT rules.

A labour-only subcontractor responsible for delivering the work can fall within the reverse charge.

Forgetting the End-User Declaration

End-user treatment is optional and requires written notification.

The supplier should not rely only on an informal telephone conversation.

Charging Zero VAT Without Reverse Charge Wording

A reverse charge invoice is still a VAT invoice.

It must state that the reverse charge applies. An invoice simply showing “VAT £0” may wrongly suggest that the service is zero-rated.

Entering Domestic Construction Purchases in Box 6

For domestic construction reverse charge purchases, the customer normally records the net value in Box 7, not Box 6.

Cross-border general-rule services have different Box 6 treatment.

Assuming Reverse Charge Has No Cost

The entries cancel only where the customer can recover the full input VAT.

Partial exemption or non-business restrictions can create a real liability.

Supplier Checklist

Before issuing a construction invoice, the supplier should confirm:

Is the customer VAT-registered or required to be registered?
Must the customer report the payment under CIS?
Is the service within the construction operations covered by CIS?
Is it standard-rated or reduced-rated?
Is this construction work rather than a supply of staff?
Has the customer provided valid written end-user or intermediary notification?
Does the invoice clearly state “reverse charge”?
Has the amount payable excluded the VAT for which the customer is responsible?
Will the net sale be entered correctly in Box 6?
Is the transaction recorded with supporting evidence?

Customer Checklist

Before paying or posting a construction invoice, the customer should confirm:

Is the supplier’s VAT number valid?
Is the payment reportable under CIS?
Is the work within the construction reverse charge?
Is the VAT rate 20% or 5%, rather than zero-rated?
Is the supplier performing construction work or merely providing staff?
Have you chosen to declare end-user or intermediary status?
Does the invoice state the reverse charge treatment?
Is the reverse charge VAT entered in Box 1?
Is only the recoverable amount entered in Box 4?
Is the net purchase entered in Box 7?
Has any CIS deduction been calculated separately?
Are invoices, declarations and supporting checks retained?

Verdict: Reverse Charge VAT Is Simple in Principle but Detailed in Practice

The basic idea is easy:

The supplier does not collect the VAT. The customer accounts for it.

The difficulty is deciding when that rule applies.

For construction, you must analyse:

VAT registration;

CIS reporting;

the type of construction service;

the VAT rate;

labour-only work versus supplied staff;

materials and mixed supplies;

end-user and intermediary declarations;

invoice wording;

VAT Return boxes.

For wider B2B trade, you must determine:

where the supplier and customer belong;

whether the transaction concerns goods or services;

the place of supply;

whether a special rule overrides the general B2B rule;

whether the purchase affects VAT registration;

whether the input VAT is fully recoverable.

The most expensive mistake is not always failing to pay VAT.

It can also be:

paying VAT to a supplier that should not have charged it;
reclaiming VAT from an invalid invoice;
forgetting to declare reverse charge output VAT;
treating a taxable service as zero-rated;
applying construction rules to overseas services;
applying overseas-service rules to domestic construction.

The Golden Rule

First identify the exact supply and the relationship between the parties. Only then decide who must account for the VAT.

How DCTaxAgent Can Help

DCTaxAgent can assist businesses, contractors, subcontractors and company directors with the VAT and accounting elements of reverse charge transactions, including:

checking whether construction services fall within the domestic reverse charge;
reviewing VAT and CIS registration status;
distinguishing labour-only subcontracting from supplies of workers;
preparing or reviewing end-user notifications;
checking reverse charge invoices;
calculating CIS deductions separately from VAT;
posting reverse charge transactions in accounting software;
completing VAT Return Boxes 1, 4, 6 and 7 correctly;
reviewing services purchased from overseas suppliers;
identifying reverse charge amounts that affect the VAT registration threshold;
correcting previous VAT Return errors;
reviewing Flat Rate Scheme or Cash Accounting implications.

WhatsApp: 07587 532646

Disclaimer

This article is intended for general, informational and educational purposes.

It does not constitute VAT advice, tax advice, legal advice, CIS advice or accounting advice tailored to an individual transaction.

The correct treatment depends on the exact contract, the nature of the supply, VAT and CIS registration, the customer’s business purpose, the place of supply, the applicable VAT rate, end-user status, input-tax recovery and supporting documents.

Construction contracts involving property development, design-and-build arrangements, landlords and tenants, joint ventures, public bodies, zero-rated residential construction or overseas businesses may require a detailed transaction-specific review.

The information reflects official HMRC guidance available on 31 July 2026.