Have you bought tools, equipment or materials from Romania? How to claim them legally in the UK
A complete guide for CIS subcontractors, sole traders and limited companies: invoices, VAT, imports, windows, doors and construction materials
A builder orders windows for an extension from Romania, together with a made-to-measure external door, several dozen square metres of tiles and a professional laser level. The price is more competitive than in the UK, the quality appears better, and the supplier issues an invoice.
Commercially, the purchase may be an excellent decision. For tax purposes, however, the invoice is only the first part of a much wider evidence file.
HMRC does not decide whether an expense is deductible based on the language of the invoice or the supplier’s country. It will examine the substance of the transaction: who purchased the goods, who paid for them, who imported them, who owns them, which project they were used for, and whether the person claiming the expense is the same person who bore the commercial cost.
Windows, doors and other construction products create a second issue. A product may be entirely deductible in the accounts but still unsuitable for installation if it does not meet the technical requirements and Building Regulations applicable to the project.
The correct question is therefore not merely:
“I have an invoice from Romania. Can I put it through as an expense?”
It is:
“Can I demonstrate, from the original order through to installation, that this purchase belongs to my business and has been treated correctly for accounting, CIS, VAT and customs purposes?”
The conclusion at the outset
Yes, tools, equipment, windows, doors and materials purchased from Romania may be recognised for UK tax purposes.
There is no general rule disallowing an expense simply because the supplier is Romanian. However, the tax treatment depends on the nature of the purchase.
Windows installed in a client’s property will normally be project materials. A laser level or generator used across several sites is business equipment. Tiles purchased for future contracts may constitute stock. Windows purchased for the buyer’s own home remain a personal expense, even where the buyer works in construction.
The same invoice may include consumables, direct materials and assets intended for long-term use. The full invoice value should not therefore be posted automatically to a single accounting category.
For a sole trader, an invoice issued in the individual’s name may be entirely legitimate. For a limited company, the company and its director are legally separate persons, and their finances must be clearly separated. (GOV.UK)
CIS is not the business’s accounting system
The phrase “can I deduct this invoice through CIS?” is common but technically inaccurate.
The Construction Industry Scheme does not determine the business’s profit and does not decide which expenses are deductible for Self Assessment or Corporation Tax. CIS is principally a mechanism under which a contractor withholds part of a subcontractor’s payment and pays it to HMRC in advance.
The usual rates are 20% for registered subcontractors, 30% for subcontractors who are not registered or cannot be verified, and 0% for subcontractors holding gross payment status. The amounts withheld are advance payments towards tax and National Insurance, not the final tax charge calculated on turnover. (GOV.UK)
At the end of the tax year or accounting period, the business calculates separately:
its total income, allowable expenditure, taxable profit and tax liabilities. Only then are the CIS deductions already suffered set against the final liability.
This distinction creates two separate questions:
Can the cost reduce the business’s taxable profit?
and:
Can the cost be deducted before a contractor applies CIS withholding to a particular payment?
The answer may be “yes” to the first question and “no” to the second.
A professional laser level may reduce business profit through an expense deduction or capital allowances. However, because it is used across several sites, it does not automatically become a “material” belonging to the first contract on which it is used.
DCTaxAgent Insight
Accounting determines the profit. CIS determines how much tax is withheld in advance from a payment. A purchase can be tax-deductible without reducing the CIS deduction base on an invoice issued to a contractor.
The material goes into the building. The tool stays with the builder
This is the practical distinction from which every analysis should begin.
Windows, doors, bricks, timber, insulation, plasterboard, cables, pipes, tiles, sanitaryware and fitted furniture are generally consumed or incorporated into the client’s property. Once the work is complete, they no longer belong to the builder.
They are normally direct materials or goods supplied under the construction contract.
A laser level, saw, mixer, generator or compressor follows a different logic. The equipment remains the property of the business and is used repeatedly to generate income across several projects.
For a sole trader using the cash basis, equipment retained and used in the business is generally claimed as an allowable expense. Under traditional accounting, the cost of durable equipment is normally relieved through capital allowances. (GOV.UK)
The Annual Investment Allowance may permit the full cost of most qualifying plant and machinery to be deducted, subject to the general £1 million limit. The limit may be apportioned for shorter accounting periods, and eligibility also depends on the nature of the asset and how it was acquired. (GOV.UK)
There is then the question of stock. A company that purchases 20 standard windows for future projects should not treat them all as though they had already been used. Its records should show which materials remain in storage, which have been installed and which project generated the corresponding revenue. Companies trading in goods must retain adequate records of purchases, sales and closing stock. (GOV.UK)
In other words, an invoice from Romania does not receive one uniform tax treatment merely because it was paid in a single transaction.
The decisive test: who made the purchase?
For a sole trader, the answer is relatively straightforward.
The individual and the business are not legally separate persons. If Ion Popescu trades as “IP Construction”, an invoice addressed to Ion Popescu may belong to the business even where the trading name is not shown.
Payment from a personal bank account does not automatically invalidate the expense. However, the transaction must be clearly identifiable, and the records must distinguish business expenditure from personal costs. HMRC requires invoices, receipts, bank statements and records relating to the goods and stock included in the business accounts. (GOV.UK)
The position is stricter for a limited company.
A company is legally separate from its director. The ideal arrangement is for the company to place the order, for the invoice to be issued in the company’s exact legal name, for the company to own and import the goods, and for payment to be made from its bank account.
Where a director temporarily pays the invoice using a personal card, the expense is not necessarily lost. The company may reimburse the director or credit the amount to the director’s loan account, provided that the purchase was genuinely made for the company and the evidence is consistent.
The difficulty arises where the invoice is in the director’s name, the transport documents are personal, the customs declaration identifies the director as importer, but the company later attempts to claim the expenditure and import VAT as though it had been the original purchaser.
For VAT purposes, HMRC focuses on the identity of the person to whom the supply was made and who uses the goods in the taxable business. The person who physically paid the invoice is not the only relevant test. For import VAT, the right to recovery generally belongs to the owner of the goods who meets the conditions for input tax recovery. (GOV.UK)
For significant purchases, the safest solution is not an improvised explanation at the end of the year. It is to have the invoice corrected before the goods are dispatched.
Windows and doors: materials that change the CIS calculation
Windows and doors ordered from Romania provide a particularly useful example because they are expensive, readily identifiable and usually manufactured for a particular project.
Assume that the subcontractor measures the openings, orders the products, pays the Romanian supplier, organises the import and installs them at the client’s property.
In those circumstances, the cost of the products will normally be a direct cost of the contract.
For CIS purposes, the contractor begins with the gross invoice amount and may deduct VAT, certain consumable stores, fuel used in the work, plant hire for the project, manufacturing or prefabrication costs, and materials paid for directly by the subcontractor. The contractor may request invoices and other evidence of the cost. (GOV.UK)
There is, however, an important limitation:
The amount excluded is the direct cost borne by the subcontractor, not the price at which the subcontractor resells the materials.
An example showing the difference
A subcontractor purchases windows and doors from Romania for £9,000.
The subcontractor invoices the contractor £10,500 for those products, while labour, measuring and installation are invoiced separately at £6,000.
The total invoice, excluding VAT, is:
£10,500 + £6,000 = £16,500
However, the cost of the materials evidenced by the supplier’s invoice and proof of payment is £9,000.
The CIS deduction base is therefore:
£16,500 − £9,000 = £7,500
At a CIS rate of 20%, the contractor withholds:
£7,500 × 20% = £1,500
It is not only £1,200, being 20% of the separately stated labour figure of £6,000.
The £1,500 difference between the cost of the materials and the amount invoiced may represent coordination, currency risk, commercial warranty, supplier management, measuring work or profit margin. For CIS purposes, that amount is not the direct cost of the materials.
Where the subcontractor merely installs windows purchased directly by the contractor or homeowner, the subcontractor cannot record their value as its own expense and cannot deduct them from the CIS base. Only materials that the subcontractor itself purchased and paid for can be treated in this way. (GOV.UK)
A drill does not become a “material” simply because it appears on site
A subcontractor buys a laser level for £1,000 and uses it on ten projects.
The purchase may be entirely legitimate in the accounts. However, the laser is not incorporated into the first building and does not become unusable after the first contract.
Its cost should therefore not be artificially included in the material figure for one contract merely to reduce the CIS deduction.
The position differs for a cutting disc that becomes unusable, fuel consumed by machinery on the job, or equipment hired specifically for the project. CIS guidance excludes qualifying consumable stores and plant hire for the particular work, not the purchase price of every item of equipment owned by the subcontractor. (GOV.UK)
This distinction is especially important for subcontractors who regularly claim CIS refunds. A genuine expense may reduce annual taxable profit without lawfully reducing each payment subject to CIS withholding.
VAT follows a different map
One of the most frequent mistakes is to assume that materials are treated identically for CIS and the VAT domestic reverse charge.
They are not.
For CIS, the qualifying direct cost of materials is deducted before the 20% or 30% withholding rate is applied.
For the VAT domestic reverse charge, where materials are supplied together with construction services as part of a single supply, the reverse charge normally applies to the full value of the invoice. Labour and materials should not be artificially separated to avoid the reverse charge. (GOV.UK)
Returning to the earlier example:
Contract value: £16,500
CIS deduction base: £7,500
Value subject to the reverse charge, where all the conditions are satisfied: £16,500
At 20%, the customer accounts for:
£16,500 × 20% = £3,300 VAT
The subcontractor does not receive this VAT, but the invoice must contain the appropriate reverse-charge wording.
The construction reverse charge generally applies where both supplier and customer are UK VAT-registered, the payment falls within CIS, the services are standard-rated or reduced-rated, and the customer has not notified the supplier that it is an end user or intermediary supplier. A straightforward sale of materials without construction services does not normally fall within the same regime. (GOV.UK)
DCTaxAgent Insight
For CIS, materials may reduce the amount from which tax is withheld. Under the VAT domestic reverse charge, those same materials may remain included in the total value of the supply.
The Romanian invoice and the two types of VAT
An invoice from Romania may create two entirely separate VAT issues.
The first is Romanian VAT charged by the supplier.
The second is UK import VAT arising when the goods enter Great Britain.
These amounts are not interchangeable.
Romanian VAT is not UK input VAT and cannot automatically be entered in Box 4 of a UK VAT Return. Where the Romanian supplier has charged VAT, it must be established whether that treatment was correct for the transaction and for the export of the goods.
Any correction must be discussed with the supplier and, where necessary, a Romanian VAT specialist. In certain circumstances, a UK business may claim a refund of VAT incurred in an EU country under the procedure operated by that country. For many businesses established in Great Britain, this may involve the EU 13th Directive procedure. (GOV.UK)
UK import VAT arises separately when the goods enter Great Britain.
A VAT-registered business may use postponed VAT accounting where the goods are imported for its business, it is entitled to dispose of them—normally as owner—and its VAT registration number is included in the customs declaration. The import VAT is declared and, to the extent recoverable, reclaimed on the same VAT Return. (GOV.UK)
The amount must be supported by the Monthly Postponed Import VAT Statement. Where VAT has been paid through a duty deferment account, the C79 certificate is the principal evidence for recovery. (GOV.UK)
A business that is not VAT-registered cannot recover import VAT through a VAT Return. The irrecoverable amount will normally form part of the cost of the materials or equipment.
Bringing the products in a van does not make the import personal
Following Brexit, goods brought from Romania into England, Scotland or Wales for sale or business use are commercial imports.
This applies whether the goods are transported by courier, haulage company, or by the builder in a personal van or car.
All commercial goods must be declared. There is no personal duty-free allowance for goods brought in for sale or business use. The importer may need an EORI number, must submit the appropriate declaration and must pay any Customs Duty and import VAT due. (GOV.UK)
For goods transported in accompanied baggage or a small vehicle, the simplified declaration is available only where specific conditions are met, including a value below £2,500 and a total weight below 1,000kg. (GOV.UK)
A full load of windows, doors or extension materials may quickly exceed these limits. Using a customs agent and deciding in advance who will act as importer are therefore more than administrative formalities.
An undeclared import is not “corrected” simply because the invoice is later entered into QuickBooks.
HMRC may accept that the goods were purchased for the business and separately conclude that the customs obligations were not met. Tax deductibility and customs compliance are two different tests.
Purchased in Romania does not automatically mean manufactured in Romania
This detail can materially change the final cost of the purchase.
The country in which the supplier is located is not necessarily the customs origin of the goods.
A laser may be purchased in Bucharest but manufactured in China. A window may be assembled in Romania using profiles, hardware and other components originating in several different countries.
To obtain preferential tariff treatment under the UK–EU agreement, the goods must meet the applicable rules of origin. The importer must hold valid evidence, such as a statement on origin issued by the exporter, or sufficient information to rely on importer’s knowledge. The preference must be claimed in the customs declaration. (GOV.UK)
The existence of a Romanian invoice alone is not sufficient evidence that the product has preferential EU origin.
Therefore:
“Purchased in Romania” does not automatically mean “zero Customs Duty”.
Import VAT may still be payable even where Customs Duty is nil.
When cheaper becomes more expensive
Builders often compare the cost of a Romanian window with the quotation from a UK supplier.
That comparison is incomplete.
The real economic cost includes transport, packaging, insurance, customs-agent fees, possible Customs Duty, irrecoverable import VAT, foreign-exchange costs, coordination time, the risk of incorrect measurements, storage and the cost of remedying a damaged product.
There is also the warranty.
A window that is £300 cheaper may become more expensive if the glass arrives cracked, the measurements are incorrect or a replacement component must be manufactured and transported again from Romania.
For a builder supplying and installing the product, the Romanian manufacturer’s warranty does not remove the builder’s commercial responsibility towards the UK customer. The builder remains the first point of contact when the installation does not perform correctly.
The saving must be measured after installation and certification, not at the factory gate.
Tax-deductible does not mean compliant for installation
This is perhaps the most important distinction for windows, doors, insulation and other technical products.
HMRC may accept the value as a business cost. Tax acceptance does not prove that the product can lawfully be placed on the British market or installed in the relevant project.
In Great Britain, CE marking continues to be recognised for construction products, while UKCA may also be used within the applicable regime. Products must nevertheless comply with the relevant sector requirements, standards and conformity documentation. (GOV.UK)
For windows and doors, a serious technical file may include the relevant marking, Declaration of Performance, U-values, glazing specification, air and water performance, wind resistance, hardware characteristics, ventilation details, installation instructions and the manufacturer’s warranty.
In England, the project requirements may involve, among other things, Part L for energy performance, Part F for ventilation, Part K for glazing safety, Part Q for the security of certain new dwellings, and Part B where the product performs a fire-safety function.
The 2026 Approved Documents L and F were published on 24 March 2026. However, earlier versions continue to apply to projects falling within the previous standards, so the relevant document must be identified by reference to the project and the transitional rules. (GOV.UK)
For replacement windows and doors, installers registered under authorised schemes, including FENSA, CERTASS, NAPIT and ASSURE, may self-certify certain work. Where the installer is not registered under such a scheme, Building Control involvement may be necessary. (GOV.UK)
Neither the homeowner nor the installer can replace the ventilation requirements with a declaration stating that the customer does not want trickle vents. The work must comply with the applicable ventilation requirements. (GOV.UK)
DCTaxAgent Insight
The invoice proves the cost. The customs declaration proves the import. The technical documents and Building Regulations certificate support compliance of the work. None of these documents replaces the others.
The same door may receive three different tax treatments
An external door purchased from Romania may receive entirely different tax treatments depending on its intended use.
If it is installed in a customer’s property as part of the contract, it is a direct material or cost of sales.
If it is purchased for stock and has not yet been allocated to a project, it remains in the stock records until it is used or sold.
If it is installed in the company’s own workshop or warehouse, it may become part of the building. Buildings and many structural elements are not treated in the same way as plant and machinery.
The physical product does not determine the tax treatment by itself. Its purpose and economic use are decisive.
This is why an accounting-software description such as “Romanian materials” is insufficient. Good bookkeeping should identify the project, the purpose and the point at which the cost contributed to the related income.
Personal project or business project?
A builder may purchase windows from Romania for an outbuilding at their own home.
The fact that the individual works in construction does not automatically turn the purchase into a business expense.
Where the homeowner orders and pays directly for the products used at their residence, the cost is personal. The builder carrying out the installation charges for labour and for the builder’s own consumables—not for windows purchased by the customer.
The position changes only if the outbuilding belongs to and is used by the business. In that case, legal ownership, private use, the nature of the works, capital allowances and possible property implications must be considered separately.
The “wholly and exclusively” test is not satisfied merely by stating that the space might occasionally be used for work.
For a limited company, putting a personal expense through the company may result not only in a Corporation Tax adjustment but also in consequences for the director’s loan account, remuneration or benefits in kind.
The evidence file that tells one consistent story
For a significant purchase from Romania, a good evidence file should allow the transaction to be reconstructed without contradictory explanations.
The essential documents are the supplier’s invoice, proof of payment, purchase order, packing list, transport documentation, customs declaration and MRN, evidence of origin where customs preference was claimed, the C79 or PVA statement, and accounting records allocating the goods to the relevant project, stock records or asset register.
For windows, doors and technical products, the performance documentation, relevant markings, specifications and Building Regulations certificate should also be retained where required.
A sole trader must generally retain business records for at least five years following the 31 January filing deadline for the relevant tax year. Companies must generally retain Corporation Tax records for up to six years after the end of the accounting period, while VAT records normally have to be kept for at least six years. (GOV.UK)
In practice, invoices and records relating to durable equipment should be retained for as long as they may remain relevant to a future sale, insurance claim, capital-allowance computation or HMRC enquiry.
The most expensive areas of confusion
Most problems do not arise because the goods came from Romania. They arise because the transaction was documented as though several different legal persons were one and the same.
The invoice is in the director’s name, the import is personal, payment is made privately, but the company claims both the expense and the VAT.
Alternatively, the contractor excludes from the CIS calculation the entire price at which the subcontractor resold the windows, even though only the direct material cost could be deducted.
In other cases, Romanian VAT is incorrectly treated as UK input VAT, while the UK import VAT is omitted because the PVA statement was never downloaded.
Another mistake is to classify a laser or generator as a material belonging to one contract. The expense may be genuine, but its CIS classification may be wrong.
Equally risky is the belief that a product with an invoice and CE marking can be installed anywhere. Product conformity, project compliance and certification of the installation are separate tests.
Verdict: the invoice is the beginning, not the complete defence
Tools, equipment, windows, doors and materials purchased from Romania can be deducted legally in the UK.
For a sole trader, an invoice issued in the individual’s name may legitimately belong to the business. For a limited company, the evidential standard is stricter because the company must be kept separate from its director.
Materials incorporated into a project are treated differently from reusable tools. Stock differs from materials already installed. Goods purchased for a private home do not become business expenditure merely because the owner works in construction.
Under CIS, only the direct cost of materials paid for by the subcontractor for the relevant contract may reduce the deduction base. Commercial markup is not a material cost, and tools used across several projects should not be hidden within that category.
For VAT purposes, the same invoice may follow different rules. Materials may be excluded from the CIS calculation but included within the full supply subject to the domestic reverse charge.
For customs purposes, Romania does not automatically mean EU origin, and zero Customs Duty does not mean zero import VAT.
For windows and doors, the tax analysis alone is insufficient. The products must have the correct technical documentation and must be installed in accordance with the applicable Building Regulations.
The golden rule is simple: the invoice, payment, import documents, accounting records, customer invoice and reality of the construction site must all tell the same story.
Where all these elements are consistent, purchasing from Romania may deliver both a genuine commercial saving and a legitimate tax deduction.
Where each document identifies a different purchaser, importer or purpose, the price advantage may be lost through irrecoverable VAT, incorrect CIS calculations, customs charges, penalties or work that cannot be properly certified.
How DCTaxAgent can help
DCTaxAgent can analyse the treatment of purchases from Romania, including the distinction between materials, stock and equipment, the correct calculation of CIS materials, cash-basis treatment and capital allowances, invoices paid personally by a director, the director’s loan account, Romanian VAT, UK import VAT, PVA, C79, conversion into sterling and correct recording in QuickBooks.
For significant imports or technical products, the accounting analysis should be coordinated with a customs agent, the Romanian supplier, a product-compliance specialist and, where necessary, Building Control or an authorised installer.
WhatsApp: 07587 532646
Disclaimer
This article is provided for general information and educational purposes only. It does not constitute personalised tax, accounting, customs, legal, technical or Building Regulations advice.
The precise treatment depends on the business structure, accounting method, identity of the purchaser and importer, nature and use of the goods, VAT status, available evidence and the contractual terms.
The rules for Great Britain and Northern Ireland may differ. Before claiming a significant deduction, recovering import VAT or importing construction products, the documents should be reviewed by reference to the specific transaction.