VAT
Plain English. Practical detail. UK context.
Value Added Tax is a tax charged on taxable supplies by VAT-registered businesses. It is separate from profit, income tax and CIS deductions.
Last reviewed: (editorial review against the public sources listed below).
What it means in practice
Track taxable turnover rather than assuming that the registration test follows your accounting year. GOV.UK currently states a £90,000 registration threshold and describes both a rolling previous-12-month test and an expected-next-30-days test. Other situations can create obligations, so the headline threshold is not a complete decision tool.
State whether prices include VAT and use the correct treatment for the work. Construction can involve different VAT rules, including domestic reverse charge situations between businesses. Do not select a VAT rate simply because a customer calls a job a renovation.
For homeowners
Ask for a clear total including any VAT before accepting a quotation. A VAT charge is not a guarantee of quality, and a business not charging VAT is not automatically doing anything wrong. Whether the business must register depends on the applicable tax rules, not whether it is a plumber, carpenter or builder.
Turnover is not the same as profit
A trade business may buy a substantial amount of material before paying labour and overheads. That does not mean the VAT registration test uses only the cash left after those costs. GOV.UK describes taxable turnover as the value of relevant sales and explains which supplies count. The business needs records which support that figure rather than an estimate based on the bank balance.
The rolling-period test is also different from looking only at a financial year end. A business growing quickly can cross the threshold between annual accounts. The separate expected-next-30-days test has its own rules, so regular monitoring and timely advice are useful.
The description of the work matters
Construction VAT treatment can depend on what is being supplied and the circumstances of the work. A customer calling a job a conversion, renovation or new build is not enough evidence for a tax rate. Likewise, a subcontractor payment can require consideration of VAT rules separately from CIS.
Do not copy a tax treatment from a previous invoice simply because the trade is the same. Give the accountant or adviser a clear description of the property, customer, work and contractual relationship. This encyclopedia does not provide a shortcut decision tree for reduced rates, zero rating or reverse charge treatment.
What a homeowner should compare
When comparing offers, establish the total amount payable for the same scope and whether VAT is included. A figure described as “plus VAT” should not be compared with an inclusive figure as though the totals were identical. Ask for a corrected written quote if the treatment is unclear rather than assuming that a later invoice will resolve it.
VAT registration is an administrative tax status, not a quality accreditation. It does not establish competence, insurance or membership of a trade scheme. Conversely, some businesses can legitimately be below the registration threshold, subject to the applicable rules. Check the actual situation rather than judging solely from whether the quotation has a VAT line.
For a live registration or invoice decision, use current HMRC guidance and appropriate professional advice. This entry records the official threshold as checked on the stated review date and does not predict future Budget changes or the treatment of an individual project.
Keep the agreed quotation and final invoice together, particularly if the scope changes. A change in the commercial total should be distinguishable from a correction to how tax has been presented or calculated.
Practical checks
Keep invoices and check unfamiliar tax treatment with an accountant or HMRC. Thresholds and tax rules can change; use the linked official guidance for a live decision.
Frequently asked questions
Is the VAT threshold based on profit?
No. GOV.UK describes the registration threshold in terms of taxable turnover. Profit after costs is a different figure. This distinction matters even when a business has substantial material costs.
Can the same VAT treatment be used for every construction job?
No. The actual supply, customer, building and statutory conditions matter. A business should use HMRC guidance and accounting advice rather than copy a rate or reverse-charge statement from an unrelated invoice.
Sources and further reading
Public sources and further reading. Sources checked: 8 November 2026. Consult the original for details and later changes.