VAT Registration Threshold UK: When You Must Register at £90,000

You must register for VAT when your taxable turnover exceeds £90,000 in any rolling 12-month period, or if you expect it to exceed £90,000 in the next 30 days alone. Below that threshold, registration is voluntary. The £90,000 figure has applied since 1 April 2024, when it rose from £85,000. Once registered, you charge VAT on taxable supplies, submit VAT returns, and can reclaim VAT on qualifying business purchases.

This guide explains the registration test, what counts as taxable turnover, when voluntary registration makes sense, and what changes in your pricing and admin after you register. Use our UK VAT calculator to work out how 20% VAT affects your prices once registration applies.

The rolling 12-month test

The threshold is not based on your accounting year or tax year. It is a rolling 12-month look-back. On any day, tot up your VAT-taxable turnover for the previous 12 months. If the total exceeds £90,000, you must register within 30 days. Your effective registration date is the first day of the second month after you crossed the threshold.

A business with steady monthly sales of £8,000 has annual taxable turnover of £96,000. It crosses £90,000 partway through month eleven of the rolling period. The owner must monitor turnover monthly, not wait for the accountant's year-end figures. Missing the registration point triggers penalties and backdated VAT charges.

What counts as taxable turnover

Taxable turnover is the total value of supplies that are not VAT exempt. It includes standard-rated, reduced-rated, and zero-rated sales. Zero-rated sales count towards the threshold even though you charge 0% VAT on them. Exempt supplies like insurance brokerage or health services do not count. If you sell only exempt supplies, you do not register for VAT regardless of turnover.

Turnover is the total selling price including any amounts you will charge for VAT once registered, but excluding VAT if you are already registered. For a business approaching the threshold, the test uses the value of sales at the rate that applies to each supply. A bookshop selling only zero-rated books counts the full selling price towards the £90,000 limit.

What is excluded

Capital asset sales, like selling a business vehicle, are generally excluded from taxable turnover. Supplies outside the scope of UK VAT, such as some overseas services, may be excluded depending on the place of supply rules. Interest income and dividends are not trading turnover. If you are unsure whether a particular income stream counts, HMRC's VAT notice 700/1 explains the registration test in detail.

The 30-day forward look

The second trigger is expectation. If you win a contract that will push your turnover above £90,000 in the next 30 days alone, you must register immediately. A consultant billing £95,000 for a single project due within three weeks must register even if the previous 12 months were quiet. The registration date is the date of the supply that triggered the expectation, or the date you realised you would exceed the threshold, if earlier notification was not reasonably practicable.

Voluntary registration

You can register for VAT before you reach £90,000. Voluntary registration makes sense when you have significant input VAT on purchases and your customers are VAT-registered businesses that can reclaim the VAT you charge. A B2B consultant buying software, paying for a coworking space, and invoicing corporate clients often benefits from early registration because the output VAT charged to clients is neutral to them while input VAT on costs is recovered.

Voluntary registration is less attractive when your customers are consumers who cannot reclaim VAT. A hairdresser or personal trainer registering voluntarily must either absorb the 20% VAT out of existing prices or increase prices by 20%, which may lose customers. The commercial decision depends on who bears the VAT cost.

Model the effect on your pricing with the UK VAT calculator before you register voluntarily.

Sole trader vs limited company

The £90,000 threshold applies to the person or entity making the supplies. A sole trader registers in their own name. A limited company registers separately from its director. If you run both a sole trade and a company, each has its own threshold only if they are genuinely separate businesses. Artificial splitting of one business across entities to stay below £90,000 is a known avoidance pattern that HMRC challenges.

Whether you trade as a sole trader or limited company does not change the VAT threshold, but it changes how profits are taxed after VAT. Compare structures with the sole trader vs limited company calculator alongside your VAT planning. A company near the threshold may also be near the Corporation Tax small profits threshold, so both taxes deserve attention together.

What changes when you register

You receive a VAT registration number. You charge VAT at the appropriate rate on taxable supplies. You issue VAT invoices showing your number, the rate, and the VAT amount. You submit VAT returns, usually quarterly, showing output VAT collected and input VAT reclaimed. You pay the net amount to HMRC or receive a refund if input exceeds output.

Your prices to consumers effectively rise unless you absorb the VAT. Your prices to VAT-registered businesses are neutral because they reclaim the VAT. You keep records of all VAT invoices issued and received. Making Tax Digital requires most VAT-registered businesses to keep digital records and file returns through compatible software.

• Add 20% VAT to standard-rated sales on invoices
• Show your VAT number on all invoices
• File VAT returns (usually quarterly)
• Keep VAT records for at least six years
• Use MTD-compatible software for filing

Penalties for late registration

If you should have registered and did not, HMRC can register you compulsorily and assess VAT on sales from the date you should have been registered. You may owe 20% on sales you made without charging VAT, plus interest and penalties. The penalty depends on how late registration was and whether the failure was careless or deliberate. Voluntary disclosure before HMRC discovers the error usually reduces the penalty.

Monitoring the rolling 12-month total monthly is the simplest protection. A spreadsheet with last month's sales and a running total takes minutes to maintain and avoids a five-figure backdated assessment.

Deregistration

You can apply to deregister if your taxable turnover falls below £88,000 and is expected to stay below. Deregistration is not automatic. You must apply to HMRC. Some businesses deregister when turnover drops, then re-register when it rises again. Each registration change affects your pricing and admin, so plan transitions carefully.

VAT registration and EU trade

UK VAT registration is separate from EU VAT obligations. If you sell goods to EU consumers post-Brexit, different rules apply including potential obligation to register for VAT in EU member states depending on volume and platform. If you sell B2B into the EU, the reverse charge may apply. Our EU VAT calculator helps with rate comparisons across countries when you expand beyond the UK.

Planning around the threshold

Some businesses deliberately limit growth to stay below £90,000 and avoid VAT admin. That is a legitimate commercial choice if your customers are price-sensitive consumers. Others accelerate growth and register willingly to appear more established or to reclaim input VAT on equipment. A photographer buying £15,000 of camera gear recovers £2,500 of VAT after registration, which offsets some of the compliance cost.

If you pay yourself from a company through a mix of salary and dividends, VAT registration does not directly change your personal tax. Dividend tax and Income Tax on salary follow their own rules. See our dividend tax guide for how director remuneration interacts with company profits after VAT is accounted for.

How to register

Registration is online through HMRC's Government Gateway. You need your business details, bank account, estimated turnover, and business activity description. HMRC usually issues a VAT number within a few weeks, though you must account for VAT from your registration date even if the number arrives later. You can invoice showing VAT and note that the registration number will follow.

The £90,000 threshold is the gate between being a small trader with simple accounting and being a VAT collector for HMRC. Know your rolling 12-month figure, understand whether your customers can reclaim VAT, and use the UK VAT calculator to price correctly from the day you register. Getting the threshold decision right saves penalties on one side and lost input tax recovery on the other.

Set a calendar reminder to review taxable turnover every month if you are within £15,000 of the threshold. Growth can accelerate quickly in the final quarter of a good year, and the rolling test catches businesses that would miss a fixed annual accounting date. A single large contract can push you over £90,000 in the forward-looking 30-day test even when the previous twelve months were comfortably below the line.

Accountants can register you for VAT, but the legal obligation sits with the business owner. If your bookkeeper spots that turnover has crossed the threshold, act on their advice promptly. Waiting until the year-end accounts are prepared can leave you months into a period when you should already have been charging VAT and filing returns.