Threshold for VAT Registration: FAQ for Personal Tax and Self Assessment Clients

The threshold for VAT registration is £90,000 of VAT taxable turnover in any rolling 12 months, and it is a separate test from your income tax figures. Your Self Assessment return reports profit and income for a tax year, while the VAT threshold looks at a moving 12-month window of taxable sales, so the two can point in different directions.

This FAQ explains how the threshold for VAT registration sits alongside your personal tax. It covers which turnover figure goes where, what registering voluntarily does to your profit, how the £1,000 trading allowance fits in, and why Making Tax Digital (MTD) thresholds are different. It does not repeat the full rules, which we cover elsewhere.

If you want the basics first, read our complete guide to the threshold for VAT registration. If you are ready to register, see our MTD steps for VAT registration. This page answers the personal tax questions that those two do not.

Key takeaways

• The VAT test uses a rolling 12-month window of taxable turnover. Self Assessment uses the tax year from 6 April to 5 April.
• Neither test uses your profit. Both start from sales (turnover) before you deduct expenses.
• Registering voluntarily below the threshold is allowed, but you owe VAT from your registration date, so it changes your pricing and cash flow.
• The £1,000 trading allowance and the VAT threshold are unrelated. Using one has no effect on the other.
• MTD for VAT applies to every VAT-registered business. MTD for Income Tax has its own income threshold and its own start dates.

What is the threshold for VAT registration?

The threshold for VAT registration is £90,000. According to GOV.UK's guidance on registering for VAT, you must register if your total taxable turnover for the last 12 months goes over £90,000, or if you expect to go over it in the next 30 days. This applies to the 2026/27 tax year.

Taxable turnover means the total value of everything you sell that is not VAT exempt. GOV.UK says it includes zero-rated and reduced-rated sales as well as standard-rated ones. For the full explanation, see our complete guide to the threshold for VAT registration.

Is the VAT threshold the same as my income tax turnover?

No. The VAT threshold is a rolling 12-month test on VAT taxable turnover, and it can start in any month. Your income tax figures follow the tax year, which runs from 6 April to 5 April. You can be well under £90,000 for the tax year yet over it across a different 12 months.

The two figures can also differ in content. VAT taxable turnover counts only supplies that are within the VAT system. Your Self Assessment turnover is the total trading income you put on your return. For a driver with only fare income, they are often close. If you also have, say, a small property income or employment, those items belong on your tax return but not in your VAT test.

Why the dates matter

Suppose you start driving full time in November. By the following October you have 12 months of figures. You do not wait until 5 April to check. Our VAT guide for Uber drivers explains how fare income is treated for the test, so we do not repeat that detail here.

A sensible habit is to total your taxable sales at the end of every month for the previous 12 months. Our VAT calculator can help you check figures, and a spreadsheet works too. Keep the monthly totals with your other records.

Do I put VAT-inclusive or VAT-exclusive figures on my Self Assessment return?

If you are VAT registered, the VAT you collect on behalf of HMRC is generally not your income, so your turnover is normally recorded without it. If you are not VAT registered, you do not charge VAT and there is nothing to strip out. The Self Assessment form guidance sets out how to treat VAT, so check the notes for your tax year before filing.

We could not verify the exact wording of the current self-employment form notes on this point during our research, so we do not quote them. Check the self-employment notes on GOV.UK for the tax year you are filing. If you are unsure, ask a qualified accountant before you submit.

The principle is simple. VAT you charge and pay over to HMRC is a pass-through amount. Your income tax profit is built from the VAT-exclusive sales less the VAT-exclusive costs you can deduct. That is why clean bookkeeping matters from the first day you register.

Does the VAT threshold affect how much income tax I pay?

Crossing the threshold does not change your income tax rate by itself. Income tax depends on your taxable profit and your other income. What does change is your pricing and your paperwork: you must charge VAT on taxable sales and send VAT returns, which affects your cash flow and the profit you keep.

For drivers, the practical impact is often on the net profit. If you cannot pass VAT on to your customers, you absorb it. For an overview of what drivers typically pay in total, see our article on how much tax Uber drivers pay.

What happens to my profit if I register for VAT voluntarily?

Voluntary registration lets you reclaim VAT on business purchases, but you must charge VAT on your taxable sales and pay it over to HMRC. Whether your profit rises or falls depends on your customers and costs. GOV.UK confirms you can register below £90,000, and that you owe any VAT due from your registration date.

Think of it as three moving parts. First, you add VAT to your prices or absorb it. Second, you reclaim VAT on costs that carry it, such as some vehicle and equipment purchases. Third, you take on extra admin. The first part usually outweighs the others when your customers are the general public, because they cannot reclaim the VAT you charge.

An illustrative example

This is an illustrative example using an invented driver, Sam. Sam has £40,000 of taxable sales in a 12-month period and £6,000 of costs, of which £2,400 includes VAT of £400. Sam is far below £90,000, so registration is optional.

If Sam raised prices by 20% and customers paid, the result would differ. The point is that voluntary registration is a pricing decision, not just a tax one. Talk to an adviser before you opt in, because you cannot simply undo it without a process.

Does my VAT turnover change if I use the trading allowance?

No. The trading allowance is an income tax relief and has no link to the VAT threshold. GOV.UK says the allowance is £1,000 a year of gross trading income, and you cannot deduct other expenses if you claim it. It does not change what counts as VAT taxable turnover or when you must register.

In practice, a driver who earns more than a few thousand pounds will normally claim actual expenses rather than the allowance. See GOV.UK's guidance on tax-free allowances on trading income. Our guide to allowable expenses for Uber drivers explains what you can deduct instead.

Are the Making Tax Digital thresholds different from the VAT threshold?

Yes. MTD for VAT applies to all VAT-registered businesses, whatever their turnover. MTD for Income Tax is a separate scheme with an income test. GOV.UK says you must use it from 6 April 2026 if your total annual self-employment and property income is over £50,000. Lower thresholds are planned, so check GOV.UK for the current dates.

The MTD for Income Tax figure is based on income before expenses, using the tax year, and it counts self-employment and property income together. The VAT figure is a rolling 12-month test of taxable turnover. A driver could be under £90,000 for VAT yet over £50,000 for MTD for Income Tax. See GOV.UK's guidance on signing up for MTD for Income Tax.

For the digital side of VAT, see our MTD steps for the threshold for VAT registration. For how Self Assessment compares with MTD, read Self Assessment vs Making Tax Digital.

How do I check my position step by step?

You can check your position in a few minutes each month. The aim is to catch a breach early, because the 30-day registration clock starts at the end of the month in which you go over. Follow the steps below and keep the working with your records.

1. List your VAT taxable sales for each of the last 12 months, using the same month-end every time.
2. Add the 12 figures together and compare the total with £90,000.
3. Estimate the next 30 days. If you expect that single period to push you over £90,000, treat it as a trigger.
4. Record the result in a monthly log, even when you are well under.
5. If you are over, register through GOV.UK within 30 days of the end of the month you crossed.
6. Separately, compare your tax year turnover with the MTD for Income Tax figure on GOV.UK.
7. Tell your accountant what you found so your Self Assessment and VAT records match.

What if my turnover falls back below the threshold?

You can ask HMRC to cancel your VAT registration if you stop trading or your turnover falls. GOV.UK's page on cancelling your registration lists the current deregistration rules and time limits. Check it before you assume you are free of VAT.

Deregistering also changes your records. Your final VAT return can include VAT on some assets you still hold, so ask for advice. Our article on bookkeeping for VAT registration explains what to keep.

What mistakes do drivers make with the VAT threshold and personal tax?

Most mistakes come from mixing up the tests. Drivers watch the tax year, miss the rolling window, and register late. Late registration can bring penalties and VAT owed from the date you should have registered, even if you never charged customers, so check GOV.UK's penalty guidance for your case.

• Checking turnover only at 5 April. Penalty risk: late registration and VAT owed backdated.
• Using profit instead of turnover for the VAT test. Consequence: you underestimate your position.
• Putting VAT-inclusive sales in your records as income. Consequence: overstated profit and an overpayment, or a muddle that is hard to correct.
• Assuming the trading allowance protects you from VAT. It does not.
• Assuming MTD for VAT only applies above £90,000. It applies to every VAT-registered business.
• Not keeping a monthly log. Consequence: you cannot show HMRC how you judged your position.

Key terms

• Taxable turnover: the value of your sales that fall within the VAT system, before any costs.
• Rolling 12 months: any 12-month window ending on the last day of a month, not just the tax year.
• Voluntary registration: registering for VAT below the threshold by choice.
• MTD: Making Tax Digital, HMRC's system of keeping digital records and sending updates through software.
• Self Assessment: the process of reporting income and paying tax on your annual tax return.
• Trading allowance: a £1,000 income tax relief on gross trading income.

How UK Driver Accountants helps

We are an accountancy practice for Uber, Bolt, private hire, black cab and delivery drivers, and we are independent of those platforms. Our fixed fees start from £20 a month, so you know the cost before we begin. We can check whether you are near the threshold, handle VAT registration and returns, and keep your Self Assessment aligned.

See our VAT service, our personal tax service and our Making Tax Digital service. You can compare fees on the pricing page.

Conclusion

The threshold for VAT registration is a rolling £90,000 test of taxable turnover, and your personal tax runs on the tax year. Keep the two apart, keep VAT out of your income, and watch each MTD threshold separately. If you are unsure where you stand, contact us and we will review your figures.

Last reviewed 9 October 2026 by the UK Driver Accountants tax team.

This article is general information and is not personal tax advice. Speak to a qualified accountant about your own circumstances. If HMRC raises a dispute or penalty, professional representation is recommended.