Guides

When Does A Tradesperson Need To Register For VAT?

How the UK VAT registration threshold works for growing trade businesses, how to check rolling turnover, and what changes once you register.

Last updated: September 2026

Quick Answer

You generally need to register for VAT when your VAT taxable turnover goes over the current threshold in the last 12 months, or when you expect to go over it in the next 30 days alone. Turnover is sales that count toward the test, not profit after materials and wages. Check the latest figure and dates on GOV.UK and with your accountant. This guide is general information, not tax advice.

Introduction

If your trade business is growing, VAT registration is something to watch before you cross the line. Waiting until year end to add up sales can mean you miss the date you should have registered.

For how VAT appears on day to day paperwork once you are registered, see VAT on quotes and invoices for tradesmen.

What Is VAT Taxable Turnover?

It is the value of sales that count toward the registration threshold. It is not the profit left after materials, subcontractors and other costs.

Example: you invoice £95,000 of taxable work over 12 months and spend £40,000 on costs. Profit is much lower, but those costs do not simply wipe the turnover figure used for the VAT test.

The Registration Tests

As of this guide’s update, the standard threshold is £90,000. Always confirm the current amount on GOV.UK register for VAT, because thresholds can change.

In broad terms you must generally register if taxable turnover:

  • Goes over the threshold in the last 12 months, or
  • Is expected to go over the threshold in the next 30 days

The first test is a rolling 12 month look back. It is not only your calendar year, accounting year or tax year. A busy summer can push you over long before April.

How To Check A Rolling 12 Month Total

At the end of each month, add taxable turnover for that month and the previous 11 months. When a new month enters, the oldest month drops out.

If you are close to the threshold, also look at work already booked. A large contract may trigger the separate forward looking 30 day rule.

What Happens If You Cross The Threshold?

HMRC sets deadlines for registration and for when registration takes effect. Registering late can mean owing VAT on sales from the date you should have been registered. Get the dates confirmed for your situation rather than guessing from memory.

Can You Register Early?

Yes. Voluntary registration below the threshold can make sense for some businesses, especially those serving VAT registered commercial customers. It also adds admin and changes how you price for consumers. Speak to your accountant before deciding.

What Changes When You Register

  • Quotes and invoices need the right VAT treatment
  • You generally need digital VAT records and Making Tax Digital compatible VAT returns unless an exemption applies
  • Anyone who raises invoices for you needs the new details from the effective date
  • Construction businesses may also need to check domestic reverse charge on particular jobs

How Software Helps

It is easier to review sales when jobs and invoices are recorded consistently. Total Tradesmen keeps jobs, quotes and invoices connected, which gives you and your accountant a clearer starting point when checking turnover.

A dashboard total alone may not equal VAT taxable turnover after adjustments. Your accountant still confirms the figure. Once registered, keep job and invoice detail tidy alongside the compatible accounting software you use for VAT returns.

A Simple Monthly Check

  1. What was my VAT taxable turnover over the last 12 months?
  2. What work am I expecting in the next 30 days?
  3. Do any sales need a VAT treatment check?
  4. Am I close enough to speak to my accountant now?

FAQs

Is turnover the same as money in the bank?

No. Bank balance after paying suppliers can hide how high taxable sales already are.

Do zero rated sales count?

Zero rated sales can still count toward taxable turnover. Exempt or out of scope supplies are treated differently. Check unusual jobs with your accountant.

Is reverse charge the same as registration?

No. Reverse charge is a separate VAT rule that can apply on certain construction invoices between businesses.

Conclusion

Watch taxable turnover as you grow, not just profit. Check a rolling 12 month total regularly, know the forward looking 30 day rule, and get advice before you cross the line. Clean job and invoice records make that conversation much easier.