Journey

Approaching the VAT threshold

What to do when your turnover is approaching £90,000 and you might need to register for VAT. Helps you monitor your position, understand when registration becomes mandatory, and choose the right VAT scheme for your business.

Running a Business Updated 15 September 2026
5 milestones references 3 guides

Is your business approaching the VAT threshold?

When your taxable turnover approaches £90,000, you need to start monitoring closely. VAT registration is mandatory once you exceed this threshold in any rolling 12-month period.

Key facts:

  • The threshold is £90,000 (from 1 April 2024)
  • It's calculated on a rolling 12-month basis, not the tax year
  • Late registration triggers penalties and backdated VAT liability
  • You can register voluntarily before reaching the threshold
  1. Check if you're approaching the threshold

    Start by understanding exactly where you stand. VAT registration uses two tests: the historic test (looking back 12 months) and the future test (expecting to exceed £90k in the next 30 days).

    Check if you need to register for VAT

    Understand the two VAT registration tests and calculate your rolling 12-month taxable turnover.

  2. Decide: wait for mandatory registration or register voluntarily?

    You have two choices when approaching the threshold:

    • Wait: Continue trading until you exceed £90,000, then register within 30 days
    • Register voluntarily: Register now, even though you're below the threshold

    There's no "right" answer - it depends on your business type and customer base.

  3. Register for VAT

    Once you've decided to register (or must register), the process takes about 30 working days. You can register online through HMRC.

    VAT registration

    How to register for VAT, what information you need, and what happens after registration.

  4. Choose the right VAT scheme

    Don't just use standard VAT accounting by default. HMRC offers three schemes designed for smaller businesses that can simplify administration and improve cash flow.

    VAT schemes for small businesses

    Compare Flat Rate Scheme, Cash Accounting, and Annual Accounting to find what suits your business.

  5. Get your systems ready

    Before your effective registration date, you need to:

    Summary: Your VAT threshold checklist