UK VAT Registration in 2026: Should You Register, and When?

The compulsory registration threshold

You must register for VAT if your taxable turnover exceeds £90,000 in any rolling 12-month period — not a calendar year, not your accounting year. You also must register immediately if you expect to exceed the threshold in the next 30 days alone. Missing either trigger results in HMRC penalties and back-dated VAT liability that often can't be passed on to customers.

Track turnover monthly. A common nasty surprise is realising you crossed the threshold in month 9, having to register retrospectively, and now owing VAT on sales already invoiced and spent. A simple spreadsheet rolling-sum solves this in five minutes a month.

Voluntary registration: the trade-off

If you sell mostly to other VAT-registered businesses, voluntary registration is usually a win. They reclaim the VAT you charge, so it costs them nothing, and you reclaim VAT on your costs. You also look more established and can backdate registration up to 4 years to recover pre-trading VAT in some cases.

If you sell to consumers or non-VAT-registered businesses, voluntary registration effectively raises your prices by 20 percent or eats your margin. Most B2C businesses sensibly stay below the threshold for as long as possible, sometimes even pausing growth or restructuring to stay under.

Standard scheme vs Flat Rate Scheme

Under the Standard scheme you charge 20 percent VAT (or 5 percent / 0 percent on certain goods) and reclaim VAT on purchases. Quarterly returns submit the difference to HMRC. This suits businesses with significant VATable expenses.

The Flat Rate Scheme charges customers full 20 percent VAT but pays HMRC a fixed lower percentage of total VAT-inclusive turnover, varying by industry (typically 12 to 16.5 percent). It simplifies bookkeeping and can produce a small surplus. The 16.5 percent 'limited cost trader' rate effectively eliminates that surplus for many service-based businesses, so always run both calculations before electing.

Making Tax Digital

All VAT-registered businesses must use Making Tax Digital (MTD) compatible software for VAT records and submission. Spreadsheets are still allowed only as part of digital links into compliant bridging software — manual rekeying into the HMRC portal is no longer compliant.

Cloud accounting packages such as Xero, FreeAgent, QuickBooks and Sage all handle MTD comfortably. If you use a bookkeeper, confirm they're set up for the digital agent flow before the first quarter ends.

International sales and digital services

Selling goods or digital services to consumers in the EU triggers separate rules — Import One-Stop Shop (IOSS) for low-value goods and the OSS for digital services. Selling B2B to overseas businesses generally uses the reverse charge mechanism, where the customer accounts for VAT in their own country.

These areas trip up many small UK ecommerce sellers. If you ship internationally or sell digital products globally, take specific advice early. Mistakes are expensive and customer experience suffers when surprise import VAT lands on the doormat.

Frequently asked questions