How to Register for VAT in the UK: A Step-by-Step Guide for Small Businesses

Value Added Tax (VAT) registration is mandatory once your taxable turnover exceeds £90,000 in any rolling 12-month period — the threshold that has applied since April 2024. Missing the registration deadline can result in backdated VAT bills and penalties, so knowing when and how to register is essential for any growing business. This guide walks you through the whole process.

Do You Need to Register?

You must register for VAT if:

• Your taxable turnover in any rolling 12-month period exceeds £90,000
• You expect your turnover to cross £90,000 in the next 30 days alone

You can voluntarily register below the threshold, which allows you to reclaim VAT on business purchases. This is worth considering if your customers are mostly VAT-registered businesses who can reclaim the VAT you charge, or if you make significant VAT-able purchases.

You are exempt from registering if you only sell VAT-exempt goods and services — things like financial services, education, healthcare, and residential property.

For comparison, the EU VAT registration thresholds vary by country (Germany has no threshold for non-resident sellers). In Australia, GST registration is required at AUD $75,000. The US has no federal equivalent, though individual states have sales tax registration.

Step 1: Check the 12-Month Rolling Threshold

VAT is triggered by the rolling 12-month total — not the calendar year. At the end of every month, add up your taxable turnover for the previous 12 months. The moment this total exceeds £90,000, you must register within 30 days and start charging VAT from the next day.

Keep a monthly spreadsheet of your turnover so you can track this easily. If you miss the registration point, HMRC will charge you the VAT you should have collected — even if you didn't charge it to customers.

Step 2: Gather the Information You Need

Before registering, have the following ready:

• Your business's legal name and address
• Business structure (sole trader, partnership, limited company)
• Company Registration Number (if limited company)
• National Insurance number (if sole trader)
• Bank account details
• Details of business activities (what you sell)
• Date your taxable turnover exceeded (or will exceed) the threshold
• Details of any earlier VAT registrations

Step 3: Register Online via HMRC

The fastest way to register is online at gov.uk/register-for-vat. You'll create or log in to a Government Gateway account, complete the VAT1 application form, and receive your VAT registration number (a 9-digit number in the format GB 000 0000 00) usually within 10 working days.

If your business has more complex circumstances — for example, if you're registering a partnership, registering for VAT groups, or need to apply for a specific scheme — you may need to submit a paper form (VAT1) or contact HMRC.

Step 4: Choose a VAT Accounting Scheme

There are several schemes that can simplify how you account for VAT:

Standard VAT Accounting: You pay HMRC the difference between the VAT you've charged customers and the VAT you've paid on purchases. You submit a VAT return quarterly.

Flat Rate Scheme (FRS): For businesses with taxable turnover under £150,000. You pay HMRC a fixed percentage of your gross turnover (the rate depends on your sector) rather than calculating VAT on every transaction. Simpler and sometimes cheaper.

Cash Accounting Scheme: You account for VAT based on when you receive (or make) payments, not when invoices are issued. Useful for businesses with slow-paying customers.

Annual Accounting Scheme: Submit just one VAT return per year instead of four, and make advance payments throughout the year. Available for businesses with turnover under £1.35 million.

Step 5: Comply with Making Tax Digital for VAT

Since April 2022, all VAT-registered businesses must comply with Making Tax Digital (MTD) — keeping digital VAT records and submitting returns through MTD-compatible software. There is no exemption based on turnover. Software options include Xero, QuickBooks, FreeAgent, and Sage.

Checklist

• Track rolling 12-month taxable turnover monthly
• Register within 30 days of exceeding £90,000
• Create a Government Gateway account if you don't have one
• Decide which VAT scheme suits your business (Standard, FRS, Cash, Annual)
• Start charging VAT on taxable sales from the registration date
• Keep digital VAT records using MTD-compatible software
• Submit quarterly VAT returns on time (or annually under the Annual Accounting Scheme)
• Display your VAT number on invoices

Key Numbers

• VAT registration threshold: £90,000 (rolling 12 months)
• Standard VAT rate: 20%
• Reduced rate: 5%
• Zero rate: 0%
• Flat Rate Scheme turnover limit: £150,000

Sources

• GOV.UK – VAT Registration
• GOV.UK – VAT Rates on Different Goods
• GOV.UK – Flat Rate Scheme
• Audit Consulting Group – MTD and VAT Thresholds 2026

Educational content only — not financial advice.