Reaching the VAT threshold is a significant milestone — but it also means new responsibilities. Here’s a step-by-step guide to VAT registration, what it means for your business and how to stay compliant.
When Must You Register for VAT?
You must register for VAT when your taxable turnover exceeds £90,000 in any rolling 12-month period. You must register within 30 days of the end of the month in which you exceeded the threshold. HMRC can backdate VAT to the date you should have registered, so monitoring your turnover is important.
💡 Key takeaway
You must register for VAT within 30 days of your taxable turnover exceeding £90,000 — late registration brings backdated penalties.
Voluntary VAT Registration
You can register voluntarily even if your turnover is below £90,000. This can be beneficial if: your customers are mainly VAT-registered businesses (they can reclaim the VAT you charge), you have significant VAT on purchases you want to reclaim, or you want to appear more established.
📊 Standard VAT
- Claim back all input VAT
- Full record-keeping required
- Quarterly returns to HMRC
- Suits businesses with high costs
- Most common for established businesses
📉 Flat Rate Scheme
- Pay a fixed % of gross turnover
- Less admin overhead
- Can’t reclaim input VAT (mostly)
- Good for low-cost businesses
- Suits freelancers and service firms
How to Register
Register online through HMRC’s VAT registration service at gov.uk. You’ll need your business details, turnover information and bank details. The process typically takes 40 working days, after which you’ll receive your VAT registration number and effective date.
Your First VAT Return
After registration, you’ll be assigned a VAT accounting period (usually quarterly). Your first return may cover an odd number of months. From registration date, you must charge VAT on all taxable sales and can reclaim VAT on business purchases.
VAT Schemes to Consider
Standard VAT accounting suits most businesses. The Flat Rate Scheme can benefit service businesses with low purchases. The Cash Accounting Scheme suits businesses with cashflow concerns — you account for VAT when paid, not when invoiced. Your bookkeeper will advise on the best scheme for your situation.
Frequently Asked Questions
How long does VAT registration take?
Currently around 40 working days, though HMRC aims to process within 30. In busy periods it can take longer. You can apply for exception if you urgently need your VAT number.
Can I charge VAT before I receive my registration number?
You should not show a VAT number on invoices until you have one. However, once registered, you can issue revised invoices to recover VAT on sales made since your effective date.
What is my VAT quarter?
HMRC assigns one of three stagger groups (month 1, 2 or 3). Your quarters end in different months depending on your stagger group. Your first return period begins on your effective registration date.
