Understanding when you need to register for VAT is one of the most important financial decisions for any growing UK business. Get it wrong and you face HMRC penalties. This guide explains the current threshold, when registration is compulsory, and when voluntary registration could actually save you money.
Current VAT Registration Threshold
The UK VAT registration threshold is currently £90,000. This is your taxable turnover — the total value of non-VAT-exempt goods and services you sell — over any rolling 12-month period.
"You must register for VAT if your taxable turnover exceeds £90,000 in any 12-month period, or if you expect it to exceed £90,000 in the next 30 days alone."
HMRC VAT Notice 700/1, effective from 1 April 2024
This threshold was raised from £85,000 to £90,000 on 1 April 2024 — the first increase since 2017. The deregistration threshold was also raised to £88,000.
When Must You Register?
VAT registration becomes compulsory in two scenarios:
- The backward look: At the end of any month, if your taxable turnover for the previous 12 months exceeds £90,000, you must register within 30 days. Effective date: first day of the second month after crossing.
- The forward look: If you expect turnover to exceed £90,000 in the next 30 days alone (e.g. a large contract), you must register immediately.
Failure to register on time results in a penalty calculated as a percentage of the VAT owed from when you should have registered. The longer the delay, the higher the penalty.
Voluntary Registration — When It Makes Sense
You can register at any time, even well below £90,000. Voluntary registration can be beneficial when:
- Your clients are VAT-registered (B2B): They reclaim the VAT you charge, so it doesn't cost them more — and you can reclaim VAT on your own purchases.
- You have significant expenses: Equipment, software, materials — reclaiming 20% VAT on purchases can mean thousands in savings.
- Credibility: Being VAT-registered signals scale to larger clients and suppliers.
- Approaching the threshold: Register early to adjust pricing and systems before it's compulsory.
If your clients are mainly consumers (B2C), voluntary registration effectively raises your prices by 20% since consumers cannot reclaim VAT. Consider this carefully.
VAT Schemes Explained
| Scheme | How It Works | Best For |
|---|---|---|
| Standard | Charge VAT on sales, reclaim on purchases, pay the difference quarterly | Businesses with significant purchase VAT |
| Flat Rate | Pay a fixed % of gross turnover to HMRC; cannot reclaim most purchase VAT | Low-expense businesses (consultants, developers) |
| Cash Accounting | Pay VAT only when customers actually pay you, not when you invoice | Businesses with long payment terms or cash-flow concerns |
The Flat Rate Scheme gives you a 1% discount in your first year of VAT registration. Speak to your accountant to check if it suits your business.
What Changes on Your Invoices
Once VAT-registered, your invoices must include:
- Your VAT registration number
- The VAT rate applied to each item
- The VAT amount per line and total
- Totals excluding and including VAT
- If using Flat Rate Scheme, still show VAT at the standard rate on invoices
UK VAT Rates
| Rate | % | Applies To |
|---|---|---|
| Standard | 20% | Most goods and services |
| Reduced | 5% | Home energy, children's car seats, some renovations |
| Zero | 0% | Most food, children's clothing, books, newspapers |
Some goods/services are exempt entirely (insurance, financial services, education). Exempt items don't count as taxable turnover for threshold purposes.
How to Track Your VAT Threshold
- Monthly: Add up your taxable turnover for the rolling 12 months (not your financial year).
- Set an alert at £80,000 — gives you buffer to prepare before hitting £90,000.
- Use invoicing software that tracks this automatically. Manual spreadsheets are error-prone.
- Include all taxable income — not just invoiced amounts. Cash sales and bartered goods count.
You cannot delay issuing an invoice to stay below £90,000. HMRC considers the date you supplied the goods or services, not the invoice date.
Track Your VAT Automatically
PrimeInvo monitors your rolling 12-month turnover in real time and alerts you as you approach the VAT threshold. MTD-compliant VAT returns included on all paid plans.
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