VAT guide · UK · Updated May 2026
VAT registration threshold UK: when do you need to register?
Written by Iftikhar Rashid FCCA — 16 years in practice. Source: gov.uk/vat-registration-thresholds
What is the VAT threshold?
The UK VAT registration threshold is £90,000 of taxable turnover in any rolling 12-month period. If your taxable sales exceed this amount in any 12 consecutive months, you must register within 30 days and charge VAT from the effective date. Missing the deadline triggers backdated VAT liability — HMRC can charge VAT on sales you didn't collect. [VERIFY: current threshold at gov.uk/vat-registration-thresholds]
Who this applies to: UK sole traders, limited companies, and partnerships approaching or above the turnover threshold.
Why it matters: Late registration means backdated VAT on all sales from when you should have registered — even if you didn't collect it from customers.
UK VAT thresholds (2026/27)
[VERIFY all figures at gov.uk/vat-registration-thresholds]
| Threshold | Amount [VERIFY] | What it means |
|---|---|---|
| Registration threshold (mandatory) | £90,000 [VERIFY] | Must register if taxable turnover exceeds this in any 12 months |
| Deregistration threshold | [VERIFY at gov.uk] | Can deregister if turnover falls below this |
| Flat Rate Scheme entry limit | £150,000 taxable turnover [VERIFY] | Must leave Flat Rate Scheme if turnover exceeds £230,000 [VERIFY] |
| Cash Accounting Scheme limit | £1.35m taxable turnover [VERIFY] | Pay VAT when received, reclaim when paid |
| Annual Accounting Scheme limit | [VERIFY at gov.uk] | One VAT return per year with advance payments |
When you must register — the timeline
Monitor rolling 12-month turnover
Check your VAT-taxable sales at the end of every month. It is the rolling 12-month total that matters — not the calendar or tax year.
Threshold crossed in a month
If your rolling 12-month taxable turnover first exceeds £90,000 [VERIFY] at the end of any month, you must notify HMRC within 30 days of that month-end.
Register within 30 days
Register via HMRC's online service. The effective date of registration is the first day of the month following the one in which you crossed the threshold.
Charge VAT from the effective date
From the effective registration date, you must add VAT to all standard-rated supplies. Issue VAT invoices and keep VAT records.
File quarterly VAT returns
First VAT return covers from the effective date. Most businesses file quarterly. Payments are due 1 month and 7 days after each quarter. [VERIFY deadlines at gov.uk]
VAT registration threshold — FAQs
What is the VAT registration threshold in the UK?
The UK VAT registration threshold is £90,000 of taxable turnover in any rolling 12-month period. If your VAT-taxable turnover exceeds this in any 12 consecutive months, you must register for VAT within 30 days and charge VAT from the effective date of registration. [VERIFY: current threshold at gov.uk/vat-registration-thresholds]
Is VAT based on turnover or profit?
VAT registration is based on taxable turnover — total sales of VAT-taxable goods and services — not profit. Your costs and expenses do not reduce the threshold calculation. Exempt supplies (such as most residential property lettings) do not count towards the threshold.
When exactly do I need to register for VAT?
You must register within 30 days of the end of the month in which your taxable turnover exceeded the threshold in any rolling 12-month period. You must also register if you expect your taxable turnover to exceed the threshold in the next 30 days alone — even if it hasn't yet. Late registration carries backdated VAT liability and penalties. [VERIFY: current rules at gov.uk/register-for-vat]
What happens if I miss the VAT registration deadline?
HMRC can charge VAT on all sales made from the date you should have been registered — even if you didn't charge it to customers. You may also face a late registration penalty. For businesses that have been trading above the threshold for some time, the backdated VAT liability can be significant. [VERIFY: current penalty rules at gov.uk]
What VAT schemes are available for small businesses?
Key schemes: (1) Standard rate accounting — VAT on each sale and purchase; (2) Flat Rate Scheme — pay a fixed percentage of gross turnover, keep the difference (available below £150,000 taxable turnover) [VERIFY]; (3) Cash Accounting Scheme — pay VAT when you receive payment, reclaim when you pay (available below £1.35m turnover) [VERIFY]; (4) Annual Accounting Scheme — one VAT return per year with advance payments [VERIFY]. The right scheme depends on your business model, margins, and cash flow.
Do rental income and property letting count towards the VAT threshold?
Most residential property letting income is exempt from VAT — it does not count towards the registration threshold. Commercial property can be VAT-able depending on whether the landlord has 'opted to tax'. If you have a mixed business with rental income and trading turnover, only the taxable (non-exempt) supplies count towards the threshold.
Can I voluntarily register for VAT before I reach the threshold?
Yes. Voluntary VAT registration is available at any time. It can be beneficial if your customers are VAT-registered businesses (they can reclaim the VAT you charge), or if you have significant input VAT to reclaim on purchases. It is not appropriate if most of your customers are consumers who cannot reclaim VAT.
What is the VAT deregistration threshold?
You can deregister for VAT if your taxable turnover falls below the deregistration threshold. This is usually set below the registration threshold. [VERIFY: current deregistration threshold at gov.uk/vat-registration-thresholds]
Related guides
- VAT returns and filing
- Accountants for growing businesses
- Company formation
- Sole trader vs limited company
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