The VAT Threshold and When It Applies
In the UK, VAT registration becomes mandatory when your taxable turnover exceeds £90,000 in any rolling 12-month period (as of 2024–25). This is not calendar year turnover — it is any 12-month window. If your turnover crosses £90,000 between January and December, between April and March, or any other 12-month combination, you must register within 30 days of the end of the month in which you crossed the threshold.
You can also register voluntarily below the threshold. Many businesses do this to reclaim VAT on purchases — particularly when they have significant input costs, such as a manufacturer buying materials or a retailer purchasing large stock quantities.
What Happens When You Register
Once VAT-registered, you must:
- Charge VAT on all taxable supplies at the applicable rate (20% standard, 5% reduced, 0% zero-rated)
- Issue VAT invoices showing your VAT registration number, the VAT rate applied, and the VAT amount
- Submit VAT returns to HMRC (usually quarterly) via Making Tax Digital-compatible software
- Pay the net VAT (output minus input) to HMRC by the deadline
- Maintain digital VAT records as required under MTD
VAT Rates in the UK
The three main rates:
- Standard rate (20%): Most goods and services — electronics, clothing for adults, restaurant meals, alcohol
- Reduced rate (5%): Children's car seats, energy-saving materials, some renovation work
- Zero rate (0%): Most food and drink (with exceptions), children's clothing and footwear, books, newspapers, passenger transport, new residential construction
The food exemption has important exceptions: restaurant meals are standard-rated even though grocery food is zero-rated. Crisps, chocolate, and ice cream are standard-rated despite being "food." Getting these classifications wrong is one of the most common sources of HMRC VAT inquiries for food businesses.
Making Tax Digital for VAT
Since April 2022, all VAT-registered businesses (above and below the threshold) must use MTD-compatible software to keep digital VAT records and submit returns. Paper-based bookkeeping is no longer sufficient. Your accounting software, POS system, or a bridging tool must handle the digital submission.
OneScale's UK configuration produces VAT-period summaries — total sales, VAT at each rate, total output VAT — in the format required for MTD submission via compatible accounting software. The bridge between your daily sales and your quarterly HMRC submission is automated.
Reclaiming Input VAT
The benefit of registration is reclaiming VAT you pay on business purchases. Every purchase from a VAT-registered supplier carries 20% VAT that you can reclaim on your quarterly return. For a retailer spending £50,000 per quarter on stock from VAT-registered wholesalers, that is £10,000 in reclaimable input VAT — a significant quarterly cash benefit that partly offsets the administration burden of registration.
The VAT Cliff Edge Problem
A well-documented phenomenon: businesses approaching the £90,000 threshold sometimes deliberately suppress growth to avoid VAT registration, fearing the administrative burden and the price increase required to maintain margins. This "VAT gap" distorts business behaviour and misses the growth opportunity.
The realistic solution is to plan for VAT registration before you hit the threshold. If you are at £70,000 turnover and growing 20% per year, you will cross £90,000 within 18 months. Use that time to set up MTD-compatible software, train your staff on VAT invoicing, and decide whether to absorb the VAT, increase prices, or both.
Conclusion
VAT registration changes how your business operates administratively. It does not have to be burdensome if you have the right software generating compliant invoices and MTD-ready reports automatically. The input VAT recovery alone often makes voluntary registration worthwhile before the mandatory threshold is reached.
