When do I have to register for VAT?

When your VAT-taxable turnover exceeds £90,000 in any rolling 12-month period, or when you expect to exceed it within the next 30 days. The rolling nature of the threshold is what catches people out.

Should I register for VAT voluntarily?

It can make sense if your customers are mainly VAT-registered businesses (who reclaim the VAT anyway), letting you reclaim VAT on your own purchases. If you sell mostly to the public, it usually just makes you more expensive.

What is the VAT Flat Rate Scheme?

A simplified scheme for businesses with turnover up to £150,000 (ex VAT), where you pay HMRC a fixed percentage of your gross turnover instead of tracking VAT on every purchase. It suits low-cost businesses but not those that buy a lot — worth checking both ways.

What happens if I register for VAT late?

HMRC can charge you for the VAT you should have collected from the date you crossed the threshold — often money you never took from customers. Watching your rolling 12-month turnover avoids this.

When should you register for VAT? (and the Flat Rate Scheme)

VAT registration is one of those milestones that feels daunting but often isn't as bad as feared — and sometimes it's actually worth doing before you're forced to. Here's when you have to register, when you might choose to, and the scheme that can simplify it for smaller businesses.

When you must register

You're required to register for VAT once your VAT-taxable turnover exceeds £90,000 in any rolling 12-month period — not just your accounting year, but any 12 months. You also have to register if you expect to go over that threshold within the next 30 days alone. Once registered, you charge VAT on what you sell, reclaim VAT on what you buy, and file VAT returns (digitally, under Making Tax Digital) usually every quarter.

The trap of not watching your turnover

Because the threshold is based on a rolling 12 months, it's easy to cross it without noticing if you're only looking at your year-end figures. Register late and HMRC can charge you for the VAT you should have collected — money you may not have taken from customers. Keeping an eye on your rolling turnover is one of those small habits that avoids a nasty bill.

Registering voluntarily

You can register below the threshold, and for some businesses it makes sense. If your customers are mainly VAT-registered businesses, they can reclaim the VAT you charge, so it costs them nothing — and you get to reclaim the VAT on your own purchases. If you sell mostly to the public (who can't reclaim it), voluntary registration usually just makes you more expensive, so it's less appealing. It comes down to who your customers are.

The VAT Flat Rate Scheme

The Flat Rate Scheme is designed to simplify VAT for smaller businesses (turnover up to £150,000 excluding VAT). Instead of tracking the VAT on every purchase, you pay HMRC a fixed percentage of your gross turnover, with the percentage set by your type of business. It's less admin, and for businesses with few costs it can even leave you slightly better off — but for businesses that buy a lot, tracking VAT normally and reclaiming it often works out better. It's genuinely worth running the numbers both ways before choosing.

Get the timing and scheme right

VAT is one of those areas where getting the timing and the scheme choice right saves real money, and getting it wrong costs it. We help businesses register at the right moment, choose the scheme that actually suits them, and set up the digital record-keeping so returns are painless. Try our VAT calculator for the day-to-day maths, and talk to us when registration is on the horizon.