VAT can sound like something you only need to think about when your business gets “big”.
But if your income is growing, it’s worth understanding the rules before VAT registration becomes something you need to deal with quickly.
Here’s the simple version.
When do I need to register for VAT?
You normally need to register for VAT when your VAT taxable turnover goes over £90,000 in a rolling 12-month period.
You also need to register if you expect your taxable turnover to go over £90,000 in the next 30 days alone.
And yes, this applies to sole traders too.
It’s turnover, not profit
This is an important one.
The £90,000 threshold relates to your taxable turnover, not the profit you have left after expenses.
So if you invoice £95,000 but have £35,000 of business expenses, you could still need to register for VAT.
Your taxable turnover generally includes goods and services that are standard-rated, reduced-rated or zero-rated. VAT-exempt and out-of-scope sales are treated differently.
Don’t wait until the end of the tax year
The VAT threshold doesn’t reset every April.
HMRC looks at your taxable turnover over a rolling 12-month period, so it’s something you need to keep an eye on throughout the year.
If business suddenly takes off or you land a large contract, the separate 30-day rule can also bring VAT registration forward.
What happens when I become VAT registered?
Once registered, you’ll generally need to charge the correct amount of VAT on your taxable sales, keep VAT records and submit VAT Returns to HMRC.
For most goods and services, the standard VAT rate is currently 20%.
You can also usually reclaim VAT you’ve paid on eligible business purchases.
The difference between the VAT you’ve collected and the VAT you can reclaim will normally determine what you pay to HMRC – or what HMRC repays to you.
Can I register before I reach £90,000?
Yes.
You can choose to register voluntarily while your taxable turnover is below the threshold.
That can make sense for some businesses, particularly if you have significant VATable expenses or mainly work with VAT-registered businesses.
But voluntary registration isn’t automatically the right move.
If most of your customers are members of the public or small businesses that cannot reclaim VAT, adding VAT could affect your pricing or reduce the amount you keep from each sale.
It’s worth looking at the numbers first.
What if I’m getting close to the threshold?
This is where staying on top of your bookkeeping matters.
If your turnover is heading towards £90,000, you want to know before you cross it.
That gives you time to understand what VAT could mean for your prices, customers and cash flow.
Registering late can mean paying VAT on sales made from the date you should have been registered, and you may also face a penalty.
Keep VAT simple
Growing towards the VAT threshold is usually a good sign — your business is moving forward.
The important part is being ready for it.
At Brease, we help sole traders keep their numbers organised and understand what’s coming next.
Getting close to the VAT threshold? Talk to us before you get there.
Looking for more simple business advice?
This guide is part of the Brease Guides collection, created to help sole traders understand bookkeeping, tax and Making Tax Digital without the jargon.

