VAT threshold checker
The £90,000 test runs over any rolling 12 months — not your accounting year. Check your headroom and how fast you're using it up.
Why "rolling" matters
At the end of every month you look back 12 months: if taxable turnover in that window passed £90,000, you must register within 30 days. Businesses watching their accounting year instead of the rolling window register late — and late registration means paying VAT you never charged customers, straight out of your margin, plus penalties.
Approaching the line?
Registration isn't always bad news: reclaiming input VAT helps many businesses, and sometimes voluntary registration below the threshold makes sense. What matters is crossing on purpose, with the right scheme chosen — flat rate, cash accounting or standard. We handle registration for a £79 fixed fee and monitor the rolling window automatically for bookkeeping clients.