Free tax health check
Are you overpaying HMRC without knowing it?
Check if you're overpaying tax — or storing up stress with HMRC — in two minutes. Real figures, plain English, no pitch.
Free · No sign-up to see your result · 2 minutes
Built by Carr Accounting Studio — a London-based ICAEW accountancy firm
What you'll get
In two minutes, you'll know three things.
Where you might be overpaying (or underpaying)
How you pay yourself, and the reliefs and allowances most founders miss. Usually where the money is.
What could trip you up
VAT, director's loans, and the deadlines HMRC actually fines you for. The stuff that gets expensive if you miss it.
What's coming
Changes worth planning for before they land, like Making Tax Digital — now live for income over £50k.
“Most founders have at least one thing worth fixing — and they're often overpaying (or underpaying!) a few hundred to a few thousand in tax a year.”
David Carr
Chartered Accountant (ACA, ICAEW)
Your data
Your answers aren't stored. Enter as little or as much as you like — the more you share, the more accurate your result, but that's entirely your call.
The only thing that ever leaves your browser is the result you choose to email yourself.
Who's behind it
Built by Chartered Accountants — for founders.
FounderTax is made by Carr Accounting Studio, a London firm of Chartered Accountants (ICAEW). It uses the same checks we run with founder clients every day.
Every figure in your result is one we actually work from and sign off — not a rule of thumb from a blog. If something needs attention, you can book an obligation-free call with the firm that built it.
Visit Carr Accounting StudioDavid Carr
Chartered Accountant (ACA, ICAEW), founder of Carr Accounting Studio
“You build the business. We handle the finances.”
Two minutes, no pitch
Two minutes to find out what you might be missing?
Your result's on screen straight away. Email it to yourself if you'd like a copy, and book a call only if something needs a closer look — no pitch.