Your tax, without the dread.
UK tax is genuinely complicated, and most calculators only make it feel worse — a wall of numbers with no explanation. Serenity Tax shows you what you'll actually owe, why, and what's coming next, in plain English, so you can plan with a clear head.
No sign-up required to try it. Nothing you enter is saved or sent anywhere unless you ask us to email it to you.
See what's actually coming
A one-off bonus or a big dividend doesn't just change this year's bill — it can pull your payments on account forward by 18 months. We map the whole cash-flow timeline, not just today's number.
Built for real income
Self-employed, a company director balancing salary and dividends, or simply employed — each works differently under the hood, and the calculator models the one that matches you properly, instead of a flattened average.
Honest about its limits
We'd rather tell you plainly what this doesn't cover — Capital Gains Tax, Marriage Allowance, Personal Allowance tapering — than have you rely on a number that quietly leaves something out.