Accounting is a game of making what happened agree with what the numbers say. Play a decision, see what money it changes, open the source, then take the understanding into your own books. Free, open and no account required.
Play → notice → understand → keep
Predict first. Open the calculation. Trace the source. Then explain the move back in your own words. No timer, no lives and no shame in trying again.
Training progress
0 of 3 rounds completed
Learning earnings
Understanding earns its keep.
Each completed worked example writes one honest value below. Different meanings and different examples are never added into a fake total.
Round 1 of 3
Mina sells one card through a marketplace. The buyer pays more than the amount that reaches her bank.
The learning ledger
No grand total: meanings stay separate.
Complete one round and its first honest line will appear here.
Saved progress, when this browser allows it, contains only completed round IDs under taxsorted.learn.progress.v1. It is not synced or backed up by a TaxSorted Account; clearing site data removes it.
The map behind the book
See how questions become doors, exact words become bricks, and bounded answers keep their sources, unknowns and next paths attached.
See how TaxSorted builds understandingHeard you must send HMRC updates four times a year? Who’s actually in, what you send, the real deadlines and penalties.
Income TaxHow much of your income is tax-free, how the bands work, the high-income trap, and what self-employed people pay on top.
PropertyRent out a property, or a room? What’s tax-free, what’s not, and what to track.
Self-employmentWork for yourself? What’s tax-free, what National Insurance you owe, and the flat rates that save you keeping every receipt.
Historical tax stories told from laws, records, buildings and contemporary images. The evidence limit and reuse terms stay beside every material.
Not just the rules — who makes them, who runs them day to day, and the real, official channels for having your own say. Same discipline: plain words, every fact cited.
Where do tax rules actually come from? The real pipeline from Budget speech to law — including why you can owe money before the law is passed.
Who’s whoHMRC got your case wrong? Who’s actually in charge, and the step-by-step complaints ladder that exists for exactly this.
Take actionWant a tax rule changed? Every official way to push — your MP, committees, petitions and more — with honest odds for each.
ReceiptsWhen pressure on tax policy actually worked — four real cases, with sources.
More guides are coming — VAT, Corporation Tax, PAYE (tax taken from pay) and Capital Gains Tax, then the taxes Scotland and Wales set themselves (devolved taxes in full), Northern Ireland, and Welsh-language versions. The list is honestly short today because every figure has to be cited before a guide ships.