A solution must include
- Publicly accessible at a URL, free to use
- Users enter a salary and see their estimated income tax and National Insurance
- Breaks that amount down across public spending areas
- Uses official UK public spending data, with every source linked
- Shows which tax year the figures are for
- Works on a phone as well as a computer
How itβs verified: Live URL; A list of data sources and a worked example for a Β£35,000 salary.
The first valid solution wins.
The first solution that meets every criterion wins. No end date: open until solved.
Money is held in 75-day rounds. If a round ends without a winner, everyone who added money gets their bounty money back on their card. A bounty under $50 is refunded instead of paid out.
Solved it? Built it? Found it?

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