Built a salary calculator

Every time I negotiated a salary I had to look up what actually lands in the bank. The calculators I found wanted a login, or buried the answer in ads, or never showed how they got there. It annoyed me, so I assumed it annoyed other people.

I built five: take-home pay, severance, annual leave, weekly holiday pay, and the four social insurances. Each one itemises every deduction. It's only useful if you can hold it up against your actual payslip.

There is no database. Every calculation runs in the browser and nothing is sent anywhere. There is no sign-up. That means there is no personal data to leak, no server to fall over, and nothing to administer. The only recurring work is updating the statutory rates once a year.

That wasn't an accident. I read the incident reports first — one service leaked thirteen thousand ID photos because a single access rule was left off. Data you never collect can't leak.