I saw this on reddit today: https://taxmap.ch/
Checked it and looks nice/clean. One thing I noticed, their calculation do not account for the usual tax deductions. E.g. when you enter the gross income they’ll just deduct AHV, pension paymemts etc and then give you the amount of taxes to be paid based on the money that reaches your account.
E.g. if you have 100k gross income, they tell you to pay taxes on 90k, while in reality you’ll get closer to 80k taxable income with the usual deductions.
For ZH city that result is then ~12.5k predicted taxes instead of ~9.5k in reality.
So just make sure to add not the net income, but the actual net taxable income into the calculation and it should get more accurate.
Interesting project. You can also use the ESTV Steuerrechner (Cookie Not accepted) which has more features.
Also, don’t put Imprint and Privacy Policy links in there if they 404 anyways.