Support
Contact
Placeholder contact details. Give me a real address or inbox and I will put it here — I have not invented one.
Corrections
If a withholding line looks wrong, the most useful report includes your inputs, the figure shown, the figure you expected, and the publication you are comparing against. Corrections take priority over new features.
Supplying tax data
Verified schedules can be dropped straight into the rule modules. The Data sources page lists precisely which figures are outstanding for 2026.
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A support inbox, response-time expectation and postal address still need to be provided.
Calculations are estimates for informational purposes and are not tax, legal, or financial advice. Actual withholding and take-home pay may differ.