https://simpletaxcalculator.app/
Simple Tax Calculator — Free US Tax Tools 2026
Free US tax calculators for sales tax, property tax, inheritance tax, gas tax, and self-employment tax. State-specific rates updated for 2026. No signup...
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https://gstcalculator.app/
Free Simple GST Calculator - Quick Add or Remove Tax | GST Calculator
Use this simple GST calculator for quick one-off tax checks: add GST to a base price or remove GST from a total. Supports NZ 15%, AU 10%, SG 9%, India 18% and...
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