Mathematics and everyday calculations · Everyday money
Sales tax estimate
Estimate tax and total using a rate you provide.
Method and scope
Tax = subtotal × rate ÷ 100. Total = subtotal + tax.
Calculate an arithmetic tax estimate from a subtotal and user-entered rate. Intended for Everyday use, Learners.
Inputs- Subtotal — 1
- Tax rate — 1
SOURCE AND LIMITS
Assumptions: The subtotal is non-negative. The user supplies a rate from 0% through 100%. The tax estimate applies the same rate to the entire subtotal. Amounts use one unchanged currency and scale.
Limitations: Use only a rate you have independently determined applies to the purchase; this is a simple arithmetic estimate.
Method version 1.0.0 · Unit registry and result provenance are shown after calculation. This tool is limited to the documented scope.Explore related fields
See the other currently released formula calculators tagged for these research fields.