How it works
For additive rates on the same taxable base, total sales tax = purchase × (state + county + city + district rates).
Input definitions
- Taxable purchase amount (USD)
- Enter the value in the labeled unit.
- Confirmed state rate (%)
- Enter the value in the labeled unit.
- Confirmed county rate (%)
- Enter the value in the labeled unit.
- Confirmed city rate (%)
- Enter the value in the labeled unit.
- Confirmed special district rate (%)
- Enter the value in the labeled unit.
A worked example
- Taxable purchase amount (USD)
- 100
- Confirmed state rate (%)
- 6
- Confirmed county rate (%)
- 1
- Confirmed city rate (%)
- 1
- Confirmed special district rate (%)
- 0
Assumptions & limits
Sources checked 18 October 2026. USD; supplied additive state/local rates on one fully taxable base. Defaults illustrate arithmetic, not a specific jurisdiction. Excludes exemptions, sourcing, caps, tax-on-tax, tax holidays and nexus.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-18. Content checked against the stated method and examples. Our verification approach.
Common questions
Are rates looked up automatically from a US ZIP code?
No. Enter current rates for the applicable tax jurisdiction and item. ZIP codes alone do not reliably establish sales-tax boundaries.
How does US state and local sales tax stack work?
For additive rates on the same taxable base, total sales tax = purchase × (state + county + city + district rates).
What should I check before using US state and local sales tax stack?
Sources checked 18 October 2026. USD; supplied additive state/local rates on one fully taxable base. Defaults illustrate arithmetic, not a specific jurisdiction. Excludes exemptions, sourcing, caps, tax-on-tax, tax holidays and nexus.