Sales tax is one request. Not your next backend project.

Add sales tax to any checkout without building or maintaining the engine behind it.

Skip the tax logic · Start with 150 free API calls · No credit card

Connected sales tax API services, geographic coverage, code, and calculated tax results

API capabilities

One sales tax API from first request to final adjustment.

Calculate across supported markets, stop cleanly when the facts cannot support an answer, and keep every request visible as volume grows.

Explore the API reference

70
Countries represented: 51
U.S. jurisdictions: 13
Canadian provinces and territories

Current coverage data as of 24 August 2026. Availability depends on the transaction. When the API cannot calculate, it returns a clear outcome instead of guessing.

Return tax, subtotal, total, and an explicit outcome directly to checkout, invoicing, or billing. Process one sale or a batch of up to 100.

Example sales tax calculation

See the tax result your application receives.

For this Ontario SaaS example, a CAD 100.00 tax-exclusive line returns CAD 13.00 HST and a CAD 113.00 total.

Tax amount, subtotal, and total
Outcome, customer-readable explanation, and request ID
Stored response for later inspection

Read sales tax calculation docs

Sales tax calculation result

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View logscalculated

Outcome

Subtotal: CAD 100.00
Taxable: CAD 100.00
Tax: CAD 13.00
Total: CAD 113.00

Request

Customer: Ontario, Canada
Item: SaaS subscription
Transaction date: 2026-08-29
Currency: CAD

Example only. Each API result depends on the seller, customer, location, item classification, registration, and date facts sent with that transaction.

Pricing