Official data · all 50 states
Sales tax that's always right.
One API for rooftop-accurate US sales tax — state, county, city and special districts, itemized in every response. No third-party tax vendor.
Rooftop accuracy · Self-serve keys · 99.9% uptime
50 5th Ave, New York, NY 10118
Response
Total = 8.875%
New York state4.000%
New York City4.500%
MCTD surcharge0.375%
GET /tax?address=…
Rooftop accuracy
Address-level rates where data allows, official tables everywhere else.
Clear breakdown
Every layer itemized with a ready-to-display summary string.
Keys you control
Per-key limits, domain & IP locking, and one-click rotation.
Fast & cached
Quarter-aligned cache keeps responses quick and always fresh.
Simple, scalable pricing
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Free
Get started — great for testing
Free
- 1,000 requests / day
- 10,000 requests / month
- 60 req/min rate limit
- 3 key regenerations
- Lock to 1 domain / IPs
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Pay as you go
Only pay for what you use
$0.001/request
- 120 req/min rate limit
- Unlimited key regenerations
- Lock to 3 domains / IPs
Pro
For production apps
$49/mo
- 50,000 requests / day
- 1,000,000 requests / month
- 300 req/min rate limit
- Unlimited key regenerations
- Lock to 5 domains / IPs
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