Evaluation
150 public API calls for 30 days
No card, no extra usage charges, and no recurring free allowance. Verify your email to activate the one-time evaluation.
Sales tax API pricing
Pay for API calls, not seats or surprises.
Start at $5/month. Every self-serve plan publishes its included calls, per-call overage, monthly usage limit, and highest possible bill.
150 authenticated public API calls for 30 days. No card and no extra usage charges.
Start evaluation
Developer
$5/month
Build and ship your first sales tax integration.
- Public API calls included
- 1,000
- Monthly usage limit
- 8,000
- Active API keys
- 1
- Core sales tax calculation endpoints
- Clear result explanations
Launch
Best for small teams$29/month
Run a production integration with batches and adjustments.
- Public API calls included
- 15,000
- Monthly usage limit
- 50,000
- Active API keys
- 5
- Batch sales tax calculations
- Adjustments for corrections and reversals
Scale
$99/month
Handle growing sales tax volume with priority support.
- Public API calls included
- 75,000
- Monthly usage limit
- 500,000
- Active API keys
- 25
- High-volume batch processing
- Evidence validation and priority support
Enterprise
From $749/month
Fit custom volume, security, and procurement needs.
- Public API calls included
- Custom
- Monthly usage limit
- Custom
- Active API keys
- 100
- Custom limits and rollout support
- Security and procurement support
Compare paid plans
Every paid plan uses the same sales tax calculation API. Plans differ by included public API calls, monthly usage limits, active API keys, batch support, and support level.
| Plan details | Developer | Launch | Scale | Enterprise |
|---|---|---|---|---|
Core sales tax calculationsAbout Core sales tax calculations | Included | Included | Included | Included |
Batch sales tax calculationsAbout Batch sales tax calculations | Included | Included | Included | |
Adjustments and reversalsAbout Adjustments and reversals | Included | Included | Included | Included |
Priority supportAbout Priority support | Included | Included | ||
Public API calls included each monthAbout Public API calls included each month | 1,000 | 15,000 | 75,000 | Custom |
Active API keysAbout Active API keys | 1 | 5 | 25 | 100 |
Monthly usage limitAbout Monthly usage limit | 8,000 | 50,000 | 500,000 | Custom |
Price for each extra API callAbout Price for each extra API call | $0.003 each | $0.002 each | $0.0015 each | Custom |
Highest possible monthly billAbout Highest possible monthly bill | $26 | $99 | $736.5 | Custom |
Support channelAbout Support channel | Priority | Dedicated |
Estimate a monthly bill
The estimator uses included usage, the price of each extra public API call, and the monthly usage limit.
Preset scenarios
- Every authenticated public API call counts
- Internal dashboard and worker calls do not count
- Plans never upgrade automatically
Your estimate
- Recommended plan
- Launch
- Public API calls
- Extra API calls
Estimated monthly cost
Estimate excludes taxes and negotiated Enterprise terms.
Frequently asked questions
Plain rules for developers and small teams.
What counts as an API call?+
Each request authenticated with an account API key and sent directly to a public /v1 endpoint counts once, including validation and application errors. Invalid or missing credentials cannot be attributed and do not count. Dashboard, control-plane, health, cron, and batch-worker requests do not count. A batch submission counts once. Processing its items internally creates no additional usage.
What happens at the monthly usage limit?+
What happens when evaluation ends?+
Do you charge per seat?+
Try 150 public API calls.
Verify your email to activate the one-time evaluation. No card required.
30-day evaluationNo recurring free allowanceNo seat fees