AgentTax
SALES TAX ENGINE

Pricing that scales with you

Start free. Scale when your agents do. No contracts, cancel anytime.

Monthly
Annual Save 20%
Need trade tracking too? View Bundle Pricing →
Free
$0forever

Explore the API. Build a proof of concept.

100 tax calculations / month
All tax calculation endpoints
50-state rate lookups
Hard cutoff at limit
MOST POPULAR
Starter
$25/mo

For teams shipping AI agents that buy or sell.

10,000 tax calculations / month
All tax calculation endpoints
1099 threshold tracking
Nexus detection
Transaction history & export
Hard cutoff at limit
Email support
Growth
$99/mo

For platforms with growing agent transaction volume.

100,000 tax calculations / month
Everything in Starter
Exemption certificate management
1099 reporting
Multi-entity support
$0.01/call overage
Priority support
Pro
$199/mo

For high-volume platforms processing at scale.

1,000,000 tax calculations / month
Everything in Growth
Bulk transaction processing
Custom tax rules
$0.005/call overage
Dedicated support
Enterprise
Custom

Custom volume, custom rules, dedicated support.

Custom calculation volume
Everything in Pro
Dedicated account manager
SLA guarantee
Custom integrations
On-call support

Questions

What happens if I go over my limit?
Free tier hits a hard cutoff — upgrade to keep going. Paid tiers allow continued usage with overage billing at the end of the cycle.
Can I switch plans?
Yes. Upgrade or downgrade anytime. Changes take effect on your next billing cycle.
Do I need a credit card for Free?
No. Sign up with just an email and get your API key instantly.
What counts as an API call?
Each request to /calculate, /verify, or /nexus counts as one call. Rate lookups (/rates) and health checks are free and unlimited.
Can I use both products?
Yes! We offer the Sales Tax Engine and Capital Gains Tracker separately or bundled at a discount. Check out our Bundle Pricing for combined plans.