Sales tax infrastructure for SaaS finance teams.
Drop in a familiar tax API, record every invoice, and know which states are safe, approaching, or ready for registration before finance gets surprised.
- 50
- US states monitored
- API
- TaxJar-compatible surface
- $0
- revenue percentage fees
Nexus command center
May exposure forecast
Texas
$412k of $500k trailing revenue threshold
Washington
$118k of $100k trailing revenue threshold
Tennessee
$41k of $100k trailing revenue threshold
GET /api/v2/rates/37206
POST /api/v2/taxes
POST /api/v2/transactions
Not a filing bureau. Not a checkout add-on. Your SaaS tax control plane.
TaxMySaaS sits between spreadsheets and enterprise suites: API-first calculation, transaction evidence, nexus thresholds, projections, and alerts for US SaaS sellers.
A practical map through the compliance forest.
Drop-in API path
Use familiar TaxJar-style endpoints for rates, tax calculations, summary rates, API keys, and transaction capture.
SaaS nexus visibility
Track state thresholds with revenue and transaction projections built around recurring software revenue.
Audit-ready evidence
Record idempotent transaction data so finance can reconcile what was calculated, collected, and reported.
Webhook-driven ops
Notify your team when states approach nexus, thresholds are crossed, or transaction workflows need review.
From API call to action plan in three steps.
Keep your billing system, keep your finance workflow, and add the tax visibility layer that tells you when to collect, register, or slow down and review.
Calculate tax in your billing flow
Call the API from checkout, invoice generation, or a back-office job without changing your whole billing stack.
Record the transaction ledger
Store taxable sales, refunds, states, and collected tax with idempotency so finance has one source of truth.
Act before thresholds become emergencies
Use nexus status, projections, and webhooks to decide when to register, collect, export, or involve an advisor.
Priced for SaaS invoices, not surprise percentages.
Stripe Tax charges per taxable transaction, Anrok and Avalara move quickly into platform or custom pricing, and TaxJar is broader ecommerce compliance. TaxMySaaS keeps the first product narrow: predictable US SaaS tax infrastructure.
TaxJar
Great general sales-tax product; TaxMySaaS focuses the API and dashboard around SaaS revenue, projections, and migration simplicity.
Stripe Tax
Convenient inside Stripe; TaxMySaaS is processor-neutral and avoids percentage-of-revenue economics for high-value invoices.
Avalara
Powerful enterprise suite; TaxMySaaS is the lighter developer-first layer before you need a custom compliance program.
Anrok
Strong global SaaS compliance; TaxMySaaS starts narrower with predictable US sales-tax infrastructure and API compatibility.
Transparent plans that scale with API usage.
Start before your first nexus deadline. Upgrade when volume, teams, and state exposure grow. Overage is simple: $10 per additional 1,000 recorded transactions.
Every account starts free with 10 recorded transactions per month — no card required.
Starter
For early SaaS teams replacing spreadsheets before nexus gets complicated.
2,000 calls or recorded transactions included
- TaxJar-compatible rates and tax endpoints
- One workspace with API keys
- US nexus dashboard and state status
- CSV import/export workflow
- Email support
Growth
For growing SaaS teams approaching multi-state nexus and needing alerts.
15,000 calls or recorded transactions included
- Everything in Starter
- Unlimited team members
- Nexus projections and alert webhooks
- API migration support
- Priority support
Scale
For multi-state SaaS companies that want predictable tax infrastructure cost.
75,000 calls or recorded transactions included
- Everything in Growth
- Higher-rate API keys
- Dedicated onboarding
- Custom webhook routing
- Quarterly nexus review export
What TaxMySaaS does—and does not—do.
Does TaxMySaaS file returns for us?
Not as a hands-off filing bureau today. TaxMySaaS helps you calculate, collect evidence, monitor nexus, trigger alerts, and prepare exports so your finance team or advisor can act with confidence.
Can we migrate from TaxJar-style APIs?
Yes. The product is designed around a familiar TaxJar-compatible API surface so teams can test TaxMySaaS without rebuilding every billing integration first.
Why not just use Stripe Tax?
Stripe Tax is convenient if all tax decisions live inside Stripe. TaxMySaaS is for SaaS teams that want processor-neutral APIs, a transaction ledger, and flat pricing instead of percentage-based tax infrastructure cost.
Get the SaaS tax briefing before your next state threshold.
Join the launch list for implementation notes, migration help, and early access pricing.