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Prophit.ai Sales Tax Engine
What Prophit.ai Sales Tax Engine is
Prophit.ai Sales Tax Engine determines sales tax before a transaction is finalized and sends the result back to the requesting system. It is presented for teams connecting checkout, billing, or ERP systems that need tax determinations during transaction processing. The engine resolves rooftop addresses to filing jurisdictions using boundary checks against Census geography, classifies products, exemptions, and separately stated shipping, then calculates tax at line level. Its transaction workflow covers quote, apply, commit, adjustment, refund, and void events linked to a transaction document. Records retain calculation inputs, resolved jurisdiction, content source, and line-level money math for review. Unresolved addresses, unclear products, or unknown marketplace responsibility block application rather than producing a guessed result. Committed determinations go to Sales Tax Compliance for an independent re-check at period close before return preparation. The product offers an API and file uploads, plus live connections for QuickBooks Online sales activity, Stripe billing, and Workday customer invoices. The listed plan is $99 a month, billed per location, and includes 10,000 calculations per month.
Who it suits
The engine suits teams connecting checkout, billing, or ERP transaction systems that need sales tax determination before transactions are finalized. It does not provide tax return filing or tax registration.
What it does well
- Calculates tax at line level
- Blocks application when key transaction details are unresolved
- Retains calculation details for review
- Includes 10,000 calculations per month
What to know first
- No free plan or free trial
- In-checkout integrations for several named services are in development
- Does not provide tax return filing or registration
Limits
The $99 a month per location plan includes 10,000 calculations per month. Tax return filing and tax registration are not included; several real-time apply, payment, marketplace, and settlement connections are described as in development.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Sales Tax Engine | Per location; sales-assisted setup; includes 10,000 calculations/month · 10,000 calculations/month · no per-state fee | $99 a month |
As prophit.ai lists them, read 8 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Sales Tax Engine website.
- Choose the paid Sales Tax Engine plan, starting at $99 a month per location.
- Arrange the sales-assisted setup.
- Connect through the documented API or use file uploads.
- Use a live data connection such as QuickBooks Online, Stripe, or Workday, if applicable.
Verdict
The engine focuses on transaction-level determination, with review records and checks that prevent guessed results in specified cases. Consider the per-location price and integration limits when evaluating it for a workflow.
Questions
How much does Prophit.ai Sales Tax Engine cost?
The Sales Tax Engine plan is $99 a month, billed per location. It includes 10,000 calculations per month and setup is sales-assisted.
Is there a free plan or free trial?
There is no free plan. The pricing note mentions a 30-day trial, while the separate free-trial field says no.
What platforms does it support?
The listed platforms are API and web. Documented API access and file uploads are available.
Which integrations are live?
Live data connections include QuickBooks Online sales activity, Stripe billing, and Workday customer invoices.
Does it file tax returns or handle registrations?
Tax return filing and tax registration are listed as unavailable. Committed determinations can flow to Sales Tax Compliance for an independent re-check before return preparation.
Facts from Prophit.ai Sales Tax Engine's own pages
- Address and jurisdiction
- It resolves rooftop addresses and maps them to filing jurisdictions using boundary checks against Census geography. · prophit.ai, 8 Oct 2026
- Company history
- Prophit.ai says it was founded in 2019 and has run production tax decisions since 2020. · prophit.ai, 8 Oct 2026
- Compliance handoff
- Committed determinations flow to Sales Tax Compliance at period close for an independent re-check before return preparation. · prophit.ai, 8 Oct 2026
- Content transparency
- The Sales Tax Atlas publishes the engine's content layer, including state guides and local rate pages with official source references. · prophit.ai, 8 Oct 2026
- Evidence
- It retains calculation inputs, resolved jurisdiction, content source, and line-level money math for review. · prophit.ai, 8 Oct 2026
- Fail-closed controls
- Unresolved addresses, ambiguous products, or unknown marketplace responsibility block application instead of prompting a guessed result. · prophit.ai, 8 Oct 2026
- Integration limits
- In-checkout real-time apply for QuickBooks, Workday, and Shopify, and Stripe payments, Connect-marketplace, and settlement profiles are described as in development. · prophit.ai, 8 Oct 2026
- Integrations
- The documented API and file uploads are available, with QuickBooks Online sales activity, Stripe billing, and Workday customer invoices listed as live data connections. · prophit.ai, 8 Oct 2026
- Purpose
- The engine determines sales tax before a transaction is finalized and returns the result to the system that requested it. · prophit.ai, 8 Oct 2026
- Tax calculation
- It classifies products, exemptions, and separately stated shipping before selecting rates and calculating line-level tax. · prophit.ai, 8 Oct 2026
- Transaction lifecycle
- The engine supports quote, apply, commit, adjustment, refund, and void events tied to the transaction document. · prophit.ai, 8 Oct 2026
- Who it is for
- The page presents the engine for teams connecting checkout, billing, or ERP transaction systems that need real-time sales tax determination. · prophit.ai, 8 Oct 2026
Where Prophit.ai Sales Tax Engine stands on Freedom251
- Sales Tax Software#14 of 24
- Tax Engine Software#18 of 28