Tech riderRev. 8 Oct 2026
Prophit.ai Sales Tax Engine
- 1Runs onAPI, Web
- 2Costspaid from $99/mo
- 3Tax return filingNo
- 4Tax registrationNo
- 5Marketplace supportYes
5 lines stated Written from the maker's own pages: prophit.ai

Overview
Prophit.ai Sales Tax Engine is ranked #24 of 28 in tax engine software on Specifiction. It runs on API, Web. There is no free plan. Paid plans start at $99/mo.
Prophit.ai Sales Tax Engine plans and pricing
All plansSales Tax Engine $99/mo Per location; sales-assisted setup; includes 10,000 calculations/month 10,000 calculations/month · no per-state fee prophit.ai · 8 Oct 2026
Compared on tax engine software
- Free plan
- Noprophit.ai
- Paid from
- $99/moprophit.ai
- Tax return filing
- Noprophit.ai
- Tax registration
- Noprophit.ai
- Marketplace support
- Yesprophit.ai
Facts
- 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
- Address and jurisdiction
- It resolves rooftop addresses and maps them to filing jurisdictions using boundary checks against Census geography.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
- Evidence
- It retains calculation inputs, resolved jurisdiction, content source, and line-level money math for review.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
- 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
- Fail-closed controls
- Unresolved addresses, ambiguous products, or unknown marketplace responsibility block application instead of prompting a guessed result.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
- 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
- Company history
- Prophit.ai says it was founded in 2019 and has run production tax decisions since 2020.prophit.ai · 8 Oct 2026
Best Prophit.ai Sales Tax Engine alternatives
See all 20 All accessCh 01 ShipVAT Free planFree trialAPI from $49/mo7.2 All accessCh 02 Vatstack Free planAPIWeb from $15/mo7.0 All accessCh 03 Zamp Free planAPI Free to start6.9 All accessCh 04 VAT Engine Free planAPIWeb Free to start6.8 All accessCh 05 VATCalc Calculator Free trialAPIWeb 6.7 All accessCh 06 Vertex for e-Commerce APIWeb 6.7
Where it ranks on Specifiction
- Best Tax Engine Software in 2026#24 of 28
- Best Sales Tax Software in 2026#18 of 25
Is Prophit.ai Sales Tax Engine yours?
Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.
Sources
- prophit.ai/products/sales-tax-engine· checked 8 Oct 2026
- prophit.ai/faq· checked 8 Oct 2026

