September 8, 2026
Use Tax Software Evaluation: Review Vendor-Charged Tax in AP
Evaluate purchasing use tax software with a controlled invoice sample, documented exceptions, reviewer decisions, and an export your AP team can inspect.
Read ArticleResources & Insights
Expert articles, guides, and insights on sales tax compliance, exemption certificates, tax recovery, and AI-driven tax management.
Explore the Prophit Sales Tax Atlas
Go state by state through local-rate structures, sourcing rules, product wrinkles, marketplace treatment, exemptions, forms, filing paths, and official sources for all 50 states and Washington, DC.
Open the Sales Tax Atlas2026 sales tax data studies
Open, source-linked datasets: free to read, download, cite, and embed. Every figure is computed from published official sources and regenerates with the data behind it.
2026 filing calendarEvery state’s due dates, including the 199 that shift for a weekend or holiday. CSV + ICS.Local sales tax rate study3,836 published county and city combined rates, from 4% to 11.25%, with in-state spreads. CSV.Software pricing indexYear-one list-price cost of the major vendors at 1 to 25 filing states. CSV.Free rate data downloadsEvery dataset in one place: county/city rates, the 2026 calendar, and pricing research. CSV + ICS.
Buying guides & honest comparisons
Have a software quote? Calculate its first-year and recurring annual costs →
Sourced, dated, and rank-honest: every comparison states when the other vendor is the better choice, and every competitor fact links to the page it came from.
Best sales tax software 2026Eight platforms compared by buyer profile, with published pricing.Best AI sales tax softwareAI-native vs AI-added, and the evaluation checklist to tell them apart.Best ECM softwareIncluded vs add-on pricing, sales-side and purchasing-side coverage.Sales tax software buyer’s guideWhat to evaluate, by company profile — including switching scenarios.Switching guideThe two-step data problem: what to export, how to cut over, data back out augmented.Pricing models comparedAll six market pricing models with published numbers and sources.Avalara alternativesStructural differences, when Avalara wins, and what to export if you leave.TaxJar alternativesFlat pricing vs per-filing credits, and the purchasing side TaxJar doesn’t have.Vertex alternativesPublished pricing vs quote-only, and time-to-first-calculation.Anrok alternativesCompare ecommerce and other business plans, purchasing use tax, and workflow fit.
September 8, 2026
Exemption Certificate Software: A Buyer’s Validation Checklist
Test certificate collection, acceptance, transaction matching, renewal rules, and evidence exports before choosing exemption certificate management software.
Read ArticleSeptember 8, 2026
Sales Tax Reconciliation Software: Test One Period Before You Buy
A practical reconciliation test for sales tax software: match source totals, explain adjustments, resolve exceptions, and inspect filing-ready evidence.
Read ArticleSeptember 8, 2026
Sales Tax Audit Trail Software: An Evidence Export Checklist
Test whether tax software connects period totals to source invoices, treatment decisions, certificates, adjustments, and usable evidence exports.
Read ArticleAugust 16, 2026
Is SaaS Taxable? A Sales Tax Workflow for Software Companies
SaaS taxability varies by state, product design, customer use, and sourcing facts. Learn how software companies can turn that variation into a reviewable sales tax workflow.
Read ArticleAugust 16, 2026
Digital Products Sales Tax: Downloads, Streaming, Subscriptions, and Access
Digital product taxability depends on what is sold, how it is delivered, where the customer receives it, and which exemptions apply. Build a fact-based workflow for downloads, streaming, subscriptions, and remote access.
Read ArticleMay 12, 2026
Marketplace Sales Tax Software: A Mixed-Channel Evaluation Checklist
Evaluate marketplace sales tax software with separate collection, registration and reporting decisions, transaction evidence and practical integration tests.
Read ArticleMarch 9, 2026
Sales Tax Data Governance & MDM: A Software Evaluation Checklist
Evaluate sales tax data governance with source ownership, effective dates, retrievable evidence and five integration tests before buying software.
Read ArticleAI Sales Tax Software: An Evaluation Checklist
Evaluate AI sales tax software with reviewable sample cases, source evidence, exception handling and a clear view of the work your team still owns.
Read ArticleReverse Audit Software: Evaluate Evidence, Review and Recovery
Compare reverse audit software with supported intake tests, retrievable evidence, reviewed tax findings and jurisdiction-specific recovery requirements.
Read ArticleExemption Certificate Software: Customer and Vendor Workflow Checklist
Evaluate customer and vendor certificate workflows separately, including reviewed validity, document history, supported integrations and authorized delivery.
Read ArticleIndirect Tax Automation: Plan a Vendor Proof of Concept
Scope an indirect tax software pilot with evidence at each handoff, agreed acceptance criteria, measured review effort and a clear decision about the next rollout.
Read ArticleSales Tax Nexus: Physical Presence, Economic Thresholds and Marketplace Sales
Separate nexus, registration, marketplace collection and transaction taxability using current primary sources and a reviewable record of business facts.
Read ArticleLearn About Sales Tax Compliance, Exemption Certificates, and Tax Recovery
Our comprehensive resource library covers everything you need to know about indirect tax compliance, from understanding sales and use tax obligations to managing exemption certificates and recovering overpaid taxes. Whether you're looking to improve your tax processes, understand new regulations, or explore how AI can transform your tax management, you'll find expert insights and practical guidance in our articles.
Sales Tax Compliance Best Practices
Exemption Certificate Management
Tax Recovery and Reverse Audits
AI-Driven Tax Automation
Use Tax Compliance Strategies
Tax Technology Solutions
- The tax content is published and auditable: the Sales Tax Atlas carries 51 state and DC guides and 3,800+ county and city rate pages, each pinned to its official source.