There is no single best sales tax software — there is a best fit per buyer profile. This guide compares eight platforms by profile, with published pricing where the vendor publishes it. We build one of the products on this list, so every competitor entry states plainly when that vendor is the better choice, and every competitor fact links to the page it came from.
Choose the calculation engine or the compliance workflow. Inspect the public examples, then bring five cases from your business.
Evaluate addresses, product identity, certificate dates, refunds and retries with the same inputs your integration will use.
Inspect calculation examples →Disclosed reference inputs and executed results. Confirm coverage and configuration for your own transactions.
Evaluate the calculation engine →Trace a generated sample return to its source rows. See how seller sales, marketplace activity and unresolved responsibility are separated.
Trace the sample return →Synthetic Virginia package demonstration. Review, authorization and state acceptance remain separate steps.
Evaluate sales tax compliance →Prefer to use your AI agent? Give it the evaluation brief →
See task rates and subscription prices. Public evidence is open to inspect; we confirm scope and commercial terms before a private evaluation.
Calculating tax at the time of sale, reviewing a period, and outsourcing filing are different purchases. Compare vendors against the same scope.
These are separate Prophit.ai modules with sales-assisted setup. Confirm jurisdiction coverage, transaction volume and integration mode during evaluation. If you want a provider to submit and remit on your behalf, compare the managed filing services below and verify the states and responsibilities in your agreement.
Compare the annual cost of your vendor quotes · See the compliance workflow · Review the calculation API
| Vendor | Best for | Published pricing |
|---|---|---|
| Prophit.ai | Teams that want sales tax, use tax and exemption certificates in one module-based workspace plan | Compliance $99/month/location; engine $99/month/location, separately. Bundles from $199/month/organization. |
| Avalara | Businesses prioritizing an established connector catalog and managed filing options | Avalara Core Compliance lists $799/state/year or $79/state/month for businesses below $50M annual revenue. Core Compliance + SST Services lists $699/state/year or $69/state/month, with qualification and state-funded-service conditions. Pricing checked September 12, 2026. |
| TaxJar | US ecommerce sellers, especially Stripe-centric ones | The pricing change took effect October 1, 2026. TaxJar says customers who signed up after February 26, 2026 keep their current pricing; existing customers should check Plans & Billing for account-specific terms. |
| Vertex | Global enterprises standardized on SAP or Oracle | Vertex does not publish list pricing for O Series; pricing is quoted per deployment. |
| Anrok | Pure SaaS companies with digital-product taxability and global VAT needs | Anrok publishes its standard Starter plan at $100 per market per month; each registered US state counts as a market. Its ecommerce plan uses custom pricing based on markets and volume. High-volume Starter sellers may incur additional fees. Pricing checked October 14, 2026. |
| Stripe Tax | Businesses whose billing already runs entirely through Stripe | from $90/month on a 1-year contract, tiered by volume: the $90 tier includes 2 registrations/year, 200 transactions/month, 2,000 API calls/month and 4 filings/year; higher tiers at $430, $1,000 and $1,500/month |
| TaxCloud | Cost-conscious US sellers who qualify for free Streamlined Sales Tax filing | filing from $39/month, with subscription or pay-as-you-go options; Colorado, Louisiana and Washington B&O surcharges apply; credit-card payments add a 7% convenience fee |
| Zamp | Teams that want a managed service to own the whole process | no list price published |
Choose Sales Tax Compliance for transaction review and filing-ready outputs, or the Sales Tax Engine for API calculation. Each is $99/month per location: compliance includes 2,500 transactions/month; the engine includes 10,000 calculations/month. Standalone activation is sales-assisted. Module-plan bundles start at $199/month per organization; compare the included modules and allowances before selecting a plan. These subscription prices are not pay-for-use task rates.
Choose Prophit.ai when taxability accuracy, purchasing-side coverage or included certificate management is the deciding factor — and look elsewhere if you need a vendor to file returns on your behalf today, which is listed below among the profiles other vendors serve better.
Sources: prophit.ai/pricing
Pricing model: Avalara Core Compliance lists $799/state/year or $79/state/month for businesses below $50M annual revenue. Core Compliance + SST Services lists $699/state/year or $69/state/month, with qualification and state-funded-service conditions. Pricing checked September 12, 2026. · Exemption certificates: Exemption Certificate Management is a separate product line with Essentials, Pro and Premium tiers rather than a feature of the calculation product. · Scope: A broad compliance platform spanning calculation, returns, exemption documents and cross-border, with a large connector catalogue.
Choose Avalara when: You need one vendor covering US sales tax, VAT and cross-border customs in a single contract. Or: Your stack depends on a specific pre-built connector in their catalogue and you do not want to integrate through an API. Or: You want the vendor to file and remit on your behalf across many states as a managed service. Or: You are already deployed on AvaTax, the implementation is stable, and per-state cost is not a pressure point.
Sources: www.avalara.com/us/en/products/sales-and-use-tax/pricing.html · www.avalara.com/us/en/products/sales-and-use-tax/compliance-document-management.html · www.avalara.com/us/en/products/sales-and-use-tax/avatax.html
October 2026 pricing update: The pricing change took effect October 1, 2026. TaxJar says customers who signed up after February 26, 2026 keep their current pricing; existing customers should check Plans & Billing for account-specific terms. · Published entry pricing: Starter starts at $39/month and Professional at $99/month at 200 orders/month. Professional includes real-time calculation; compare the order tier and API needs that fit your usage. · AutoFile service: Starter includes two AutoFile credits annually, with additional credits at $50. Professional includes four, with additional credits at $55. Confirm your account terms and filing cadence.
Choose TaxJar when: You require AutoFile to submit returns and remit tax for you, rather than a workspace for your team to prepare and approve outputs. Or: Your existing commerce integrations and calculation workflow already fit TaxJar and you do not need to replace them. Or: Your actual order tier, filing cadence and included credits produce a better full-service cost for your requirements.
Sources: support.taxjar.com/article/1227-frequently-asked-questions-taxjar-pricing-changes · www.taxjar.com/pricing
Pricing model: Vertex does not publish list pricing for O Series; pricing is quoted per deployment. · Scope: An enterprise indirect-tax determination engine positioned for complex jurisdictional and product rules, with deep ERP deployments.
Choose Vertex when: You run a large ERP landscape — SAP or Oracle at enterprise scale — with a dedicated indirect-tax IT team to own the integration. Or: Your product taxability matrix is genuinely exceptional: telecommunications, energy, heavily regulated manufacturing. Or: You need on-premise or hybrid deployment rather than a hosted service. Or: Procurement is comfortable with a quoted enterprise contract and a multi-quarter implementation.
Sources: www.vertexinc.com/solutions/products/vertex-indirect-tax-o-series
Pricing model: Anrok publishes its standard Starter plan at $100 per market per month; each registered US state counts as a market. Its ecommerce plan uses custom pricing based on markets and volume. High-volume Starter sellers may incur additional fees. Pricing checked October 14, 2026. · Scope: Sales tax and VAT for SaaS and digital businesses, including nexus monitoring, registration, filing and remittance.
Choose Anrok when: You are a SaaS or digital-goods business whose obligations are concentrated in a few markets. Or: You want registration, filing and remittance performed for you rather than prepared for your review. Or: Your international VAT and GST exposure matters as much as US sales tax. Or: You have no purchasing-side use tax problem to solve.
Sources: www.anrok.com/pricing
Tax Complete pricing: from $90/month on a 1-year contract, tiered by volume: the $90 tier includes 2 registrations/year, 200 transactions/month, 2,000 API calls/month and 4 filings/year; higher tiers at $430, $1,000 and $1,500/month · Tax Basic pricing: pay-per-use: 0.5% per transaction no-code, or 50¢ per API transaction; calculation only — no registration or filing
Choose Stripe Tax when Stripe is your billing stack and its published tiers fit your volume — Tax Complete starts at $90/month with 200 transactions/month and 4 filings/year included at that tier. If your sales run through channels beyond Stripe, or those caps are tight, a platform priced per organization fits better.
Sources: stripe.com/tax/pricing
Filing pricing: filing from $39/month, with subscription or pay-as-you-go options; Colorado, Louisiana and Washington B&O surcharges apply; credit-card payments add a 7% convenience fee · SST participation: Certified Service Provider in the 24 Streamlined Sales Tax member states, with free SST filing for qualifying sellers
Choose TaxCloud when you sell mainly in SST member states and qualify for free SST filing — that is a real cost advantage for eligible sellers. Outside SST, model the filing tiers, state surcharges and card fees against a flat price before deciding.
Sources: taxcloud.com/taxcloud-pricing/
Model: a managed service with software built in ("done for you" or "done with you"): Zamp handles registrations, filings and notices; billing is described as predictable with no per-transaction fees, but no list price is published
Choose Zamp when you want people, not software, to run registrations, filings and notices end to end and you are comfortable getting the price from a sales conversation — Zamp publishes no list price.
Sources: zamp.com/
Match the vendor to your profile: Prophit.ai for combined sales/use tax and included certificate management with published allowances; Avalara for its integration catalog and managed filings; Vertex for SAP/Oracle enterprises; Anrok for pure SaaS; Stripe Tax for Stripe-native billing; TaxCloud for SST-eligible sellers; Zamp for a managed service.
As of 2026-10-14: Prophit.ai module-based plans ($199/month and $599/month, flat per organization within included allowances), Stripe Tax (from $90/month, tiered), TaxCloud (filing from $39/month, tiered by returns) and TaxJar publish prices. Avalara publishes package pricing with usage-based components; Vertex and Zamp publish no list price.
Prophit.ai builds one of the products in this guide. Competitor facts were read from each vendor's own public pages (verified 2026-08-23 and 2026-10-14) and each entry states when that vendor is the better choice. Prophit.ai is not affiliated with any vendor listed. Verify current pricing with the vendor before buying.
