Sales Tax Software Pricing Index 2026
What published list prices actually cost in year one, modeled at 1, 3, 5, 10 and 25 filing states. Only prices the vendors publish themselves — where a vendor publishes nothing, this study says so.
How much does sales tax software cost per year?
It depends far less on the sticker price than on the pricing model. From published list prices, a seller filing monthly in 10 states would pay $2,388 a year on a flat per-organization plan, $6,990 on a per-state entry tier, $6,000 on per-market pricing, and $6,368 on a subscription plus per-filing credits. Vertex does not publish a price at all. Every figure is list price as published on 2026-08-23, before negotiation.
Modeled year-one cost by number of filing states
| Vendor | Plan | 1 state | 3 states | 5 states | 10 states | 25 states | How it scales |
|---|---|---|---|---|---|---|---|
| Prophit.ai | Starter | $2,388 | $2,388 | $2,388 | $2,388 | $2,388 | Flat — does not change with states |
| Prophit.ai | Professional | $7,188 | $7,188 | $7,188 | $7,188 | $7,188 | Flat — does not change with states |
| Avalara | AvaTax entry tier | $699 | $2,097 | $3,495 | $6,990 | $17,475 | Entry tier is per state, per year |
| TaxJar | Starter | $968 | $2,168 | $3,368 | $6,368 | $15,368 | Subscription + $50 per filing beyond 2/year |
| TaxJar | Professional | $1,628 | $2,948 | $4,268 | $7,568 | $17,468 | Subscription + $55 per filing beyond 4/year |
| Anrok | Starter (eCommerce) | $600 | $1,800 | $3,000 | $6,000 | $15,000 | $50 per state, per month |
| Vertex | O Series | Quoted | Quoted | Quoted | Quoted | Quoted | No published price — quote only |
What the published prices show
- Pricing model matters more than headline price. A seller filing in 10 states pays $2,388 on a flat plan, $6,990 on a per-state entry tier, $6,000 on per-market pricing, and $6,368 once per-filing credits are added — from list prices alone.
- Per-state and per-filing pricing crosses the flat plan quickly: at 5 states the published per-state entry tier already exceeds a full year of the flat $199/month plan.
- Only 5 of the 6 vendor plans surveyed publish enough to compute a year-one cost at all. Vertex publishes no price; Avalara, Anrok, and TaxJar publish an entry tier and quote everything above it.
- Filing volume, not transaction volume, is what compounds on the per-filing model: monthly filing in 10 states is 120 filings a year, and only 2 to 4 of them are included.
- Flat pricing is not automatically cheaper: at one filing state the published per-state entry tier ($699) and per-market pricing ($600) both come in under the flat plan. The models cross as states are added.
- Every number here is a published list price, not a negotiated quote. Real quotes commonly differ — which is the point: list prices are the only thing a buyer can compare before talking to sales.
Every input, as published
Read from each vendor's own pricing page on 2026-08-23.
| Vendor | Plan | Pricing basis | Published price | Source |
|---|---|---|---|---|
| Prophit.ai | Starter / Professional | Flat per organization | Starter $199/month · Professional $599/month · Enterprise contract-defined | Pricing page |
| Avalara | AvaTax | Per state, per year (entry tier), usage-based above it | “Plans start at $699 per state, per year.” | Pricing page |
| TaxJar | Starter | Subscription + per-filing credits | $39/month at 200 orders · 2 AutoFile credits/year included · $50 per additional filing | Pricing page |
| TaxJar | Professional | Subscription + per-filing credits | $99/month at 200 orders · 4 AutoFile credits/year included · $55 per additional filing | Pricing page |
| Anrok | Starter (eCommerce) | Per market, per month — “each US state = one market” | $50 per market/month (eCommerce) · $100 per market/month (all other companies) | Pricing page |
| Vertex | O Series | Quote only — no published list price | Not published | Pricing page |
Methodology and limits
One return per state per month, twelve months of subscription, published entry tiers only. Excludes registration, implementation, annual-payment discounts, negotiated discounts, and overage above published order tiers. Prophit.ai figures come from the same canonical pricing model that drives /pricing. Not a quality ranking: coverage, integrations, filing services and support differ substantially between these products.
Cite this data
Free to cite, quote, or embed with attribution: "Prophit.ai 2026 Sales Tax Software Pricing Index, https://prophit.ai/resources/sales-tax-software-pricing-index-2026". Competitor prices are list prices published on 2026-08-23 and can change; confirm with the vendor. Not affiliated with or endorsed by the vendors named.