What will your sales tax software actually cost?

Turn a vendor quote into a first-year budget. Add subscription, state, transaction, revenue, filing, and implementation charges. See the recurring cost and download the breakdown—no email required.

Calculate your quote ↓

Enter your quote

All amounts are USD. Use zero only when a fee does not apply. The calculation stays in your browser; input amounts are not sent to Prophit.ai.

Base subscription / month ($)Use the contracted monthly equivalent, including any annual commitment.

Recurring add-ons / month ($)Include required certificate, integration, support, or other module charges.

States with a separate feeOnly states charged outside the subscription.

Fee per state / year ($)Convert a monthly state fee to its annual amount.

Billable transactions / monthEnter transactions charged after included allowances. Use a representative month.

Fee per billable transaction ($)For example, enter 0.50 for a fifty-cent fee.

Revenue subject to a fee / month ($)Use the revenue basis your contract charges, which may differ from total sales.

Revenue-based fee (%)Enter 0.5 for half a percent. Twenty basis points equals 0.20%.

Billable returns / yearCount actual state and local returns after included filing credits.

Fee per billable return ($)Use a blended fee if rates vary; include separate local-return charges.

One-time implementation cost ($)Include quoted setup, migration, and onboarding charges.

Your cost breakdown

Enter a base subscription and the charges in your quote, then calculate. Unknown charges are not included in an estimate.

Estimates assume 12 months at the entered volume. This is a software budget, not a calculation of tax owed. Contract minimums, tier changes, credits, discounts, and unquoted charges need separate review.

Published Prophit.ai plan reference

Starter: $199/month flat ($2,388.00/year). Professional: $599/month flat ($7,188.00/year).

Starter supports 1 user and 1 location; Professional supports up to 5 users and 4 locations. Enterprise and provider arrangements require a scoped quote. These subscription figures are not an equivalent-service or savings claim: confirm the modules, users, locations, integrations, and filing responsibilities in each offer.

Compare plans and included workflows →

How to compare sales tax software costs fairly

A monthly headline price is only one part of a quote. Start by naming the job you are buying: tax determination inside checkout or billing, period-close reconciliation, purchasing use tax, exemption certificate management, or a managed filing service. Two offers can have similar prices and leave your team with very different work.

Use the same footprint. Give each vendor the same organization, location, user, state, sales-channel, and integration requirements. Do not compare a single-location plan with a portfolio-wide service.
Count the chargeable units. Monthly filings, quarterly filings, local returns, and amended returns do not have the same annual count. Check whether a transaction charge includes calculations, committed transactions, API calls, or all three.
Separate included usage from overages. Enter only the units charged outside an allowance. If the quote moves between tiers, run each tier separately. A single blended estimate will not predict a contract step-up.
Name the filing owner. Preparation, portal-upload output, submission, and remittance are separate responsibilities. Prophit.ai supports reviewed filing preparation; your team retains the authority for filing and payment. Include any external filing-service costs in the same comparison.
Test growth and renewal. Recalculate with next year’s expected volume and state footprint. Ask whether the renewal price, implementation charges, evidence export, and cancellation terms are written into the quote.

Check the formula

Recurring annual cost equals 12 × monthly subscription and add-ons, plus annual state charges, plus 12 × monthly billable transactions × transaction fee, plus 12 × monthly fee-bearing revenue × fee percentage ÷ 100, plus annual billable returns × return fee. First-year cost adds one-time implementation.

For an illustrative quote of $300/month, 24 chargeable returns at $40 each, and $500 implementation, the recurring annual cost is $4,560 and the first year is $5,060. This example is arithmetic, not a vendor price. Enter your actual contract to use the calculator.

Bring a real workflow to the demo

Ask the vendor to demonstrate a taxable sale, an exempt customer with incomplete documentation, a purchase with missing vendor tax, and a filing-period reconciliation. Request the source evidence, exception handling, reviewer controls, and export you would receive. The point is to establish what your team can complete with the product at the quoted price.

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