How much does sales tax software cost?

The short answer, by buyer profile

Both profiles assume Shopify, monthly filing cadence, and annual billing, with the SST Certified Service Provider credit applied where a seller would qualify. Change the assumptions.

What each platform costs, ranked

Estimated annual cost for the two profiles above. A vendor shown as a range is ordered by the midpoint of that range rather than its floor, so its row can sit above a published price that is lower. The ranked comparison orders the same rows by floor instead, which moves those vendors up. Each provider name links to its full pricing page, plan ladder, and source list.

Zamp is quote-only and shown as an observed range from buyer data. Avalara publishes per-state list pricing below $50M in revenue on a limited set of non-ERP integrations, shown here as a floor; above that, or on any ERP, it is quote-only and shown as an observed range. Methodology · Last updated based on each provider's most recently verified source.

What actually drives the bill

The $4,298 to $35,779 spread is not a quality difference. It is 4 incompatible pricing models applied to the same work. The model matters more than the sticker price, because it decides what happens to your bill when the business changes.

The cheapest way in with each platform

Entry price is the number vendors market and the number that least resembles a real bill, because filing is usually charged separately. Both halves are shown together here for that reason.

What is not in any of these numbers

Implementation and onboarding

The one-time cost of getting live: connecting the platform, mapping product taxability, and importing history. 7 of the 8 tracked platforms have no implementation fee on record, though only 3 address it explicitly on a pricing page. Where a figure exists for the rest it comes from buyer aggregators, not the vendor.

No fee on record: Anrok (no fee found, not stated either way); Kintsugi (says so on its pricing page); Numeral (no fee found, not stated either way); Sphere (says so on its pricing page); TaxCloud (says so on its pricing page); TaxJar (no fee found, not stated either way); Zamp (no fee found, not stated either way)

Fee exists: Avalara (buyer-reported $2,500–$50,000; the vendor publishes nothing)

Overage, once you pass the included volume

Every volume-priced plan has a ceiling and a rate beyond it. The rate is the part that decides what a good year costs you, and it is the least published number in the category. Not one of the 6 platforms whose pricing model has an overage concept attaches a rate to it in public. The other 2 (Kintsugi, Numeral) have no overage concept, which is a different thing from not publishing one.

Overage applies, no rate published: Anrok; Avalara; Sphere; TaxCloud; TaxJar; Zamp

State permit fees

Charged by the state, not the software vendor, when you register for a sales tax permit. They range from nothing to a few hundred dollars per state and pass straight through. No provider on this site includes them in a subscription price, and this site does not model them.

Your own team's hours

Reviewing returns, reconciling what the platform filed against your books, chasing exemption certificates, and answering state notices. This is usually the largest line in the real cost of compliance and no vendor can price it for you. This site does not estimate it, because any number would be invented.

The full fee-by-fee breakdown, including which vendors charge something they do not put a number on, is at sales tax software hidden fees.

How to get a number for your own business

The three inputs that move the answer most are the number of returns you file in a year, the number of states you file in, and how many of those states you have physical presence in. The third one is the least obvious and the most expensive to get wrong: it decides whether you qualify for state-funded filing under the Streamlined Sales Tax program, which is the largest single line this calculator can take off a qualifying seller's bill. It removes a line rather than the bill, and it is decided state by state.

Run every tracked platform against your numbers

Frequently asked questions

How much does sales tax software cost?

$4,298 to $35,779 per year, depending on your order volume, how many states you file in, and which pricing model the vendor uses. For a business doing 50K orders · 120 filings · 10 states · 5 SST · Shopify, the 8 tracked platforms range from $4,298 to $22,379. For 250K orders · 200 filings · 20 states · 10 SST · Shopify, $6,998 to $35,779.

What is the cheapest sales tax software?

On published pricing, for the profiles modeled on this site, TaxCloud at $4,298 per year for an SMB profile. That is a list-price comparison, not a like-for-like one: the platforms differ in what the price includes, and the vendors publish very different amounts of pricing, so some positions are prices and some are floors or observed ranges. The profile-by-profile breakdown, including the profiles where the answer changes, is at /cheapest-sales-tax-software.

Why is the price range so wide for the same work?

Because the pricing models are not comparable. The 8 platforms split into 4 models: Flat rate per state or region (Anrok, Sphere); Per filing and per registration (Kintsugi, Numeral); Quote only (Avalara, Zamp); Tiered subscription on order volume (TaxCloud, TaxJar). A business filing 240 returns across 20 states pays very differently under per-filing pricing than under per-state pricing, even though the compliance work is identical.

Is sales tax software priced per state or per filing?

Both, and neither is universal. Across the 8 platforms tracked here there are 4 distinct models: 2 use flat rate per state or region (Anrok, Sphere); 2 use per filing and per registration (Kintsugi, Numeral); 2 use quote only (Avalara, Zamp); 2 use tiered subscription on order volume (TaxCloud, TaxJar). Which one suits you depends on the shape of your business rather than its size. A wide, thin footprint favours per-filing pricing at a low filing cadence and is punished by it at a monthly one. High volume concentrated in a few states favours per-state pricing. No platform in this set prices on a straight percentage of revenue.

What costs are not included in a sales tax software subscription?

Four things, none of them in a subscription price: Implementation and onboarding; Overage, once you pass the included volume; State permit fees; Your own team's hours. State permit fees are charged by the state and pass straight through. Implementation is either free or unrecorded at most vendors in this set, and reaches five figures at the enterprise end. Overage rates above the included volume are the least-published number in the category.

Do I need sales tax software at all?

If you file in one or two states with low order volume, filing directly through each state's portal is free and many businesses do exactly that. Software starts paying for itself when the number of returns, the number of jurisdictions, or the taxability complexity of what you sell makes manual filing a recurring drain. This site does not model the cost of doing it yourself, because the honest input is your own team's hours and only you have that number.

How much does sales tax software cost for a small business?

For 50K orders · 120 filings · 10 states · 5 SST · Shopify, the 8 tracked platforms run from $4,298 to $22,379 per year, with the middle of the ranked list at about $8,245. Below that volume, several platforms have free tiers that cover monitoring and calculation but not filing.