Best Tax Compliance Software in 2026
Updated
In short: LOVAT is ranked #1 of 108 as of 3 October 2026, ahead of Zamp and Kintsugi. The best-ranked option with a free plan is Zamp. The lowest first paid tier on this page is Taxmo at £9.99/mo.
Tax obligations vary, so software coverage and filing functions are useful points to weigh against your requirements. Compare jurisdictions covered and supported tax types, then consider filing support level and return filing. Sales tax calculation and tax registration represent other listed capabilities, while API access may be relevant when evaluating system connections. LOVAT, Zamp, and Kintsugi are options to compare across these features. Free-plan availability and paid-from pricing give cost context as you assess the coverage and functions that matter to your organization.
108 tax compliance software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
8 of the 25 here have a free tier you can use, 0 have open-source code on record, and 0 have full bars: free, open, on most of your devices and documented.
| # | App | Signal | Free tier | Open code | Devices | From | Score |
|---|---|---|---|---|---|---|---|
| 1 | LOVATWeb · Android · iPhone · API | Three bars | — | 3 of 6 | €27/mo | 7.9 | |
| 2 | ZampAPI | Two bars | — | 0 of 6 | Free | 7.7 | |
| 3 | KintsugiAPI | Two bars | — | 0 of 6 | $75/mo | 7.4 | |
| 4 | Tax1099Web · API | Two bars | — | 1 of 6 | $20.75/mo | 7.1 | |
| 5 | ONESOURCE DeterminationWeb | One bar | — | — | 1 of 6 | — | 6.9 |
| 6 | CCH SureTaxNo platforms listed | One bar | — | — | 0 of 6 | — | 6.9 |
| 7 | Sovos Tax DeterminationWeb · API | One bar | — | — | 1 of 6 | — | 6.8 |
| 8 | UFileNo platforms listed | Two bars | — | 0 of 6 | Free | 6.8 | |
| 9 | ONESOURCE Indirect ComplianceAPI | No signal | — | — | 0 of 6 | — | 6.7 |
| 10 | TaxmoAPI | Two bars | — | 0 of 6 | £9.99/mo | 6.7 | |
| 11 | TaxumoAPI | Two bars | — | 0 of 6 | Free | 6.7 | |
| 12 | Avalara AvaTaxWeb · API | One bar | — | — | 1 of 6 | $58.25/mo | 6.6 |
| 13 | Vertex Cloud Indirect TaxAPI | No signal | — | — | 0 of 6 | — | 6.6 |
| 14 | FortaxAPI | Two bars | — | 0 of 6 | ₹999/mo | 6.6 | |
| 15 | Sovos VAT ComplianceAPI | One bar | — | — | 0 of 6 | — | 6.5 |
| 16 | Vertex VAT ComplianceAPI | One bar | — | — | 0 of 6 | — | 6.5 |
| 17 | TaxuallyAPI | One bar | — | — | 0 of 6 | — | 6.5 |
| 18 | NumeralAPI | One bar | — | — | 0 of 6 | — | 6.5 |
| 19 | Tax SeriesWeb · API | One bar | — | — | 1 of 6 | — | 6.5 |
| 20 | AlphataxWeb · Windows · API | One bar | — | — | 2 of 6 | — | 6.5 |
| 21 | Stripe TaxAPI | One bar | — | — | 0 of 6 | — | 6.4 |
| 22 | Sovos Sales & Use TaxWeb | No signal | — | — | 1 of 6 | — | 6.4 |
| 23 | TaxBanditsWeb · Android · iPhone · API · Extension | Two bars | — | — | 3 of 6 | $19/mo | 6.4 |
| 24 | GSTHeroAPI | No signal | — | — | 0 of 6 | — | 6.3 |
| 25 | AnrokAPI | One bar | — | — | 0 of 6 | $50/mo | 6.2 |
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which tax compliance software is ranked first on Freedom251?
LOVAT is ranked #1 of 108 with a score of 7.9. Zamp is second and Kintsugi third.
How many of these have a free plan?
8 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Taxmo has the lowest first paid tier we found: £9.99/mo.
How is this list ranked?
Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation. Paid placements never change a rank.