Best Tax Provision Software in 2026
Updated
In short: Flowie is ranked #1 of 19 as of 4 October 2026, ahead of OneStream and CSC Corptax. The lowest first paid tier on this page is Flowie at €12/mo.
Tax provision software covers tools for calculating, reviewing, and reporting tax provisions. Compare provision scope and accounting standards, then check for rate reconciliation, tax forecasting, and provision-to-return support. Excel workflow and jurisdiction limits can help distinguish how each tool fits your processes, while free-plan and paid-from details offer pricing context. Flowie, CSC Corptax, and OneStream are among the entries near the top, alongside Lucasys Tax Provision. Use the listed features to consider which standards, jurisdictions, and provision tasks your organization needs to handle.
19 tax provision software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
1 of the 19 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 | FlowieWeb · Self-hosted · API | Two bars | — | 1 of 6 | €12/mo | 6.4 | |
| 2 | OneStreamWeb · Windows · Android · iPhone · Self-hosted · API | Two bars | — | — | 4 of 6 | — | 5.7 |
| 3 | CSC CorptaxWeb | One bar | — | — | 1 of 6 | — | 5.5 |
| 4 | Lucasys Tax ProvisionWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 5 | ONESOURCE Tax ProvisionWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 6 | PowerPlan Tax ProvisionWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 7 | Tax SeriesWeb · API | One bar | — | — | 1 of 6 | — | 5.4 |
| 8 | TaxLab NucleusWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 9 | TaxProvision.netWeb | One bar | — | — | 1 of 6 | — | 5.4 |
| 10 | VenaWeb · Windows | One bar | — | — | 2 of 6 | — | 5.4 |
| 11 | Bloomberg TaxWeb | One bar | — | — | 1 of 6 | — | 5.3 |
| 12 | CCH TagetikNo platforms listed | No signal | — | — | 0 of 6 | — | 5.1 |
| 13 | KleosAndroid · iPhone | One bar | — | — | 2 of 6 | — | 5.1 |
| 14 | ONESOURCE Certificate ManagerWeb · Windows · Self-hosted · API | One bar | — | — | 2 of 6 | — | 5.1 |
| 15 | CCH Integrator Indirect TaxNo platforms listed | No signal | — | — | 0 of 6 | — | 5.0 |
| 16 | Oracle PeopleSoft Campus Solutions Financial AidWeb · Windows | One bar | — | — | 2 of 6 | — | 5.0 |
| 17 | Oracle Cloud EPM Tax ReportingWeb | One bar | — | — | 1 of 6 | — | 4.9 |
| 18 | Oracle Hyperion Tax ProvisionWeb · Windows | One bar | — | — | 2 of 6 | — | 4.9 |
| 19 | Taxstream ProVisionNo platforms listed | No signal | — | — | 0 of 6 | — | 4.9 |
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 provision software is ranked first on Freedom251?
Flowie is ranked #1 of 19 with a score of 6.4. OneStream is second and CSC Corptax third.
How many of these have a free plan?
1 of the 19 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Flowie has the lowest first paid tier we found: €12/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.