Best Tax Research Software in 2026
Updated
In short: IBFD Tax Research Platform is ranked #1 of 22 as of 2 October 2026, ahead of Bloomberg Tax and Tolley+ Research. The best-ranked option with a free plan is Instead. The lowest first paid tier on this page is Cassandra Tax & Legal AI at $45/mo.
22 tax research software ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Jurisdictions covered | |
|---|---|---|---|---|---|---|---|---|
| 1 |  IBFD Tax Research Platform | 6.8 | RecognisedAPIDocumented | — | — | — | — | View |
| 2 | Bloomberg Tax | 6.6 | RecognisedAPIDocumented | — | — | — | — | View |
| 3 |  Tolley+ Research | 6.6 | RecognisedAPIDocumented | — | No | — | — | View |
| 4 |  TaxGPT | 6.3 | RecognisedAPIDocumented | — | No | — | — | View |
| 5 |  Taxmann.com Research | 6.3 | RecognisedAPIDocumented | — | No | — | — | View |
| 6 | Tax Analysts Research | 6.2 | RecognisedAPIDocumented | — | — | — | — | View |
| 7 |  Orbitax Tax Research | 6.1 | RecognisedAPIDocumented | — | No | — | — | View |
| 8 | Tax Notes | 6.1 | RecognisedAPIDocumented | — | — | — | — | View |
| 9 | Blue J | 5.9 | RecognisedAPIDocumented | $124.83/mo | No | — | — | View |
| 10 |  CCH iKnowConnect | 5.8 | RecognisedAPIDocumented | — | No | — | — | View |
| 11 |  TaxPlead | 5.8 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 12 |  TaxBert | 5.7 | RecognisedAPIDocumented | — | No | — | 51 jurisdictions | View |
| 13 |  LEXinform | 5.7 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 14 |  Taxmann.AI | 5.5 | RecognisedAPIDocumented | ₹4,125/mo | No | — | — | View |
| 15 | Bizora AI | 5.4 | RecognisedAPIDocumented | — | No | 29.99 /user/mo | — | View |
| 16 |  Cassandra Tax & Legal AI | 5.4 | RecognisedAPIDocumented | $45/mo | No | — | — | View |
| 17 |  Taxsutra | 5.1 | RecognisedAPIDocumented | — | — | — | — | View |
| 18 |  FinRace AI | 5.1 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 19 |  TaxResearch | 5.0 | RecognisedAPIDocumented | — | No | — | — | View |
| 20 | Instead | 5.0 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 21 | Croner-i Tax | 4.8 | RecognisedAPIDocumented | — | No | — | — | View |
| 22 | Practical Law | 4.4 | RecognisedAPIDocumented | — | No | — | — | View |
Is your platform 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 research software is ranked first on Inferse?
IBFD Tax Research Platform is ranked #1 of 22 with a score of 6.8. Bloomberg Tax is second and Tolley+ Research third.
How many of these have a free plan?
1 of the 22 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, Cassandra Tax & Legal AI has the lowest first paid tier we found: $45/mo.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.