Head-to-head · Small Business Tax Software
UltraTax CS vs ATX
UltraTax CS leads on 0 checks, ATX on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreUltraTax CS · 8.5/10
- Most featuresATX · 2 of 4
UltraTax CS scores higher on our rubric for small business tax software: 8.5 against 8.0 out of 10; our editors rank them #6 and #10.
UltraTax CS is the better fit for professional firms handling complex multistate returns. ATX is the better fit for firms needing extensive forms and research.
- UltraTax CS fits best
Professional firms handling complex multistate returns
- ATX fits best
Firms needing extensive forms and research
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Side by side
| Feature | UltraTax CS 8.5/10 Visit ↗ | ATX 8.0/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.5 | 8.0 |
| Ranking | #6 in Small Business Tax Software | #10 in Small Business Tax Software |
| Best for | Professional firms handling complex multistate returns | Firms needing extensive forms and research |
| Pricing model | Paid | Paid |
| Starting price | Pricing on request | — |
| Free plan | Not checked yet | — |
| Free trial | — | — |
| Deployment | Cloud, Desktop | Self-hosted, Desktop |
| Built for | Solo, Small business, Mid-market, Enterprise | Small business, Solo |
| Features UltraTax CS 0/4 · ATX 2/4 | ||
| Federal e-file | Not checked yet | ✓ (best) |
| State e-file | Not checked yet | ✓ (best) |
| Bookkeeping imports | Not checked yet | Not checked yet |
| Prior-year import | Not checked yet | Not checked yet |
| Specs | ||
| Business entity support | Not checked yet | C corporations, S corporations, partnerships, estates and trusts |
| Included state returns | Not checked yet | 0 returns |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | UltraTax CS is professional tax preparation software for accounting firms and tax preparers. It handles federal, state, and local returns for individuals, corporations, partnerships, estates, trusts, nonprofits, and other return types. The… Read the review → |
ATX is desktop, forms-based tax preparation software from Wolters Kluwer for CPAs, individual tax preparers, and small firms. It supports federal, state, and local returns across individual, C corporation, S corporation, partnership,… Read the review → |
Strengths and trade-offs
UltraTax CS — where it wins
- Covers federal, state, and local returns across major entity types
- Multistate allocation, apportionment, diagnostics, and validation tools
- Integrates with Thomson Reuters and partner practice-management products
Where it doesn't
- Custom pricing varies by users, returns, states, and jurisdictions
- The feature breadth may exceed the needs of simpler tax practices
- Designed for professional preparers rather than individual taxpayers
ATX — where it wins
- More than 6,000 federal, state, and local compliance forms
- Diagnostics flag e-filing errors, omissions, and overridden entries
- Includes tax research, electronic signatures, and payroll reporting
Where it doesn't
- ATX 1040 excludes state business returns
- Desktop software may not fit cloud-first workflows
- No free plan is available
- UltraTax CS8.5/10 · Pricing on request
A broad tax preparation suite for firms managing complex multistate returns.
Visit UltraTax CSFull verdict → - ATX8.0/10 · Paid
A forms-focused tax suite for firms handling complex federal, state, and local returns.
Visit ATXFull verdict →
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All small business tax software comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update



