What is the difference between GoSystem Tax RS and UltraTax CS?

Both are Thomson Reuters products, but they target different firm sizes. GoSystem Tax RS is browser-based and built for large multi-office firms needing centralized administration, role-based security, and very high return volumes, particularly complex consolidated corporate and partnership work. UltraTax CS is installed or hosted and aimed at small to mid-sized practices, with a more approachable interface and lower cost.

Yes. It runs in a browser against Thomson Reuters-hosted infrastructure, with no local installation on preparer machines. That removes per-workstation software maintenance, which is a substantial administrative saving in firms with hundreds of preparers across multiple offices.

What return types does it handle?

Individual, corporate, S corporation, partnership, fiduciary, estate and gift, and exempt organization returns, with multi-state allocation and apportionment. Its consolidated corporate return handling and partnership tiering are the capabilities large firms most often cite as the reason for choosing it.

What are the main alternatives?

CCH Axcess Tax from Wolters Kluwer is the primary competitor at enterprise scale, and firms usually evaluate the two against each other. Corptax is a further option for very large corporate tax departments. Smaller firms generally find UltraTax CS, Lacerte, or Drake Tax a better fit on both cost and complexity.

GoSystem Tax RS

Tax

Website: tax.thomsonreuters.com

GoSystem Tax RS at a glance

Best for: Large multi-office and national firms
Pricing model: Quote-based, by return volume and module
Deployment: Browser-based, hosted by Thomson Reuters
Regions: United States
Key integrations: Checkpoint, Onvio, GoFileRoom, Practice CS

Last reviewed July 2026. Pricing and features change frequently — confirm current details with the vendor.

GoSystem Tax RS is Thomson Reuters’ enterprise tax preparation platform for large accounting firms and multi-office practices — a browser-based application handling high volumes of complex corporate, partnership, individual, and fiduciary returns under centralized administration.

How accounting firms use it

Firms adopt it when scale and control matter more than ease of setup. Administrators manage user access, return templates, and configuration centrally, so a national firm can enforce consistent treatment across offices rather than leaving it to local preparers. Returns are worked in a browser, which removes the per-workstation installation and patching burden that desktop tax software creates at this size.

The platform is used heavily for consolidated corporate returns and tiered partnership structures, where a return may involve dozens of entities and multi-state apportionment. Multiple preparers and reviewers can work a single engagement concurrently, with role-based permissions controlling who can change what.

Key features

Return coverage spans individual, corporate, S corporation, partnership, fiduciary, estate and gift, and exempt organization filings, with automatic multi-state allocation. Diagnostics flag errors and inconsistencies before filing, and e-filing covers federal and state jurisdictions.

Integration with the wider Thomson Reuters suite is a significant part of the value: Checkpoint for research, GoFileRoom for document management, Onvio for client collaboration, and Practice CS for time and billing. Firms already standardized on that ecosystem get data flowing between research, workpapers, and the return without re-keying.

Who it’s best for

Large US firms, national practices, and the Top 100 — organizations with enterprise-scale volume, multi-office structures, and a need for centralized oversight and audit trails. The administrative overhead and cost only make sense at that scale.

Small and mid-sized practices almost always find UltraTax CS, Lacerte, or Drake Tax a better match. The realistic enterprise alternative is CCH Axcess Tax, and most firms at this size evaluate the two head to head.

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GoSystem Tax RS FAQ

What is the difference between GoSystem Tax RS and UltraTax CS?: Both are Thomson Reuters products, but they target different firm sizes. GoSystem Tax RS is browser-based and built for large multi-office firms needing centralized administration, role-based security, and very high return volumes, particularly complex consolidated corporate and partnership work. UltraTax CS is installed or hosted and aimed at small to mid-sized practices, with a more approachable interface and lower cost.
Is it cloud-based?: Yes. It runs in a browser against Thomson Reuters-hosted infrastructure, with no local installation on preparer machines. That removes per-workstation software maintenance, which is a substantial administrative saving in firms with hundreds of preparers across multiple offices.
What return types does it handle?: Individual, corporate, S corporation, partnership, fiduciary, estate and gift, and exempt organization returns, with multi-state allocation and apportionment. Its consolidated corporate return handling and partnership tiering are the capabilities large firms most often cite as the reason for choosing it.
What are the main alternatives?: CCH Axcess Tax from Wolters Kluwer is the primary competitor at enterprise scale, and firms usually evaluate the two against each other. Corptax is a further option for very large corporate tax departments. Smaller firms generally find UltraTax CS, Lacerte, or Drake Tax a better fit on both cost and complexity.

GoSystem Tax RS Alternatives

Other tax tools for accounting firms, ordered by how much of GoSystem Tax RS's functionality they cover.

Practice Management Tax

GoSystem Tax RS

GoSystem Tax RS at a glance

How accounting firms use it

Key features

Who it’s best for

GoSystem Tax RS FAQ

GoSystem Tax RS Alternatives

Canopy

ATX Professional

Avalara

CCH Axcess Tax

CCH ProSystem fx Tax

CrossLink Professional Tax