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ULTX
🇺🇸US

UltraTax CS

Thomson Reuters' CS Professional Suite tax engine — the most-used US tax-prep software at the nation's largest firms.

Primary

Tax

Kind

Tax

Pricing

Enterprise per-return + per-seat; typically $2–$15k+/yr per firm

01Score Breakdown

Each dimension is a composite of public signals. The Index is a weighted average; weights are published on the methodology page.

Autonomy · 30%
48.0
Accuracy · 20%
90.0
Coverage · 13%
88.0
Local Fit · 13%
25.5
Integrations · 8%
70.0
Traction · 8%
88.0
Pricing · 8%
48.0
02Feature Coverage

Where the tool plays across the 17-category taxonomy used by this index.

General Ledger

The system of record — chart of accounts, journal entries, trial balance.

Transaction Categorization

Classifying bank and card transactions against a chart of accounts.

Bank Reconciliation

Matching ledger entries to bank statements; flagging discrepancies.

Accounts Payable

Bill capture, vendor management, approval workflows, payment execution.

Accounts Receivable

Invoicing, dunning, collections, payment matching.

Month-End Close

Accruals, deferrals, depreciation, task orchestration, review workflows.

Financial Reporting

P&L, balance sheet, cash flow, variance analysis, board-ready packs.

TaxPrimary

Income tax, sales tax / VAT / moms, nexus tracking, e-filing.

Audit Prep

Documentation, PBC lists, evidence trails, auditor collaboration.

Payroll

Wage calculation, withholdings, benefits, regulatory filings.

Multi-Entity Consolidation

Inter-company elimination, currency translation, consolidated statements.

Revenue Recognition

ASC 606 / IFRS 15 automation, performance-obligation tracking.

Expense Management

Corporate cards, expense policy, reimbursements, spend controls.

FP&A Copilot

Forecasting, budgeting, scenario modeling, variance commentary.

Natural-Language Interface

Conversational query, report generation, and action-taking via chat.

Practice Management

Firm-side workflow, client portals, deadlines, CRM, billing, and team orchestration for accounting and tax practices.

AI Tax Research

Generative-AI research and memo-writing assistants trained on tax code, rulings, and case law.

03Research

Among complex-return US tax practices, UltraTax CS is the default. The 2025 AICPA/Journal of Accountancy tax-software survey put it at the top of actual adoption among the largest firms (roughly a quarter of surveyed respondents), and its depth on multi-state partnerships, trust, consolidated C-corp, and international filings (5471, 5472, FBAR, 1040-NR, 1116, 8865) remains ahead of Drake, ProConnect, and Lacerte for anything non-trivial. For a firm that serves mid-market companies, family offices, or international individuals, the realistic choice is UltraTax CS, CCH Axcess, ProSystem fx, or GoSystem — and UltraTax CS is the most common of the four.

The agentic story here is deliberately narrow. Thomson Reuters has layered workflow (FirmFlow), document storage (FileCabinet CS / GoFileRoom), and AI-assisted research (Checkpoint Edge) around the tax engine, but the engine itself — the tax calculation and form generation — is rule-based, scrutinised, and will remain so. The meaningful AI shift in this stack in 2026 is in the surrounding suite: Checkpoint Edge's generative research over primary sources, and AI-drafted client-letter generation from return data.

Local fit is purely US and purely professional. Pricing is the other major trade-off — UltraTax CS is substantially more expensive per seat than Drake or ProConnect, and firms that migrate to CCH Axcess typically do so for the cloud architecture rather than the tax coverage itself.

Citations