UltraTax vs Drake vs ProSeries: Tax Software AI Compared

Three of the most popular tax preparation platforms for CPA firms compared. All have AI features. Choice depends on firm size, ecosystem, and budget.

The short answer

• UltraTax CS — Mid-size to large firms with Thomson Reuters ecosystem
• Drake Tax — Solo and small firms
• ProSeries — Small to mid-size firms with Intuit ecosystem

For most firms: choose based on existing ecosystem alignment (Thomson Reuters vs Intuit) and firm scale.

Feature parity

All three offer:

• AI data extraction from K-1s, 1099s, brokerage statements
• Smart import
• Anomaly detection
• Practice management integration

Differences are at the margins for routine returns.

Pricing

• UltraTax CS: $1500-3000/CPA/year + per-return fees
• Drake Tax: $300-800/CPA/year
• ProSeries: $500-1500/CPA/year

Drake is most affordable. UltraTax is premium. ProSeries in between.

Ecosystem alignment

• UltraTax integrates with Westlaw, Practical Law (Thomson Reuters)
• ProSeries integrates with QuickBooks (Intuit)
• Drake has standalone ecosystem with various integrations

Choose based on which research and practice management ecosystem the firm uses.

When each wins

UltraTax CS: Firm wants Thomson Reuters integration, mid-size to large scale, premium tools.

Drake Tax: Solo and small firms, budget-conscious, mature platform with strong support.

ProSeries: Intuit ecosystem alignment, small to mid-size firm, QuickBooks integration valued.

What we recommend

For firms making fresh decision:

• 1-2 CPA firm: Drake or ProSeries based on QuickBooks usage
• 3-10 CPA firm: ProSeries or Drake, evaluate UltraTax if Thomson Reuters integration matters
• 10+ CPA firm: UltraTax, Lacerte, or CCH Axcess
• Firms on existing platform: stay unless specific reason to switch

Bottom line

All three work. Choice based on ecosystem, scale, and budget rather than dramatic AI feature differences. The transition cost from one to another is significant; switch deliberately.