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In this blog, you'll learn
- Why Drake Tax wins on cost and speed for high-volume, straightforward returns
- When Lacerte or UltraTax CS are worth the higher price
- How ProSeries fits firms standardized on QuickBooks Online
- What switching tax software actually costs during a transition season
- How to segment return types across platforms as a firm grows
Introduction
Ask five CPAs which tax software is best and you will get five different answers, usually followed by a story about the year they switched and regretted it. Tax software decisions carry more weight than most other software choices a firm makes, because switching mid-career means relearning workflows during the busiest, least forgiving season of the year.
The best tax software for CPA firms depends primarily on return complexity and existing platform ecosystem. Drake Tax leads on value and speed for high-volume, less complex returns. Lacerte and UltraTax CS lead for complex returns and larger firms. ProSeries fits firms already standardized on QuickBooks Online. There is no single best answer, only the best fit for a specific firm's return mix.
This guide compares the four platforms US CPA firms use most, what drives the choice between them, and what a switch actually costs during an already demanding season. If you have not yet settled on a core accounting platform, our QuickBooks Online vs. Xero comparison is worth reading first, since tax software choice often follows that decision.
What Determines the Right Tax Software for a Firm?
Return complexity and volume are the two factors that matter most, ahead of price or interface preference. A firm doing 200 straightforward individual returns has different needs than a firm doing 40 complex partnership and trust returns, even if both firms are similar in size.
Secondary factors that shape the decision:
- Existing accounting platform. A firm standardized on QuickBooks Online benefits from ProSeries' tighter QBO integration.
- Firm size and staff count. Larger firms with more preparers benefit from platforms with stronger multi-user review workflows.
- Specialty work. Estate, trust, and multi-state returns favor platforms built for that complexity.
- Budget per return. Cost per return varies meaningfully across platforms at scale, which matters more for high-volume firms than for boutique practices.
Why Do High-Volume Firms Prefer Drake Tax?
High-volume firms prefer Drake Tax primarily because of its lower cost per return and faster data entry workflow, not because it handles complexity better than premium alternatives. Drake's flat-fee unlimited-return pricing makes the economics clear for firms doing hundreds of straightforward returns each season.
What makes Drake the volume choice:
- Speed of data entry. Drake's keyboard-driven interface is built for preparers who know exactly where every field lives, which matters when repeating the same return type dozens of times.
- Lower cost per return. At high volume, Drake's pricing structure produces a materially lower cost per return than Lacerte or UltraTax CS.
- Solid state coverage. Drake supports all states with e-filing, sufficient for the large majority of small and mid-size firm client bases.
Where Drake shows its limits: firms with a high concentration of complex multi-state, trust, or estate returns often find themselves working around gaps that premium platforms handle natively.
When Does a Firm Need Lacerte or UltraTax CS Instead?
Firms need Lacerte or UltraTax CS when their return mix includes significant complexity: multi-state allocations, trust and estate work, or large partnerships with intricate basis calculations. Both platforms are built to handle this complexity with fewer manual workarounds than Drake requires.
Specific situations that favor the premium platforms:
- High-net-worth individual returns. Complex investment income, multiple K-1s, and AMT calculations are handled more natively.
- Trust and estate practices. Both platforms have deeper built-in support for fiduciary return types than Drake.
- Large partnerships and S-corps. Basis tracking and allocation calculations across many partners are less manual.
- Firms already in the Thomson Reuters or Intuit ecosystem. UltraTax CS integrates with the broader CS Professional Suite; Lacerte integrates with the wider Intuit ecosystem including ProConnect and QBO.
The tradeoff is cost. Both platforms carry a meaningfully higher price per return than Drake, which only pays off when complexity, not volume, is the firm's actual bottleneck.
Tax Software Comparison: Drake vs. ProSeries vs. Lacerte vs. UltraTax CS
How Does ProSeries Fit Into a QuickBooks-Standardized Firm?
ProSeries fits best for firms already standardized on QuickBooks Online who want tighter integration between bookkeeping and tax prep, trading some of Lacerte's complexity-handling power for a smoother QBO-to-tax workflow. It sits deliberately between Drake's value positioning and Lacerte's complexity handling.
ProSeries makes the most sense when:
- The firm's client base is heavily QBO, and reducing friction between bookkeeping and tax prep saves real time each season.
- Return complexity is moderate, not requiring Lacerte's deeper fiduciary or multi-entity handling.
- The firm values a more modern, guided interface over Drake's faster-but-steeper learning curve.
What Does Switching Tax Software Actually Cost a Firm?
Switching tax software mid-career typically costs a firm one to two full tax seasons of reduced efficiency while staff relearn workflows, plus the direct cost of re-entering prior-year data that does not import cleanly. This is why most firms who switch do it in the off-season, never mid-filing-season, and budget for a rough first year.
The real costs to plan for:
- Prior-year data conversion. Most platforms offer conversion tools, but complex returns often need manual verification after conversion.
- Staff retraining time. Experienced preparers lose real speed for at least one full season on an unfamiliar platform.
- Client-facing disruption. If output formatting changes, clients sometimes notice and ask questions that take time to answer.
- Parallel licensing costs. Many firms run both the old and new platform for one transition season, doubling software cost temporarily.
Firms rarely switch tax software more than once every five to ten years for exactly these reasons. The decision deserves the same rigor as a major hiring decision, not a snap choice based on a single frustrating season. See our full implementation checklist for the phase-by-phase process once the decision is made.
Tax Software Pricing at a Glance
A Common Pattern: Outgrowing a Volume Platform
This is a pattern we see repeatedly as firms grow. A small firm starts on Drake because the return mix is simple and the price is right. As the firm adds clients, a handful of complex returns start showing up: a trust here, a multi-state partnership there. Staff begin building manual workarounds to handle what Drake was not built for, and those workarounds accumulate errors and time cost.
The firm eventually faces a choice: keep patching Drake with manual work, or absorb the cost and disruption of moving the complex-return segment to a platform built for it. Firms that wait too long to make this call often end up doing both: paying for Drake's full license while quietly losing hours per complex return to workarounds that a premium platform would have handled natively.
The firms that navigate this well typically segment their return types early: keep the high-volume, straightforward returns on the value platform, and route the complex minority to a premium platform or a specialized preparer, rather than forcing every return through the same tool regardless of fit. This is the same logic that applies to a firm's core accounting stack too, our guide to software for small CPA firms covers how to avoid over-buying there as well.
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How Etisson Supports Firms Across Tax Software Platforms
Etisson's tax associates provide data preparation and workpaper support across Drake, ProSeries, and Lacerte, not return preparation or signing. This means a firm's tax software choice does not limit which platform Etisson staff can support during a busy season.
Etisson's support model covers organizing source documents, preparing supporting schedules, and reconciling data between the accounting platform and the tax software, so the CPA's actual preparation and review time is spent on judgment calls, not data assembly. This is particularly valuable during the compressed weeks of tax season when every hour of preparer time has a real opportunity cost.
Use the Etisson ROI Calculator to see what offloading data preparation work could save your firm during peak season.
Book a free strategy call and we will walk through your current tax season workflow and show you where dedicated support reduces the most bottleneck time.
FAQs
What is the best tax software for a small CPA firm?
For small CPA firms with mostly straightforward individual and small business returns, Drake Tax typically offers the best combination of cost and speed. Firms with more complex return types should weigh Lacerte or UltraTax CS despite the higher cost per return.
Is Drake Tax good for complex returns?
Drake handles most standard complexity well, but firms with a significant volume of trust, estate, or complex multi-state returns often find themselves building manual workarounds that Lacerte or UltraTax CS handle more natively.
How much does professional tax software cost per return?
Cost per return varies significantly by platform and volume, with Drake generally producing the lowest cost per return at high volume and Lacerte or UltraTax CS carrying a meaningfully higher cost that becomes justified by complexity handling rather than price.
Should a CPA firm switch tax software?
Only when the current platform is genuinely creating workarounds, errors, or lost time proportional to the disruption cost of switching. Firms should switch in the off-season, never mid-filing-season, and budget for reduced efficiency during the first transition season.
What is the difference between ProSeries and Lacerte?
Both are Intuit products. ProSeries fits firms with moderate complexity who want tighter QuickBooks Online integration. Lacerte handles greater complexity, including deeper fiduciary and multi-entity support, at a higher price point.
Can a firm use more than one tax software platform?
Yes, and larger firms with varied return complexity often do, routing high-volume simple returns through a value platform and complex returns through a premium platform. This requires staff proficiency across both, which is a real training and coordination cost.
How does Etisson support firms during tax season regardless of software platform?
Etisson's tax associates prepare data and supporting workpapers across Drake, ProSeries, and Lacerte, so a firm's software choice does not limit the support available during peak season.
Conclusion
There is no universal best tax software, only the best fit for a firm's specific return complexity and volume. Drake wins on cost and speed for high-volume, straightforward work. Lacerte and UltraTax CS win on complexity handling for trust, estate, and multi-state returns. ProSeries fits firms prioritizing QuickBooks Online integration over raw complexity handling.
The mistake firms make most often is choosing based on a single bad season rather than their actual sustained return mix, or delaying a needed switch until manual workarounds have quietly eaten far more time than the switch itself would have cost.
Whatever platform a firm runs, the preparation work behind every return still has to get done. Etisson's tax associates support that preparation work across every major platform, so software choice never becomes a staffing constraint during the busiest weeks of the year.
