I'm an accountant and need to file taxes for my clients. What is the best professional tax software?

For an accountant preparing client tax returns professionally, the “best” software depends mostly on your firm size, return complexity, volume, and whether you prefer cloud or desktop. There is no single winner for every practice. A recent professional survey of tax preparers found the most-used major platforms included Thomson Reuters UltraTax CS, Intuit Lacerte, Drake Software Drake Tax, and Wolters Kluwer CCH Axcess Tax.

Here is how I would narrow it down:

Acculink CPA Journal of Accountancy### My practical shortlist by practice type

• Solo CPA/EA preparing mostly 1040s: Drake Tax or ProConnect Tax
• Small firm (1–10 preparers) with individuals + S corps + partnerships: Lacerte or Drake Tax
• High-net-worth clients, complex K-1s, estates, international forms: UltraTax CS or Lacerte
• Growing multi-office firm: CCH Axcess Tax or UltraTax CS
• Cloud-only practice: CCH Axcess Tax or ProConnect Tax

Before buying, test these five things

1. Import a few of your hardest prior-year returns.
2. Check state return coverage for the states you file.
3. Compare the 3-year total cost, including e-file fees, states, and add-ons.
4. Test reviewer workflow if you have staff.
5. Confirm integration with your document portal, bookkeeping software, and practice management system.

If you tell me:

• number of returns/year,
• % individual vs business (1040, 1065, 1120S, 1120),
• number of preparers,
• states filed,
• cloud vs desktop preference,

I can narrow it to the 2–3 best choices for your firm.

Choosing the "best" professional tax software depends heavily on your firm's size, your budget, and the complexity of the returns you file. Industry surveys and CPA consensus consistently point to a few market-leading platforms.

The top professional tax software options used by accountants are categorized below by their primary strengths:

• UltraTax CS (by Thomson Reuters)
  • Best For: Mid-to-large firms handling complex business, multi-state, and fiduciary returns.
  • Key Strengths: Consistently ranks as a top choice among CPAs due to its incredible depth, robust diagnostics, and seamless integration with Thomson Reuters ecosystem tools like Onvio and TaxCaddy.
• Drake Tax
  • Best For: Value, high-volume efficiency, and smaller-to-midsize practices.
  • Key Strengths: Highly praised for its exceptional price-to-performance ratio, straightforward interface, fast calculation speeds, and inclusive pricing model that typically includes all states and unlimited individual/corporate packages without hidden per-return fees.
• Lacerte (by Intuit)
  • Best For: Established, high-volume practices wanting robust automated diagnostics.
  • Key Strengths: Known for its screen-appearance-matches-the-form layout and powerful diagnostic system that aggressively flags errors or missing data. It integrates smoothly with QuickBooks and the broader Intuit ecosystem.
• CCH Axcess Tax (by Wolters Kluwer)
  • Best For: Large, enterprise-level CPA firms requiring cloud-native infrastructure.
  • Key Strengths: A fully cloud-based, integrated tax, workflow, and client-portal suite. It excels at handling massive corporate structures, deep tax research integration (IntelliConnect/AnswerConnect), and multi-user collaboration.
• ProSeries (by Intuit)
  • Best For: Small-to-midsize independent accounting and tax shops.
  • Key Strengths: Offers a choice between desktop and hosted versions, a gentler learning curve than its heavy-hitting sibling Lacerte, and flexible pay-per-return or unlimited pricing tiers.

To help narrow down which system fits your practice, let me know:

• What is the approximate volume and type of returns you plan to file (mostly 1040s, or heavy corporate/partnership)?
• Do you prefer a traditional desktop setup or a fully cloud-based workflow?
• What is your budget range?

Best overall: Drake Tax for many independent accounting firms—strong coverage, efficient workflow, and good value.

• Drake Tax: Best value/overall for small-to-mid-size practices.
• Lacerte: Best for highly complex individual/business returns.
• UltraTax CS: Excellent for established firms with multiple preparers.
• ProConnect Tax: Best if you work heavily in QuickBooks Online.
• CCH Axcess Tax: Strong choice for larger, cloud-focused firms.

The IRS requires e-file software to pass its Modernized e-File testing, so verify the specific forms/states you need rather than assuming coverage.

If you tell me roughly how many returns you prepare/year and your mix of 1040, 1120S, 1065, and 1120, I can recommend the best one for your practice.

Choosing the "best" professional tax software depends heavily on your firm's size, your budget, your preferred workflow (desktop vs. cloud), and the complexity of your clients' returns.

The industry standard professional tax packages break down into top contenders based on your specific practice needs:

1. Drake Tax
   • Best For: Value, all-around efficiency, and smaller-to-midsize firms.
   • Why it’s top-tier: Drake is widely praised for offering robust performance, fast calculations, and comprehensive form coverage at a fraction of the cost of its mega-competitors. It includes e-signing, client portals, and a famously straightforward, no-nonsense interface.
2. Thomson Reuters UltraTax CS
   • Best For: Mid-to-large, growing, or highly complex accounting practices.
   • Why it’s top-tier: It handles intricate multi-state corporate, trust, and individual returns seamlessly with deep form support. It integrates tightly with the broader Thomson Reuters CS Professional Suite (like Practice CS and Accounting CS), making it a powerhouse for established firms—though it comes with a steep learning curve and higher price tag.
3. Intuit ProConnect Tax
   • Best For: Cloud-native, modern, or remote-first practices.
   • Why it’s top-tier: Unlike traditional desktop software that requires remote hosting, ProConnect is fully cloud-based and runs right in your browser. If you already live in the Intuit ecosystem (like QuickBooks Online Accountant ), the data-pull features between books and tax forms are massive time-savers.
4. Intuit Lacerte Tax
   • Best For: High-volume, complex traditional desktop environments.
   • Why it’s top-tier: Lacerte is legendary for its diagnostics engine and granular input screens. It’s built to churn through massive numbers of complex individual and business returns with absolute speed, though it is one of the pricier options on the market.
5. TaxAct Professional
   • Best For: Budget-conscious or seasonal/low-volume preparers.
   • Why it’s top-tier: Offers flexible pricing models (including pay-per-return options) so you don't have to bite the bullet on an expensive unlimited bundle right out of the gate. It provides solid core e-filing and client management tools without unnecessary bloat.

To help narrow down the ideal fit, tell me:

• What is your client volume and mix (mostly 1040s, or heavy corporate/partnership/trust work)?
• Do you prefer a cloud-based (browser) system or a desktop installation?
• Are you flying solo or managing a multi-user firm?

If you're preparing U.S. tax returns professionally for multiple clients, there isn't one universal winner. The best choice depends heavily on your client mix, return volume, and whether you need individual returns only or also partnerships, S-corps, C-corps, trusts, nonprofits, etc.

My shortlist

🥇 What I'd choose

For a typical independent accountant: Drake Tax.

It's particularly attractive when you have a substantial number of 1040s plus some 1065, 1120-S and 1120 returns. A recent 2026 comparison likewise found Drake particularly strong on cost per return, while ProSeries was stronger for complex entities and Intuit integration.

For a larger CPA firm handling complicated returns: I'd lean toward UltraTax CS or Lacerte. You're paying more, but advanced diagnostics, forms coverage, workflow, and support become more important than simply minimizing the cost per return.

For a small practice that wants simplicity: TaxAct Professional or Drake are worth serious consideration.

One important point: don't evaluate software solely on whether it says it supports e-filing. The IRS maintains approved Modernized e-File providers and specifically cautions practitioners to verify that a provider supports all of the forms/services they need.

What I'd compare before buying

For an accountant, I'd score each package on:

• 1040 volume pricing — per-return vs unlimited
• 1065 / 1120-S / 1120 support
• 1041, 990, 706, 709 if applicable
• State returns and multi-state capability
• K-1 import/export
• Prior-year conversion
• Diagnostics and error checking
• Organizer/client portal
• Document management
• E-signature
• Tax research integration
• Accounting software integration
• Remote/cloud access
• Technical support during filing season
• EFIN/ERO and e-file workflow
• Cost when your practice grows

The IRS also provides an authorized-provider database for tax professionals, so it's worth confirming the current e-file status of whatever package you select.

If you tell me approximately how many returns you prepare per year (e.g. 100, 500, 1,000+), and what percentage are 1040 vs 1120-S/1065/1120, I can narrow this down to the best 2–3 options and compare their current 2026 pricing and features.

It's particularly attractive when you have a substantial number of 1040s plus some 1065, 1120-S and 1120 returns. A recent 2026 comparison likewise found Drake particularly strong on cost per return, while ProSeries was stronger for complex entities and Intuit integration.

For a larger CPA firm handling complicated returns: I'd lean toward UltraTax CS or Lacerte. You're paying more, but advanced diagnostics, forms coverage, workflow, and support become more important than simply minimizing the cost per return.

For a small practice that wants simplicity: TaxAct Professional or Drake are worth serious consideration.

One important point: don't evaluate software solely on whether it says it supports e-filing. The IRS maintains approved Modernized e-File providers and specifically cautions practitioners to verify that a provider supports all of the forms/services they need.

When choosing professional tax software for an accounting practice, the "best" choice depends heavily on your firm's size, budget, the complexity of your clients' returns, and whether you prefer a desktop or cloud-based workflow.

The industry is dominated by a few powerhouse ecosystems, alongside strong budget and mid-tier alternatives:

• Intuit Lacerte
  • Best for: Established, high-volume, and complex practices handling large numbers of corporate, partnership, and multi-state returns.
  • Why choose it: Known for its incredible depth, automated diagnostics (finding errors or optimization opportunities before filing), and speed. It uses a "input-driven" design that veteran CPAs love, though it carries a steeper price tag. (Intuit also offers ProSeries , a more affordable, form-oriented alternative for smaller firms).
• Drake Tax
  • Best for: Solo practitioners, budget-conscious practices, and startups.
  • Why choose it: Widely regarded as the best value in the industry. Drake offers transparent, flat-rate pricing (often with unlimited e-filing or pay-per-return options) and is legendary for its responsive customer support. The interface is utilitarian and less flashy, but it gets through 1040s and business returns efficiently.
• Thomson Reuters UltraTax CS
  • Best for: Mid-to-large firms wanting deep, seamless integration with a comprehensive suite.
  • Why choose it: Part of the broader CS Professional Suite, UltraTax shines if you want your trial balance, practice management, document storage, and tax compliance tied together tightly. Its data-flow capabilities across entity types are exceptionally robust.
• Wolters Kluwer CCH Axcess Tax / ProSystem fx
  • Best for: Enterprise-level and top-tier CPA firms with highly complex corporate or international tax needs.
  • Why choose it: CCH Axcess is a fully cloud-native suite built for heavy-duty tax compliance and expansive collaboration. It handles the most intricate multi-state and corporate consolidation scenarios, though the learning curve and costs are substantial. (ATX is Wolters Kluwer's more scaled-down option for smaller offices).
• TaxAct Professional
  • Best for: Small-to-mid-sized firms looking for transparent, predictable mid-tier pricing.
  • Why choose it: TaxAct provides a solid middle ground with public, straightforward pricing that avoids opaque enterprise sales calls. It includes multi-user options and covers all major federal/state individual and business forms without the complexity or high overhead of the enterprise suites.

To help narrow down which platform fits your workflow best, tell me:

• What is your client mix? (Primarily individual 1040s, or heavy corporate/partnership/trusts?)
• Do you prefer cloud-based or desktop software?
• Roughly how many returns do you plan to file this upcoming season?

If you’re filing taxes professionally for multiple clients, I’d narrow the field to Drake Tax, Lacerte, UltraTax CS, CCH Axcess Tax, and ProSeries. A 2026 professional-preparer survey puts UltraTax, Lacerte, Drake, CCH Axcess, and ProSeries among the most-used major systems.

My recommendation

🥇 Best overall for most independent accountants: Drake Tax

Drake is the one I’d recommend starting with unless your practice has unusually complex returns or you need a particular cloud ecosystem. It offers extensive federal/state forms, diagnostics, multi-state filing, K-1 workflows, business returns, and practice-management integrations. Its 2026 Pro pricing starts around $1,895 for a 250-return tier and $3,145 for unlimited individual/business returns, depending on configuration.

It also won the 2026 CPA Practice Advisor Readers' Choice category for federal/state income-tax preparation, with 39.6% of the vote.

When I'd choose something other than Drake

Choose Lacerte if you're routinely handling highly complex individual, partnership, S-corp, estate/trust, multi-state, or other specialty returns. You're paying more, but the depth can justify it for a sophisticated practice.

Choose UltraTax CS if you're building a larger CPA firm with multiple preparers and want a broader Thomson Reuters ecosystem. UltraTax was actually the most-used product in the 2026 tax-software survey at 22.3%.

Choose CCH Axcess Tax if cloud architecture and firm-wide workflow are more important than getting the lowest software cost.

Choose ProConnect Tax Online if most of your accounting work is already in QuickBooks Online and you want the tax software tightly integrated with that environment.

One important question

The "best" choice changes dramatically based on your client mix. If you tell me approximately:

• # of returns per year (e.g., 100, 500, 1,000+)
• % 1040 vs. business returns
• Whether you prepare 1120-S, 1065, 1120, 1041, 706, etc.
• How many preparers/users
• Whether you want cloud/browser-based or desktop
• Your approximate software budget

…I can give you a specific 2026 recommendation and estimated annual cost, including Drake vs. Lacerte vs. UltraTax vs. CCH Axcess.

Drake is the one I’d recommend starting with unless your practice has unusually complex returns or you need a particular cloud ecosystem. It offers extensive federal/state forms, diagnostics, multi-state filing, K-1 workflows, business returns, and practice-management integrations. Its 2026 Pro pricing starts around $1,895 for a 250-return tier and $3,145 for unlimited individual/business returns, depending on configuration.

It also won the 2026 CPA Practice Advisor Readers' Choice category for federal/state income-tax preparation, with 39.6% of the vote.

When I'd choose something other than Drake

Choose Lacerte if you're routinely handling highly complex individual, partnership, S-corp, estate/trust, multi-state, or other specialty returns. You're paying more, but the depth can justify it for a sophisticated practice.

Choose UltraTax CS if you're building a larger CPA firm with multiple preparers and want a broader Thomson Reuters ecosystem. UltraTax was actually the most-used product in the 2026 tax-software survey at 22.3%.

Choose CCH Axcess Tax if cloud architecture and firm-wide workflow are more important than getting the lowest software cost.

Choosing the "best" professional tax software depends heavily on your firm's size, budget, client complexity (e.g., multi-state corporate vs. straightforward 1040s), and existing tech ecosystem.

The industry is dominated by a few powerhouse options tailored for accounting professionals:

• Drake Tax: Best Value / Budget-Friendly
  • Overview: Widely praised as the best "bang for your buck". It is a fast, highly functional, form-based software that includes unlimited federal and state returns in its packages.
  • Pros: Incredible pricing, excellent customer support, low learning curve for straightforward returns.
  • Cons: Feels a bit old-school/form-heavy and less visually modernized compared to competitors; multi-state or ultra-complex corporate returns can feel more manual.
• Intuit ProConnect / Lacerte: Best for Intuit/QuickBooks Integration
  • Overview: Lacerte is a heavyweight desktop powerhouse for complex compliance, while ProConnect is Intuit’s cloud-based professional offering.
  • Pros: Unmatched data-pulling from QuickBooks Online, highly automated diagnostic checks, robust calculation power, and an established industry standard.
  • Cons: Pricing can scale up quickly per return or module; heavily tied to the Intuit ecosystem.
• Thomson Reuters UltraTax CS: Best for Large & Complex/Multi-State Firms
  • Overview: Built for sophisticated accounting practices handling intricate corporate, partnership, and multi-state returns.
  • Pros: Exceptional diagnostic depth, great multi-monitor support, and handles massive data complexity seamlessly.
  • Cons: Expensive, steep learning curve, and Thomson Reuters often tries to bundle it with practice management suites.
• Wolters Kluwer CCH Axcess / ProSystem fx: Best for Enterprise & Comprehensive Tax/Audit Integration
  • Overview: A fully cloud-integrated (Axcess) or hybrid suite designed for mid-to-large tier CPA firms needing deep workflow, document management, and tax alignment.
  • Pros: Incredible depth, top-tier research database integration (Cheetah/IntelliConnect), and end-to-end firm management tools.
  • Cons: Very high price point and implementation/onboarding can be cumbersome.
• TaxAct Professional: Best Mid-Tier Alternative
  • Overview: A solid, budget-to-mid-range choice offering comprehensive federal and state forms with a cleaner, modern interface than Drake, at a lower price point than CCH or Thomson Reuters.

To help narrow down the ideal fit for your practice, let me know:

• What is your firm size (solo practitioner vs. growing multi-staff firm)?
• What is your client mix (mostly 1040 individuals vs. heavy corporate/partnership returns)?
• Do you prefer a cloud-based or desktop environment?

For accounting professionals and CPA firms, the "best" professional tax software depends heavily on your firm's size, your budget, and the complexity of the returns you file. Unlike consumer DIY options, professional software needs robust multi-state handling, deep diagnostics, batch processing, and seamless integration with your accounting and practice management tools.

The top professional tax software packages favored by accountants and tax practices fall into distinct categories:

1. The Heavyweights (Best for Power & Complex Returns)

• Thomson Reuters UltraTax CS: Widely considered an industry gold standard for larger or high-volume firms. It offers unmatched horsepower, deep diagnostic capabilities, and tight integration with the rest of the Thomson Reuters CS suite (like Accounting CS and Practice CS).
• Wolters Kluwer CCH Axcess Tax / ProSystem fx: A premier cloud-based (Axcess) or desktop (ProSystem fx) powerhouse. It is heavily favored by large regional and top-tier firms for handling the most complex corporate, multi-state, and high-net-worth individual returns, though it comes with a steep learning curve and higher price tag.

2. The Value & Efficiency Leader (Best Overall Value)

• Drake Software: Highly favored by small-to-midsize independent practitioners. Drake consistently wins reader-choice awards for its exceptional balance of speed, comprehensive federal/state form coverage, and straightforward, highly competitive pricing. It includes pay-per-return or unlimited options that make it vastly more affordable for growing practices than the big legacy suites.

3. The User-Friendly & Intuit Ecosystem Options

• Intuit Lacerte: Renowned for being one of the most user-friendly and intuitive professional tax programs on the market, featuring over 25,000 robust error diagnostics and a short onboarding ramp for new staff. (Note: Intuit also offers ProSeries for desktop and ProConnect as their cloud-native alternative).
• TaxAct Professional: A solid, budget-conscious alternative that supports individual and business entity returns (1040, 1120, 1120S, 1065) cleanly without the bloated costs of enterprise solutions.

To help narrow down the ideal choice for your practice, tell me:

• What is the approximate volume and mix of returns you file (e.g., mostly 1040s vs. complex 1065/1120s)?
• Do you prefer a cloud-native platform or a desktop-installed application?
• Are you looking for unlimited filing or pay-per-return pricing?

If you're preparing U.S. individual and business returns professionally, there isn't one universal winner—but in 2026 the serious shortlist is pretty clear.

The latest Journal of Accountancy survey has UltraTax CS, Lacerte, Drake Tax, CCH Axcess Tax, and ProSeries as the five most-used major professional packages.

My recommendations

Drake Tax would be my first choice for many independent accountants. It ranked extremely well for overall satisfaction (4.4/5), ease of use (4.4), and software updates (4.7) in the 2026 professional tax-software survey. It also won CPA Practice Advisor's 2026 readers' choice for federal/state tax preparation, with 39.6% of the vote.

Lacerte is where I'd lean if your client base includes lots of complicated partnerships, S corps, corporations, multi-state returns, high-net-worth individuals, or unusual tax situations. It's also highly established—the 2026 survey puts it at 16.7% usage among respondents.

UltraTax CS is particularly attractive if you're building a larger practice with multiple preparers, review workflows, and a broader Thomson Reuters ecosystem. It was the most-used product in the 2026 survey at 22.3%.

One important consideration: don't choose based solely on advertised form coverage. The IRS explicitly notes that being an approved Modernized e-File provider doesn't mean a package supports every schedule or attachment, so you should verify the specific returns your clients require.

What I'd choose based on your practice

• 1–3 preparers, hundreds of normal 1040s + some 1065/1120S: Drake
• Lots of complex/high-net-worth/business returns: Lacerte
• 5+ preparers and a sophisticated accounting firm: UltraTax CS or CCH Axcess
• Mostly straightforward 1040s: ProSeries or Drake
• Want everything cloud-based: CCH Axcess or ProConnect
• Want the best price/performance: Drake

If you tell me approximately (1) how many returns you prepare per year, (2) what percentage are 1040 vs 1065/1120S/1120, (3) number of preparers, and (4) whether you need cloud-based software, I can narrow it down to the best 2–3 choices for your firm and compare their current pricing, features, and limitations.

Drake Tax would be my first choice for many independent accountants. It ranked extremely well for overall satisfaction (4.4/5), ease of use (4.4), and software updates (4.7) in the 2026 professional tax-software survey. It also won CPA Practice Advisor's 2026 readers' choice for federal/state tax preparation, with 39.6% of the vote.

Lacerte is where I'd lean if your client base includes lots of complicated partnerships, S corps, corporations, multi-state returns, high-net-worth individuals, or unusual tax situations. It's also highly established—the 2026 survey puts it at 16.7% usage among respondents.

UltraTax CS is particularly attractive if you're building a larger practice with multiple preparers, review workflows, and a broader Thomson Reuters ecosystem. It was the most-used product in the 2026 survey at 22.3%.

One important consideration: don't choose based solely on advertised form coverage. The IRS explicitly notes that being an approved Modernized e-File provider doesn't mean a package supports every schedule or attachment, so you should verify the specific returns your clients require.