How to Choose Tax Software for 2027 Without Overpaying

It’s easy to compare professional tax software by looking at the advertised license price. The hard part is finding out what you’ll actually spend once you add state returns, e-file fees, users, bank products and staff time.

Before you commit to a system for 2027, ask these questions.

What does it really cost at your volume?

A low upfront fee can make sense for a firm preparing 40 returns. That same package may become expensive at 400 returns if every transmission carries a charge.

Add the software license, federal and state e-file fees, extra users, state modules, e-signature costs and any other recurring charges. Then calculate the total at your expected number of returns.

For example, a $500 license with a $5 charge on each of 300 returns costs $2,000 before add-ons. Compare that with a genuinely all-inclusive quote—not simply a larger price tag on the home page.

Build two total-cost scenarios rather than one. In the first, assume last year’s volume. In the second, assume the growth you realistically expect in 2027. A low-license, per-return system may win at 40 returns and lose badly at 400. Include all the required state modules and user licenses in both versions. Don’t compare a basic quote from one company with an everything-included quote from another.

Also ask whether renewals, integrations or access to prior-year data cost extra. Sometimes the most painful fee isn’t a transaction charge. It’s the cost of moving years of client records when you decide to change products.

Does it cover the returns you actually prepare?

Look at last season’s work. Do you need Form 1040 with Schedules C and E? Business returns? Multiple states? The new Schedule 1-A deductions and 2026 W-2 codes?

Don’t pay for forms you won’t use. But don’t buy a package that forces you to send profitable work elsewhere, either.

Do a form-coverage audit using actual return categories from the past season. You may not need partnership or corporation preparation, but if you do, make sure the package handles the states, e-filing and schedules you actually use. If you sell only individual-return services, don’t let the vendor upsell you on functions that won’t make your practice more productive.

Pay attention to the transition from the 2025 to 2026 forms as well. You need the software to handle new W-2 reporting codes and Schedule 1-A deductions correctly. A vendor promise that “we support new tax laws” is not as useful as seeing the calculations in a test return.

Will it work with your team?

Test user permissions, review workflows, client organizers, PDF output and e-signatures. If you use seasonal preparers, make sure you can add and remove users easily and control who sees each client’s data.

Security matters. Your software should support appropriate multi-factor authentication and protect taxpayer information as part of your firm’s WISP—not make you invent workarounds.

Imagine one reviewer checking work from three preparers. Can preparers submit a file without e-filing it? Can the reviewer record what needs to change, return it to the right employee and verify it was corrected? If the software makes that process awkward, the cost shows up in staff time and errors. A good workflow matters just as much as a fast interview screen.

Check what happens when a seasonal employee leaves. You should be able to remove their access without losing client history or the audit trail. Your firm’s security obligations don’t disappear because the vendor stores the data in the cloud.

What happens during the busiest week of the year?

A beautiful interface won’t help much if nobody answers the support line on April 14. Ask about live support hours, peak-season availability, downtime procedures and how corrections or rejected returns are handled.

Also ask whether client and depreciation data can be carried forward from your previous system. Data conversion can save significant time, but only if it’s accurate.

Ask how support works on the days you need it most. Is there a phone number, what are the filing-season support hours and how do they handle e-file outages? A small price difference is hard to celebrate when your staff can’t transmit returns the week before a deadline.

Conversion deserves a test too. Bring over properly de-identified cases with depreciation, carryovers or prior-year client details and compare them with the original results. A conversion that imports names but loses important tax history isn’t a successful conversion.

Test it before you buy

Use sample or properly de-identified prior-year scenarios: one simple return, one Schedule C and one more complex case. Compare the calculations, state output, e-file process and review experience.

The right software is the product your firm can use accurately, efficiently and confidently—not necessarily the cheapest one on the first screen.

Time the full process while you test: setup, intake, preparation, review, client signature and accepted e-file acknowledgment. Even ten unnecessary minutes per return become more than 60 hours across 400 returns. The best software choice is often the one that saves those hours and reduces mistakes, not the one with the most features on a sales page.

The takeaway: Compare total cost, real form coverage, security, workflow and support—not just the sticker price. The Tax Practice Toolkit 2026 helps you compare the software categories behind a practice. Ready to evaluate filing software? Explore Tax Pros 360 software packages and the free demo.

Official source: IRS — PTIN and professional tax resources, IRS — Written Information Security Plans.

For general education for tax professionals; reviewed October 23, 2026. Confirm current forms and guidance before relying on tax-law details.