The complete back office for tax pros

Professional Tax Software for Preparers

Sigma Tax Pro offers professional tax preparation software with bank products and best-in-class technical and tax prep support. Including software for forms 1040, 1120 and 1065, Sigma has everything you need to make your tax preparation business successful this season. Sigma Tax Pro offers massive discounts on its professional tax software through the use of bank products .

Tax Pro Support (866) 386-4769

E-file accepted

Johnson · 1040 · 99.4%

Refund advance funded

Garcia · +$1,500

5.0★★★★★Based on 312 verified reviews

Tax software packages

One platform, priced for the practice you run.

Every package includes bank products, live support, auto-updates, and free data conversion.

1040-TW

Cloud-based. Ideal for new and growing EROs.

$495/season

All federal and state business income tax returns
Convert your old files into your new software
Client Write-Up accounting package
Automatic software updates
Joint vs. Separate Report – compare filing statuses
Built-in Interview Wizard that simplifies data entry

Choose 1040-TW

1040-SR

High-volume offices that need speed.

$495/season

All federal and state business income tax returns
Convert your old files into your new software
Client Write-Up accounting package
Automatic software updates
Joint vs. Separate Report – compare filing statuses
Step-by-Step Interview Method or the Forms Method

Choose 1040-SR

1040-DR

Full business suite. Complex returns & high volume.

$895/season

Easy-to-use form-based input
Intuitive user-friendly interface
All federal and state forms supported
Automatic software updates
Seamless error correction
Customizable reports

Choose 1040-DR

2002

Serving independent tax professionals

5.0

Average rating across 312 verified reviews

99.4%

Returns accepted on first e-file attempt

$495

Starting price per season, every package

Why Sigma

Professional Philosophy compete with the big firms.

Core Focus

Sigma Tax Pro is dedicated to providing professional tax preparers with high grade, comprehensive solutions at the lowest prices available. Our mission is to enable tax preparers to maximize their revenue and increase their client satisfaction. We have a deep understanding of our clients’ needs and aim to provide an unparalleled overall experience.

Premium Service Promise

Constantly exceeding expectations with premium caliber service, Sigma Tax Pro provides hands-on customer support every step of the way. This unprecedented, customer-focused approach serves tax preparation businesses of every size, and distinguishes Sigma Tax Pro as the industry’s most dedicated source for professional tax software solutions.

Ongoing Commitment

Sigma Tax Pro fully understands the intense workload that tax professionals are under during tax season. During even the most stressful days, we have customer service agents standing by to take your calls. Our offices are open extended hours and on weekends during tax season. For any technical questions, one of Sigma’s Account Managers will call you back straightaway.

Free, no obligation

Find your fit in one phone call.

A real person — not a ticket queue — walks you through pricing, demos, and setup.

Lowest prices in professional tax software
Bank products built in — collect fees from refunds
Free data conversion from your current software
Extended hours + weekend support

Prefer to call? (866) 386-4769

Get your free demo

Takes 30 seconds. We’ll call within one business day.

In their words

Numbers that speak for themselves.

“

The support alone is worth it — they actually pick up the phone. Switched two seasons ago and never looked back.

Marcus D.

Independent ERO

“

We run four locations and managing everything through one platform has made tax season dramatically less painful.

Sandra K.

Multi-location office owner

“

Bank product integration is seamless. Our refund transfers have grown every year since we made the switch.

Raymond T.

Tax office owner

FAQ

Professional Tax Preparer Software FAQs

What Is The Best Tax Software For Professionals?–

Our tax preparation software packages are built to meet a range of needs, from high-volume client management with the 1040-SR to more complex cases with the 1040-DR. Each solution includes features such as seamless error correction, filing status comparisons, and advanced permission controls to help your office run smoothly throughout tax season.n

What Are The Benefits Of Tax Prep Software?+

How Does Tax Software Handle Updates And Changes?+

Are Your Tax Software Solutions Cloud Or Desktop-Based?+

Does Your Tax Software Work On Mac And PC?+

Can I Customize Tax Forms And Add My Firm's Branding?+

What Customer Support Options Are Available During Tax Season?+

Is Client Data Backed Up?+

Featured In

RECOGNIZED FOR GROWTH

Nine Consecutive Years on the Inc. 5000

Sigma Tax Pro has been named to the Inc. 5000 — Inc. magazine’s annual ranking of the fastest-growing private companies in America — every year from 2018 through 2026. Nine years running means tax professionals keep renewing, keep referring, and keep growing their practices with us season after season.

See Our INC. 5000 Profile