Professional Tax Software

Sigma 1040-TW is Sigma Tax Pro’s most customizable service package.



Sigma 1040-TW is Sigma Tax Pro’s most customizable service package. Sigma 1040-TW includes everything you need to make your tax preparation business successful this tax season. Our 1040-TW product comes in desktop and web based versions, if you need to file business returns such as Forms 1120 or 1065 you will need the desktop version. Sigma clients have their own dedicated account manager who will work with them throughout tax season to assist with tax preparation and software support. Sigma also offers a full range of bank products that can be used to ensure a best in class customer experience. Clients can receive their refunds quicker and easier choosing from direct deposit, in office check printing, as well as prepaid VISA/MasterCard options.

Sigma 1040-TW service package also includes a premium software solution. With formats such as ProFiling and Power, you pick the Sigma-TW setup that suits your business needs. Whether you specialize in the simplest 1040EZ returns or focus on the more complex 1120 corporate returns Sigma 1040-TW has the solution for you. Please click the demo links above to try either our desktop or web based versions.

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1040-TW Service Package


Dedicated account manager to support you and your staff throughout tax season

Tax preparation and software support when you need it

Bank Products include direct deposit, debit cards and in office check printing for preparers that qualify.

software solution

1040-TW Software


What if mode: Test any number of hypothetical tax scenarios for your clients

Create a return without SSN and then add it once you have it

Diagnostics system also warns of possible inconsistencies

Calculations are made instantly with every entry

Conversion software for most tax packages

1040-TW Web Based


No installation or update required. The program resides on a secure server and is updated automatically

Client data is safe and secure on our IRS-compliant system

Prepare returns, e-file, print returns and print checks from anywhere

Built-in Interview Wizard that simplifies data entry

Spanish forms available

Conversion software for most tax packages

Why SIGMA 1040-DR?

As Flexible And Versatile As You Are!

Sigma 1040-TW allows you to prepare your clients’ returns using keyboard shortcuts. No need to keep reaching for that mouse! If you prefer the mouse then handy toolbar buttons are available with right-click pop-up menus.

Where’s That Form?

Sigma 1040-TW’s QuickLink feature makes your life easy, you can quickly link to supporting forms or open them directly from the “Find a Form” screen.


During a busy tax season you may need to work on more than one return at a time. Sigma 1040-TW allows you to open multiple instances of the software allowing you to multitask with ease.

No SSN, No Problem!

Perhaps you need to start working on a return but don’t have the SSN or ITIN number yet. Sigma 1040-TW will allow you to create a return without this and then add the information once you have it.

What About Quality Control?

There are three ways to check your returns for errors with Sigma 1040-TW. You can use either the Keystroke-by-keystroke, Entry-by-entry or the Entire return method. It’s almost impossible to make a mistake with this triple threat of error prevention. The comprehensive diagnostics system also warns of possible inconsistencies in tax information.

Real-time Calculations!

Calculations are made instantly with every entry, no buttons to push, no hourglass on the screen while it calculates. The data flows smoothly from supporting forms to primary forms making your busy tax season just a little less stressful.

Can I Convert?

Of course! Sigma 1040-TW offers conversion software for most tax packages. Call today to check if your old software is supported.

How Do I Get Started?

It’s simple, if you have more questions please call our toll free number to set up an appointment with one of our account managers today. If you are ready to purchase please click the purchase now button. You will then receive a link to download the software and an account manager will call you to get the required information to setup your account. If you would simply like more information then fill out the request information form to keep up to date on all new developments with Sigma 1040-TW!

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Customer Support

Sigma Tax Pro guarantees prompt and professional responses
to our clients

Tax Prep Support

If you have questions on tax guidelines we can provide
the answers you need

Audit Assistance

Audit Assistance will work with your client to get the refund they
are due

Resellers Program

Increase your revenue and leverage your connections within
the industry

Get Started Today

Experience our professional tax software.