Side by side

Sigma Tax Pro vs TTS Tax Software

Both stand on small business tax software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Sigma Tax Pro

Paid Web

Sigma Tax Pro offers tools for individual and business tax preparation, with desktop and web options for 1040-TW and 1040-SR. Preparers handling Forms 1120 or 1065 should account for the desktop requirement when selecting either product.

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TTS Tax Software

Paid Web

TTS Tax Software combines broad return coverage, e-filing, workflow tools, and firm administration in a web service. Its listed plans are paid, with monthly and one-time options.

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The facts

	Sigma Tax Pro	TTS Tax Software
Free plan	No	No
Open source	Not published	Not published
Runs on	Web	Web
Lowest paid plan	Sigma 1040-SR: $495, paid once	EXTENDED PLAN: $297 a month
Plans published	3	3
Maker	Not published	Not published
Website	sigmataxpro.com	ttstaxsoftware.com
On small business tax software	#20 of 30	#24 of 30

Sigma Tax Pro: what it does well

Covers individual 1040 and business 1120 and 1065 forms.
Federal and state e-filing are available.
1040-TW includes diagnostics and instant calculations.
Mobile app supports document uploads, messages, and remote signatures.
Clients receive a dedicated account manager during tax season.

What to know first

No free plan.
Forms 1120 and 1065 require the desktop version of 1040-TW or 1040-SR.
1040-DR is listed at $895, paid once.
Some listed refund options use prepaid cards.

TTS Tax Software: what it does well

Electronic filing with IRS and all states
Over 2,000 forms, schedules, and worksheets
Unlimited listed return types
Remote signing without a sign pad
Unlimited users and multiple offices

What to know first

No stated free plan
Plans start from 349 USD per month
Security in transmission or storage is not guaranteed
Web platform only

Alternatives to Sigma Tax Pro Alternatives to TTS Tax Software The whole list