I'm researching your self-employed service... does the $89.99 price include both quarterly estimated tax filings and the annual filing?

[Critter]

All the programs have the ability to complete estimated tax forms for the next tax year.

[SteamTrain]

....it will provide the next years (2018 now) quarterly estimated tax forms to mail in with a payment, but you don't/can't actually do those estimated payments thru the software.  The actual payments must be done by you mailing them in...or going to the IRS payment website.  The software just helps you figure out what those payments should be.  The quarterly estimates are just payments, there is no tax return data filed at the same time.

If there are any taxes-due for your final 2017 tax return, that people are preparing now.....those payments can be arranged as a direct debit in the software, but the IRS does the actual debit After you submit your final 2017 tax return....or you can tell the software you will pay separately by mail too.

[Opus 17 · Accepted solution]

Turbotax can prepare the form (but you can do that yourself) but Turbotax does not help you calculate the estimate.  Turbotax is exclusively tax prep -- you can use Turbotax 2017 to prepare your 2017 taxes and to print vouchers for 2018 estimated payments, but it doesn't track your income and expenses to help you calculate those payments.

You may want to look at the Quickbooks Self-employment bundle.  It consists of a limited version of Quickbooks (for one business only) and a limited version of Turbotax SE version (one tax return only) and is a monthly subscription.  You use Quickbooks to track your business income and expenses over the year, and it calculates your estimated payments. At the end of the year your PNL flows into Turbotax for your tax return.

https://quickbooks.intuit.com/self-employed/

If you have more than one small business or need to prepare more than one tax return, you may be better off buying the fully functional Quickbooks and Turbotax Home & Business separately.