How do I pay estimated taxes for 2019 as self-employed if my income fluctuates throughout the year? Not sure if I should do quarterly or annualized income method. Help?

The annualized income method applies when you are calculating an underpayment penalty for the previous year.

TurboTax will calculate estimate payments for you based on your entries in your return for 2018 and you can adjust the estimates. 

To calculate your estimated taxes for 2019, please follow these steps:

1. Click Federal > Other Tax Situations
2. In the Other Tax Forms section, click on Start/Revisit next to Form W-4 and Estimated Taxes. 
3. On the Adjust How Much Tax You Pay screen, click the No box.  [This applies to withholding from your paycheck.]
4. On the screen, Estimated Taxes for 2019, click the Prepare Now box.
5. On the Review Your Estimates for 2019 screen, TurboTax will display estimates it calculated based on your 2018 information and ask Do you want to adjust your income or deductions?  Click the Yes box.
6. Continue through the interview, entering information for 2019. 
   

Hello. I filed my business taxes, logged into TT but the tab I see is "Federal Taxes" and "Federal Review." When I click on either of these I do not see "Other Tax Situations."

What kind of return are your preparing?  What version of TT are you using?

Business partnership LLC.

I used the CD version of business TT. I learned yesterday the CD prepared tax return doesn't port over to the online TT.