To add estimated taxes paid 2016 (before filing):

1. Sign In or Open TurboTax

2. Select "Take me to my return" (Online)

3. Select "My Account" on top right of the screen (Online)

4. Click on "Tools" (Online)

5. Go to "Topics Search" (Online) or "Search Topics" in the top center of the screen (Desktop)

6. Type "estimated tax paid" (Online) or "Estimated Tax Payments" (Desktop) and press "enter" (Online) or "ok' (Desktop) to add federal and state estimate tax payments.

If you already filed your return, you will need to amend your return to make changes.

Wait for your return to be processed by the IRS before amending.

If your return was rejected by the IRS you can add/edit your return before resubmitting:

See FAQ below to Amend 2016 Online:

https://ttlc.intuit.com/replies/5567856

See FAQ below to Amend 2016 in Desktop:

https://ttlc.intuit.com/replies/5114143