I entered my estimated tax payments for 2018. Why didn't this lower my tax due?

[gringalaura]

When I entered my estimated taxes paid for 2018, it didn't change my taxes due.  Why not?  What is the point of paying estimated taxes if it doesn't lower the amount you pay in April?  Also, the IRS never sent me a form.  I totaled up the amounts from my checkbook records.  The checks I sent them were all cashed.

[fanfare]

of course you will get credit for that.
go back and recheck your entries in TurboTax, something went wrong.

[VolvoGirl]

They should be on 1040 line 17.  You can preview the 1040 or print the whole return <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/replies/3302322">https://ttlc.intuit.com/replies/3302322</a>

Where did you enter them?  Did you put the right date and year on each one?
You can type estimates paid in the search box at the top of your return and click Find and it will give you a link to Jump To it.

OR
To enter Federal or State Estimated Taxes Paid, including a state estimated payment made in January for the prior year, go to
Federal on left or at top.  Personal (Home & Business)
Deductions and Credits at top
Then scroll way down to Estimates and Other Taxes Paid
Estimated Taxes - click the Start or Update button

Estimates paid will be on Schedule 5 line 66 which goes to 1040 line 17.

[fanfare]

Always print a copy of your completed tax return for your records, and review it carefully before e-Filing.

You will need it if you are audited by the IRS, or to amend because a TurboTax update changes your return.
OR to verify your estimated tax payments are properly credited.