My refund is not reflected in the estimated tax payments for 2026

[DoninGA]

Did you apply your 2024 tax refund to the 2025 taxes?  If so -

To enter, change or delete a refund from the prior year applied to this years taxes (Federal, State, Local) -

Click on Federal Taxes (Personal using Home and Business)
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Scroll down to Estimates and Other Taxes Paid
On Income Taxes Paid, click on the start or update button

On the next screen select the options under 2024 Refund Applied to 2025

The prior year federal tax refund amount applied is shown on Form 1040 Line 26

[drewfraser33]

My question related to applying the 2025 refund toward the 2026 estimates. Your answer (and the TurboTax software) lets me apply a 2024 refund to 2025 taxes. My own approach was to make the change on the 1040 itself, but that brought about no adjustment to the 2026 estimates. I finally resolved the problem by claiming the refund and leaving the estimates as is.

[DoninGA]

@drewfraser33 Sorry for the confusion.  This is what you were looking for -

To add, change or delete a current year federal tax refund to next year's taxes before you file your tax return -

Click on Federal Taxes (Personal using Home and Business)
Click on Other Tax Situations
Under Additional Tax Payments
On Apply Refund to Next Year, click on the start or update button

The amount applied to next years taxes will be shown on Form 1040 Line 36

[drewfraser33]

Yes, that works. However, altering the refund directly on the 1040 does not seem to work.