Why this matters
If you made estimated tax payments during the year and forget to enter them, TurboTax calculates your bill as if you paid nothing, and you overpay by exactly that amount. Five minutes of data entry protects money you already sent.
What "done" looks like
- All federal estimated payments entered with the exact date and amount of each
- State and local estimated payments entered separately
- Any prior-year overpayment you applied forward is included
- The refund/owe number moved after entry, proof the payments registered
How to do it
- Pull your payment records from IRS Direct Pay confirmations, EFTPS history, or bank statements, don't trust memory.
- Open Deductions & Credits in TurboTax and find "Estimates and Other Income Taxes Paid."
- Enter each federal payment with its actual payment date, dates feed the underpayment-penalty math, not just the total.
- Enter state estimates in the same section; they flow to your state return.
- Add any prior-year refund applied to this year's estimates, commonly forgotten.
- Recheck the refund/owe number to confirm every payment landed.
Common mistakes
- Entering the quarter a payment was "for" instead of the date you actually paid it
- Forgetting the January payment because it happened in the new calendar year
- Missing state estimates entirely and overpaying the state
Real-world examples
- TurboTax's support documentation routes this under Deductions & Credits: "Estimates and Other Income Taxes Paid," with separate federal, state, and local screens.
- The IRS Online Account shows your full federal payment history, the cleanest way to reconcile what you actually sent before you type it in.
From a founder's point of view
Estimated payments are money already out the door, so entering them feels like admin, not savings. But the return only credits what you tell it about. Treating this step as reconciliation, bank records versus entries, is what separates a clean filing from an accidental donation.
Rule of thumb
Every estimated-payment confirmation in your bank statement should match a line in TurboTax. If the counts differ, you're not done.
