1 Return & taxpayer details

The IRS December 2025 revision is a continuous-use form. The selected year is the return being amended, not the revision year. You must already have filed that year’s original return. Preparing this PDF does not file the amendment.

2 Current mailing address

3 Original & corrected amounts

Use original amounts as previously adjusted by the IRS, if applicable. Enter a corrected amount only when it changes; blank means unchanged. Column B is calculated as corrected minus original. Use a minus sign for an allowed negative AGI.

Enter tax and allowed deductions / credits from the required completed corrected main return and applicable worksheets. This builder does not calculate income tax from AGI alone. Attach Schedule 1-A for a Line 4b deduction.

4 Payments & refund reconciliation

Include the prior overpayment under the IRS rules whether or not it has already been received. A negative Line 19 remains part of the amount-owed calculation.

5 Explain the changes · Part II

Use up to 1,400 characters that fit on the original explanation area. Attach additional supporting statements separately when needed.

6 Signing & contact details

Taxpayer signature

A signature and date remain blank unless you draw and apply them. Review the original return certification. For a joint return, both spouses must sign before filing.

Print and sign later, or draw and apply your own signature.

Spouse signature

A signature and date remain blank unless you draw and apply them. Review the original return certification. For a joint return, both spouses must sign before filing.

Print and sign later, or draw and apply your own signature.

Review & download

Both complete original pages are included. Additional returns, schedules and statements are separate. Print and sign any remaining blank signature lines before filing. Downloading this PDF does not file the amendment or pay tax.

By clicking Continue to checkout, you confirm that you reviewed both pages against your records.