1120-SN: S Corporation return with Schedule A (2025)
Nebraska · Nebraska DOR · Used for tax years 2025
Form 1120-SN is the 2025 Nebraska S Corporation Income Tax Return. It reports Nebraska income, applicable pass-through entity tax, withholding for nonresident individual shareholders, credits, payments, and any amount due or refund. Schedule A reports adjustments that increase or
What you'll need
- Federal return and schedules: Paper filers must attach a copy of the federal return and supporting schedules. Federal Form 1120S and Schedule K also supply amounts used on the Nebraska return and Schedule A.
- Business information: Have the corporation’s legal name, mailing address, federal and Nebraska ID numbers, business classification code, principal Nebraska business activity, and date business began in Nebraska.
- Shareholder information: Gather names, tax ID numbers, and ownership percentages for the shareholder schedules you complete. Schedule II also asks for addresses and Nebraska residency information.
- Attachments for amounts claimed: The form calls for a premium tax credit schedule, Form 3800N for line 9, Form 1099-NEC for line 25, and Form PTC for line 26, as applicable.
- PTET credits received: Attach Schedules K-1N for credits received from an electing partnership. Attach an additional schedule if credits came from more than one partnership.
- Credit certificate numbers: If claiming the related credits, have the certificate numbers from Forms ETC-A, SR-3604, and CCTC-A.
How to file
The form encourages all filers to e-file the return, including Schedules K-1N.
To file by mail, send the return and payment to:
Nebraska Department of Revenue
PO Box 94818
Lincoln, NE 68509-4818
Paper filers must attach a copy of the federal return and supporting schedules.
Complete both pages of Form 1120-SN and the applicable schedules. Transfer Schedule A, line 12, to the return’s line 2, and Schedule A, line 23, to the return’s line 3. An officer must sign and date the return.
If paying electronically, check the electronic-payment box on line 29.
Common mistakes
- Completing lines that must be skipped after a loss: If line 5 shows a loss, do not complete lines 6 through 17, 19, or 20, or Schedule II columns (E), (F), and (G).
- Using Schedule PTET when it does not apply: Use it only if the S corporation elected to be subject to income tax or is distributing PTET credits it received.
- Including distributed PTET credits on line 27: The amount distributed to shareholders and shown on line 27e must not be included in line 27.
- Missing a paper-return attachment: Paper filers must attach the federal return and supporting schedules.
- Entering an incorrectly formatted refund account number: Omit hyphens, spaces, and special symbols. Enter the number from left to right and leave unused boxes blank.
Questions people ask
What is Schedule A used for?
Schedule A reports adjustments that increase or decrease ordinary business income. Use Federal Schedule K amounts for Schedule A lines 1 through 8 and 10, and lines 14 through 22.
Which schedule addresses income from inside and outside Nebraska?
Schedule I is the apportionment schedule for an S corporation with income from sources both within and outside Nebraska. Its line 3 carries to Form 1120-SN, line 5.
How is the 2025 electing pass-through entity tax calculated?
If box 5 is checked, line 6 is line 5 multiplied by .0520. Line 17 subtracts total nonrefundable credits from that tax. If the credits exceed the tax, enter zero on line 17. If line 5 shows a loss, skip these lines as directed on the form.
Can an overpayment be applied to next year or refunded electronically?
Line 33 lets you apply part or all of the overpayment to 2026 estimated income tax. Line 34 shows the remaining refund. To receive it electronically, complete lines 35a through 35c with the routing number, account type, and account number. Check line 35d if the refund will go to a bank account outside the United States.