RI-1120S: Subchapter S Business Corporation Tax Return (2025)
Rhode Island · RI Division of Taxation · Used for tax years 2025
Form RI-1120S is Rhode Island’s 2025 Subchapter S Business Corporation Tax Return. It reports federal taxable income, Rhode Island adjustments and apportionment, taxes and pass-through withholding, payments, and any balance due or overpayment.
Who files this form
RI-1120S is Rhode Island’s Subchapter S Business Corporation Tax Return for tax year 2025. The provided form does not state detailed requirements for which corporations must file.
When it's due
- 2025 return: Due on or before the 15th day of the 3rd month following the close of the taxable year.
- Federal changes to prior-year income: The 2025 form says these changes must be reported to the Tax Administrator within 60 days after a final determination. If a federal change has not yet been reported, complete an amended RI-1120S immediately and submit it with any payment due.
What you'll need
- Complete federal return: Attach all pages and schedules, including all K-1s.
- Business information: Have the federal employer identification number, Rhode Island Secretary of State ID number, NAICS code, and taxable-year dates available.
- Financial and payment records: Gather the amounts needed for federal taxable income, gross receipts, assets, additions, deductions, estimated tax payments, and withholding.
- Apportionment information: Schedule I asks for Rhode Island and everywhere amounts for property, receipts, and salaries.
- Additional forms, when applicable: Attach RI-107 for the Tax Incentives for Employers modification. Complete RI Schedule CR-PT if credits pass through to members. The return also uses amounts from RI Schedule PTW, RI Schedule PTE, and 2025 RI Schedule HR1 - Entity when applicable.
- Payment voucher: Use Form BUS-V for the total due with the return.
How to file
Complete the return and applicable schedules, attach the complete federal return including all K-1s, and have an authorized officer sign and date the return.
Mail to:
RI Division of Taxation
One Capitol Hill
Providence, RI 02908
If an amount is due with the return, use Form BUS-V.
Common mistakes
- Leaving out federal attachments: The form requires a complete copy of all federal return pages and schedules, including all K-1s.
- Skipping the pass-through credit schedule: Complete RI Schedule CR-PT if the entity has credits passing through to its members.
- Not reporting federal income changes: Schedule F directs you to file an amended RI-1120S immediately for an unreported federal change and report changes within 60 days after final determination.
- Using too few decimal places: Schedule I directs you to calculate the Rhode Island property, receipts, and salary ratios to six decimal places.
Questions people ask
What minimum tax is printed on the 2025 return?
Schedule A, line 7a, lists a Rhode Island minimum tax of $400.00.
Do I need to attach the federal return?
Yes. Attach a complete copy of all pages and schedules of the federal return, including all K-1s.
Can an overpayment go toward next year’s estimated tax?
Yes. Line 15 lets you enter the amount of overpayment to credit to 2026 estimated tax. Line 16 shows the amount to be refunded after subtracting that credit from the overpayment.
What if the entity has credits that pass through to its members?
Complete RI Schedule CR-PT, Other RI Credits for RI-1065 and RI-1120S filers.