84-105: Pass Through Entity Tax Return (2025)
Mississippi · Mississippi DOR · Used for tax years 2025
Form 84-105 is the 2025 Mississippi Pass-Through Entity Tax Return. It reports S corporation franchise tax and composite or electing pass-through entity income tax, along with credits, payments, and any balance due or overpayment. It also collects information about the entity, it
Who files this form
Form 84-105 is Mississippi’s 2025 Pass-Through Entity Tax Return. It has filing options for:
- S corporations filing federal Form 1120-S.
- Partnerships, LLCs, and LLPs filing federal Form 1065.
- Composite returns and electing pass-through entity returns.
The form includes franchise tax for S corporations and income tax for composite or electing pass-through entity returns. It does not state the full rules for determining who must file.
What you'll need
Have the following information ready:
- The entity’s legal name and DBA, address, FEIN, Mississippi Secretary of State ID, NAICS code, and tax-year beginning and ending dates.
- The total number of Mississippi K-1s, prior-year overpayments, estimated tax payments, and any payment with an extension.
- Names, FEINs, addresses, and entity types for Mississippi pass-through entities the business invested in during the tax year.
- Information about Q-Subs and disregarded entities, including whether they have Mississippi operations.
- Names, titles, SSNs, addresses, and ownership percentages of owners, officers, directors, or partners responsible for fiscal management.
Depending on the entries you complete, the form refers to:
- Form 84-110, line 18: taxable capital.
- Form 84-122, line 32 or 35: Mississippi net taxable income.
- Form 84-401, lines 1 and 3: franchise and income tax credits.
- Form 84-161, line 3D: credit for tax paid on an electing pass-through entity return. You must attach the K-1s received from those entities.
- Form 83-305, line 19, or Form 80-320, line 11: interest and penalty on underestimated income tax payments. The Form 80-320 reference is for composite partnerships only.
How to file
Complete the applicable return sections and schedules. The form provides an officer signature and title field, a date field, and paid-preparer fields.
Electronic filing: If you issue 100 or more K-1s, you must file this return electronically. The form does not provide electronic filing steps.
Mailing address printed on the form:
Department of Revenue
P.O. BOX 23191
Jackson, MS 39225-3191
Common mistakes
- Missing the electronic filing requirement: The return must be filed electronically if you issue 100 or more K-1s.
- Leaving out required K-1 attachments: When claiming the line 12 credit for tax paid on an electing pass-through entity return, attach the K-1s received from electing pass-through entities.
- Not rounding S corporation franchise tax entries: That section says to round to the nearest dollar.
- Omitting additional schedule pages: Attach additional copies of Form 84-105, page 4, if needed to list pass-through entity investments, Q-Subs, or disregarded entities.
Questions people ask
Can an overpayment be applied to next year?
Yes. Line 21 is for the portion of the line 20 overpayment credited to next year. Line 22 is the refund amount, calculated as line 20 minus line 21.
What information is required for a final return?
Check the Final Return box and enter the reason and effective date in Part I, item 1.
How do I identify an amended return?
Check the Amended Return box and select the reason in Part I, item 3: Mississippi Correction, Federal Correction, or Other.
Do I need to list Q-Subs and disregarded entities?
Yes. Part III asks you to list all qualified subchapter S subsidiaries and disregarded entities, including their names, FEINs, addresses, and whether they have Mississippi operations. Use additional page 4 schedules if needed.