Form3: Wisconsin Partnership Return (2024)

Wisconsin · Wisconsin DOR · Used for tax years 2024

Wisconsin Form 3 is the partnership return for 2024. It reports partners’ shares of income, losses, deductions, and credits, including adjustments between federal amounts and amounts under Wisconsin law. It also reports any partnership entity-level tax, payments, amount due, or r

When it's due

For tax year 2024, Form 3 states that the return is due on the 15th day of the third month following the close of the taxable year.

If you have an extension of time to file, enter the extended due date in item B.

What you'll need

Have the partnership’s name, address, FEIN, business activity code, state and year of formation, and partner counts ready. The form also asks for income, deductions, credits, tax payments, and Wisconsin and total company property, payroll, and sales amounts.

Depending on your situation, the form calls for these documents:

  • Schedule AR for an amended return.
  • Schedule DE if the partnership is the sole owner of any disregarded entities.
  • Schedule RT if you have related entity expenses and are required to file it.
  • Schedule RT-1, obtained from the related entity, for the subtraction on Part III, line 10.
  • Schedule 3-ET for the entity-level tax amount reported on Part I, line 1.
  • Schedule EC and/or BD if electing to claim the credits described in item L at the entity level.
  • Federal Form 8886 if you filed it with the IRS.
  • Form 8825 for net rental real estate income or loss, Form 4797 for net section 1231 gain or loss, and Form 4562 for the section 179 deduction.
  • Federal Schedule K-2 (Form 1065) if reporting items of international tax relevance.

Attach supporting schedules where the form requests them, including for certain other income, deductions, and Wisconsin additions and subtractions.

How to file

The supplied form is marked “Sample Form File Electronically.” It directs filers to “Filing Methods” under “When and Where to File” in the instructions.

The supplied text does not include an electronic filing procedure or a mailing address.

Common mistakes

  • Leaving out Schedule AR with an amended return. Item C says to include the Explanation of Amended Return.
  • Overlooking a separate Form PW-1. Item D notes that a separately filed Form PW-1 may also be required when filing Form 1CNP on behalf of nonresident partners.
  • Leaving out federal Form 8886. If you filed it with the IRS, the form says to include it with your Wisconsin return.
  • Missing the international tax attachment. If reporting items of international tax relevance, check the box on Schedule 3K, line 16, and attach federal Schedule K-2 (Form 1065).

Questions people ask

Can an overpayment be applied to next year’s estimated tax?

Yes. On the 2024 form, enter the amount of your overpayment you want credited to 2025 estimated tax on line 11. Line 12 is the remaining refund after subtracting line 11 from line 10.

Where do I indicate an election to pay tax at the entity level?

Check item I if the partnership is electing to pay tax at the entity level under section 71.21(6)(a), Wisconsin Statutes. Part I, line 1, takes the entity-level tax amount from Schedule 3-ET, line 21.

Can another person discuss this return with the department?

Yes. Select “Yes” in the Third Party Designee section and complete the designee’s name, phone number, and personal identification number (PIN).

What if the partnership is the sole owner of a disregarded entity?

Check item H and prepare and submit Schedule DE with the return.

Official sources

All versions of Form3