Schedule3-ET: Schedule3-ET (2025)

Wisconsin · Wisconsin DOR · Used for tax years 2025

Wisconsin Schedule 3-ET computes entity-level tax for 2025 and is included with Wisconsin Form 3. It reports income, deductions, entity-level adjustments, taxable income, and a credit for net tax paid to another state to determine the tax entered on Form 3.

What you'll need

Have these items ready to complete Schedule 3-ET:

  • The entity's name and identifying number.
  • Income and deduction amounts requested on lines 1 through 17, with amounts for residents, nonresidents, and entity-level adjustments.
  • Schedule ET-OS, line 22, if entering a credit for net tax paid to another state.
  • Wisconsin Form 3, which must include Schedule 3-ET.

How to file

Include Schedule 3-ET with Wisconsin Form 3. Enter the result from Schedule 3-ET, line 21, on Form 3, page 1.

The supplied form does not give a mailing address or e-filing instructions.

Common mistakes

  • Do not enter a negative tax on line 19. If taxable income on line 18 is less than zero, enter 0 on line 19.
  • If the credit on line 20 is larger than the tax on line 19, enter 0 on line 21.
  • Remember to enter line 21 on Form 3, page 1, and include Schedule 3-ET with Form 3.

Questions people ask

What is Schedule 3-ET used for?

The 2025 Schedule 3-ET computes entity-level tax and is included with Wisconsin Form 3.

How is taxable income calculated?

On line 18, subtract total deductions on line 17 from total income on line 12.

What tax rate does the schedule use?

Line 19 multiplies taxable income on line 18 by 7.9% (0.079). If line 18 is less than zero, enter 0 instead.

Where does the credit for tax paid to another state come from?

Enter the credit from Schedule ET-OS, line 22, on Schedule 3-ET, line 20.

How do I calculate column (e)?

Add columns (b), (c), and (d): residents, nonresidents, and entity-level adjustments.

Official sources

All versions of Schedule3-ET