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Clear Form FORM OREGON TRANSIT SELF-EMPLOYMENT TAX APPORTIONMENT WORKSHEET TSE-AP Check one: TriMet

Clear Form FORM OREGON TRANSIT SELF-EMPLOYMENT TAX APPORTIONMENT WORKSHEET TSE-AP Check one: TriMet 2026

Clear Form FORM OREGON TRANSIT SELF-EMPLOYMENT TAX APPORTIONMENT WORKSHEET TSE-AP Check one: TriMet Preview on Page 1

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The document is an Oregon Transit Self-Employment Tax Apportionment Worksheet (Form TSE-AP) designed for individuals or partnerships to calculate their apportionment percentage of net earnings when business activities occur both within and outside a transit district. It outlines the necessary factors—property, payroll, and sales—that must be considered in determining the apportionment percentage, with specific instructions for completing the worksheet and two methods for calculation based on tax year. The document also provides taxpayer assistance information.

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Click ‘Get Form’ to open the Clear Form in the editor.
Begin by selecting the appropriate transit district by checking the box for TriMet. This is crucial for accurate apportionment.
Enter your Filer Name (Individual or Partnership) and SSN or FEIN in the designated fields at the top of the form.
Proceed to Schedule AP-1. Fill in the Total within the district for Property Factor, Payroll Factor, and Sales Factor as per your business records.
Calculate and enter your Apportionment percent using either Method 1 or Method 2 as instructed, ensuring accuracy in your calculations.
Finally, review all entries for completeness and accuracy before saving or exporting your completed form.

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We have answers to the most popular questions from our customers. If you can't find an answer to your question, please contact us.

What is the self-employment tax in Oregon Tri County Metro?

Taxes that provide operating revenue for TriMet are administered and collected by the Oregon Department of Revenue. Effective January 1, 2025, the tax rate increased to 0.8237% of the wages paid by an employer and the net earnings from self-employment for services performed within the TriMet District boundary.

Why do I pay Oregon transit tax?

Revenue from the Statewide Transit Tax will go into the Statewide Transportation Improvement Fund to finance investments and improvements in public transportation services, except for those involving light rail.

Who has to pay TriMet tax in Oregon?

The Oregon Department of Revenue administers tax programs for the Tri-County Metropolitan Transportation District (TriMet). Nearly every employer who pays wages for services performed in this district must pay transit payroll tax. The transit tax is imposed directly on the employer.

How much tax do I have to pay if self-employed?

Small-business owners, contractors, freelancers, gig workers, and others who make more than a $400 profit must pay self-employment tax. Self-employed workers are taxed at 15.3% of 92.35% of net profit. This 15.3% is a combination of Social Security (12.4%) and Medicare (2.9%) taxes, also known as FICA taxes.

How much is self-employment tax in Oregon?

The self-employment tax rate is 15.3%, which includes 12.4% for Social Security and 2.9% for Medicare. You can use IRS Schedule SE to help with this calculation. Remember, you can deduct half of your self-employment tax when calculating your adjusted gross income.

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Do I need to file an Oregon statewide transit individual STI tax return?

If your out-of-state employer doesnt withhold the tax from your wages, you must file Form OR-STI, Statewide Transit Individual Tax Return and pay the tax due by April 15, 2025. Dont file Form OR-STI if all of your wages are taxable to Oregon AND all of your employers withheld the full tax in Box 14 of your W-2.

Clear Form FORM OREGON TRANSIT SELF-EMPLOYMENT TAX APPORTIONMENT WORKSHEET TSE-AP Check one: TriMet 2026

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