How do I file for an extension of time?
Requests for an extension of time to file a return must be made in writing to the Portland Income Tax Office. An extension is not a request for additional time to pay tax due.

The Administrator may extend the filing date of the return for up to six months or for the same period granted by a federal extension. Submit a copy of the Federal extension form with payment adequate to cover the unpaid portion of your annual liability to the Portland City Income Tax Office on or before the due date of the return. If no tax is owed or you will be claiming a refund, do not file an extension. Extensions filed without a tentative tax payment will not be accepted or processed by the Income Tax Office.

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1. How does Portland spend funds generated through the Income Tax?
2. What is the tax rate for the City of Portland Income Tax?
3. Why do I have to make quarterly estimated income tax payments?
4. How do I file for an extension of time?
5. What are the penalty and interest charges if I pay my income tax late?
6. Can I e-file my Portland income tax return?
7. Who needs to file a City of Portland Individual Income Tax Return (P-1040)
8. I lived in the City of Portland for part of the year. How do I file?
9. I lived in the City of Portland for part of the year, and I worked in the City all of the year. How do I file?
10. What is taxable income?
11. What is nontaxable income?
12. What deductions are allowable when filing the City of Portland Individual Income Tax Return (P-1040)
13. Who must file a City of Portland Corporate Income Tax Return (P-1040)
14. Who must file a City of Portland Partnership Income Tax Return (P-1065)?
15. Can a partnership pay the City Income Tax for the partners?
16. Who must withhold Portland City Income Tax?
17. How do I file and pay my withholding?
18. When are my withholding payments due?
19. I do not have withholding for this quarter. What do I do?
20. Who has to file a City of Portland Fiduciary Income Tax return (P-1041)?
21. Helpful Hints