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Oregon Income Tax Forms

Oregon Income Tax Forms

Individual Income Tax

Form 40 Individual Income Tax Return Resident 

Form 40P Individual Income Tax Return Part Year Resident

Form 40N Individual Income Tax Return Nonresident

Corporate Income Tax

Form 20 Oregon Corporation Excise Tax Return 

Form 20-I Oregon Corporation Income Tax Return 

Form 20-S Oregon S Corporation Tax Return

Oregon Income Tax Forms: Understanding the Reporting Requirements and the Filing Process

The Oregon income tax laws mandate that all residents who receive income in the form of wages, salaries, tips, and other forms of compensation must file an Oregon state tax return. The amount of income earned determines the tax bracket, which dictates the rate of taxation. Oregon’s tax code is relatively straightforward, and taxpayers have various forms at their disposal to report their income and deductions accurately. This article provides a comprehensive overview of Oregon Income Tax Forms, including the latest updates, reporting requirements, calculation methods, and filing guidelines.

Overview of Oregon Income Tax Forms

Oregon residents can file their income taxes electronically or by mail. The state’s tax department provides various tax forms, calculators, and schedules to assist taxpayers in preparing and filing their tax returns. Here are the primary Oregon income tax forms:

Form OR-40: Oregon Individual income tax return – This tax form is the primary document used by most residents to report their income, enter deductions or credits, and calculate their tax liability. This form includes Schedule OR-ASC, which details some of the deductions used when calculating adjusted gross income.

Form OR-40-N: Oregon nonresident income tax return – This form applies to nonresidents, part-year residents, and people who do not live in Oregon but earn income within the state. Nonresidents must report all income earned in Oregon and use Schedule OR-ASC-N to claim deductions. Nonresidents can also exclude some of their income or claim tax credits if they reside outside the state.

Form OR-40-P: Oregon part-year resident income tax return – This tax form applies to individuals who moved to or left Oregon during the tax year and earned income within and outside the state. Like nonresident taxpayers, Part-year residents must use Schedule OR-ASC-P to calculate their adjusted gross income and claim applicable tax deductions.

Form OR-40-V: Oregon Individual income tax payment voucher – This form is for people who make estimated tax payments or want to pay their income tax due separately from their tax return. Individuals must use the tax rates and calculation methods from the current year to determine how much they must pay in estimated taxes.

Form OR-40-EXT: Oregon extension, tax form – If taxpayers need more time to file their tax returns, they can request a six-month extension using Form OR-40-EXT. However, it is imperative to note that the extension only applies to filing the return, not paying any taxes due. Individuals must still pay their estimated tax liability by the original due date to avoid late payment penalties and interest charges.


Form OR-10, Form OR-17, Form OR-W-4, Schedule OR-WFHDC, and Schedule OR-529.

Reporting Requirements for Oregon Income Tax Forms

Residents must report all income acquired within Oregon and outside the state. This includes earned income, investment income, and business income. The following are some of the types of income that must be reported in the Oregon income tax returns:

1. Wages and salaries

2. Tips

3. Business and professional income

4. Rental and investment income

5. Alimony

6. Unemployment compensation

7. Retirement income

8. Capital gains and losses

9. Income from foreign countries

10. Gambling winnings

11. Federal benefits like social security and railroad retirement.

12. Certain types of passive income.

13. Oregon lottery winnings

Oregon provides a comprehensive guide on the definition of taxable income in Publication OR-40-NP. Individuals can refer to this guide to check if their income sources are taxable in Oregon or exempted. In addition to taxable income, individuals must also report any tax-exempt income they receive, which includes:

1. Interest on state and municipal bonds

2. Federal tax refunds

3. Welfare benefits

4. Some types of scholarships and fellowships

5. Certain IRA and other retirement income

6. Workers’ compensation benefits

7. Veterans’ benefits

8. Non-profit earnings

9. Social security disability benefits.

Deductions and Credits

After calculating their income, taxpayers can also subtract their eligible deductions, which can reduce their tax liability. Here are some of the commonly used deductions in Oregon tax returns:

1. Standard deductions – Oregon taxpayers can use the same standard deductions as the federal government. The standard deduction amount varies based on the filing status and age of the taxpayer.

2. Itemized deductions – Individuals who decide to itemize their deductions must use Schedule OR-D to report them. Itemized deductions include mortgage interest, charitable donations, medical and dental expenses, taxes paid to other states or cities, and other qualifying expenses.

3. State income taxes – Oregon taxpayers can deduct their state income taxes paid in the current year from their taxable income.

4. Property Taxes – Individuals can deduct property taxes paid to Oregon counties or cities as itemizable deductions instead of as a part of the standard deduction.

5. Student Loan Interest – Individuals can deduct up to $2,500 from their eligible student loan interest payments for the tax year.

Oregon provides taxpayers with several tax credits that they can use to offset their tax liabilities. Here are some of the common tax credits available in Oregon:

1. Earned income credit – This credit applies to low-income taxpayers, and they may qualify if they meet specific criteria related to age, family size, and earned income.

2. Child and dependent care credit – This credit is available to individuals who pay for child care or care for a dependent adult who cannot care for themselves while the taxpayer is working.

3. Business energy tax credit – This credit can be used by business owners who invest in solar, wind, or geothermal energy systems.

4. Elderly and disabled credit – This credit is available to residents aged 62 or older or those with disabilities.

5. Adoption expense credit – This credit allows tax filers who have completed the legal adoption of a child to claim up to $13,500 per child for qualifying expenses.

Calculation of Tax Liability

After calculating eligible deductions and credits, individuals can use the Oregon tax rate chart to determine their tax liability. The Oregon tax rate varies depending on the level of income earned. The state has a range of rates, but in general, the more a taxpayer earns, the higher the tax rate. Here are the current rates for the 2021 tax year:

1. 4.75% for the first $3,700 of taxable income

2. 6.75% for taxable income between $3,701 and $8,600

3. 8% for taxable income between $8,601 and $125,000

4. 9% for taxable income above $125,001.

Filing Guidelines for Oregon Income Tax Forms

The Oregon tax return deadline follows the same pattern as the federal tax deadline: April 15. However, due to the COVID-19 pandemic, the state extended its due date to May 17, the same as the federal government. However, taxpayers who need more time can request an extension by using Form OR-40-EXT. They must pay their estimated tax liability by the original due date to avoid penalties and interest charges.

Oregon provides various options for filing an income tax return. Here are some of the most common methods:

1. Online filing – The Oregon Department of Revenue provides a free and secure online filing system for tax returns. Taxpayers can submit their tax returns and all necessary documents electronically.

2. Mailing paper returns – Individuals who prefer to file by mail must submit their returns and all necessary documents to the Oregon Department of Revenue, where they will be processed manually.

3. Paid tax preparers – Many tax preparation companies offer assistance with filing Oregon income taxes. However, it is important first to research a preparer’s credentials and reliability before choosing one.

4. Free Tax Help – Oregon has a free tax help service that assists low-income taxpayers, seniors, and disabled individuals with filing their taxes.


Filing Oregon income tax forms can be quite an intimidating task, but understanding the requirements and guidelines can make the process easier. Taxpayers should ensure that they report all taxable income, use the correct deductions, and employ eligible credits to reduce their tax liability. While the Oregon tax code may seem complex, the state provides various resources to help taxpayers navigate the system. By following the filing guidelines and employing the right tax forms, taxpayers can efficiently file their Oregon income tax returns.