Oregon Estimated Tax Payments (2026)

Do you have to pay estimated taxes in Oregon?

Yes. If you're self-employed in Oregon and expect to owe $1,000 or more in Oregon income tax for 2026 after credits and withholding, you must make quarterly estimated payments to the Oregon Department of Revenue. This is separate from your federal payments. Oregon taxes income at graduated rates up to 9.9%.

When are Oregon estimated taxes due in 2026?

Oregon's 2026 quarterly payments are due April 15, June 15, September 15, and January 15, in four equal installments, on the same calendar as your federal payments.

• Q1, April 15, 2026

• Q2, June 15, 2026

• Q3, September 15, 2026

• Q4, January 15, 2027

How much should you set aside for Oregon estimated taxes?

Plan to set aside about 30% of your net self-employment profit to cover federal and Oregon taxes combined, then confirm the exact amount with the calculator above. On $50,000 of net self-employment profit, federal self-employment tax alone is about $7,065 (15.3% on 92.35% of your earnings). On top of that you'll owe federal income tax and Oregon income tax, where the 8.75% rate starts at just $11,400 of taxable income. Oregon does let you subtract up to $8,750 of the federal income tax you pay.

How do you avoid an Oregon underpayment penalty?

To avoid an Oregon underpayment penalty, pay the smaller of 90% of your 2026 Oregon tax or 100% of your 2025 tax, in four on-time installments. Paying the full amount late doesn't help; each installment has to be on time. You can estimate a federal underpayment penalty here.

What deductions lower your Oregon estimated taxes?

Because estimated taxes are based on your net profit, every business write-off you claim lowers what you owe each quarter. Common deductions for 1099 workers, reported on Schedule C, include the home-office deduction, car mileage, phone and internet, software, and supplies. Like the IRS, Oregon lets you deduct half of your self-employment tax. The federal Qualified Business Income (QBI) deduction can remove up to 20% of your qualified business income from your federal taxes, but Oregon doesn’t allow it, so it doesn’t lower your Oregon tax.

Keeper's 1099 tax calculator estimates your bill after deductions, and our write-off guides list the deductions for your line of work.

Do self-employed people in Oregon owe local or other taxes too?

Often yes. If you do business in the Portland-area TriMet district, you owe a transit tax of 0.8237% of your net self-employment earnings (0.8% in the Lane Transit District around Eugene and Springfield), filed with the Oregon Department of Revenue. Portland-area residents may also owe the Metro Supportive Housing Services tax (1%) and the Multnomah County Preschool for All tax (1.5% to 3%) on income over about $125,000 ($200,000 married filing jointly).

Note: Figures are current for the 2026 tax year and are for planning, not tax advice. Confirm the details with the Oregon Department of Revenue before you file.

How to file quarterly taxes in Oregon

Filing quarterly in Oregon means two separate payments each period: one to the IRS for federal tax, and one to the Oregon Department of Revenue for your state taxes. Here’s how to do it.

1. Confirm you need to pay. You owe estimated payments when tax isn’t withheld from enough of your income — 1099 or freelance work, investment income, or other untaxed income. Federal and Oregon run separate tests: the state generally requires estimated payments if you expect to owe $1,000 or more in Oregon tax after withholding and credits, subject to its safe-harbor rules.
2. Calculate your federal estimate. Use the Form 1040-ES worksheet (or tax software). Estimate your full-year income, add your federal income tax and self-employment tax, subtract anything already withheld from a paycheck, and split the rest across the year. The estimate at the top of this page gives you a starting number.
3. Calculate your Oregon estimate separately. Work out your Oregon amount on its own using Form OR-40-V. Don’t just send part of your federal payment to the state — the Oregon calculation is separate, based on your Oregon income tax, credits, and any Oregon withholding.
4. Pay the IRS. Pay through IRS Direct Pay (or EFTPS) and choose the estimated tax / Form 1040-ES option. Select tax year 2026 and save the confirmation number. This money counts only toward your federal taxes.
5. Pay Oregon separately. Make a second payment to Revenue Online and select the Form OR-40-V estimated payment for 2026. Save that confirmation too. This money counts only toward your Oregon taxes.
6. Repeat on each deadline. For 2026, federal estimated payments are due April 15, 2026, June 15, 2026, September 15, 2026, and January 15, 2027. Oregon uses those same four dates.

Steps reflect 2026 rules and are for planning, not tax advice.