Oregon property taxes are billed by your county each October, split into three installments due November 15, February 15, and May 15, and calculated against a taxable value that by law cannot grow more than 3% a year. Two constitutional caps limit the rate anyone can charge you, early payment earns a discount of up to 3%, and several programs reduce or defer the bill for seniors, disabled homeowners, veterans, and owners of qualifying farm or forest land.
How Your Taxable Value Is Set
Your bill starts with your assessed value, which Oregon law defines as the lesser of two numbers: your property’s real market value or its maximum assessed value. Real market value is what an informed buyer would reasonably pay an informed seller in a cash transaction as of January 1 of the tax year.1Oregon State Legislature. Oregon Revised Statutes Chapter 308 – Section 308.205 Maximum assessed value is last year’s figure plus no more than 3%.
In a rising market, real market value climbs faster than that 3% cap allows, and the gap between the two widens. Your assessed value stays at the lower, capped figure. In a downturn, if real market value drops below the maximum assessed value, the lower market figure becomes your assessed value instead, so you’re never taxed on a number that exceeds what your property is actually worth.
A separate constitutional cap limits the rate itself. Combined operating taxes from all taxing districts can’t exceed $5 per $1,000 of real market value for school-related taxes and $10 per $1,000 for general government taxes (cities, counties, special districts).2Oregon Department of Revenue. A Brief History of Oregon Property Taxation Those ceilings apply only to operating levies. Voter-approved general obligation bonds for things like school construction or fire trucks sit outside the caps and can add to your bill even if the operating rate is already maxed out.
When Improvements Reset Your Taxable Value
The 3% annual growth cap has a significant exception: major changes to your property. New construction, substantial remodeling, subdivisions, and rezoning can all trigger what the assessor calls an “exception” that adds value to your maximum assessed value above the normal 3% bump. The threshold is $18,200 in added real market value in a single year, or $45,000 over five consecutive years. Routine maintenance and minor repairs that stay below those figures don’t trigger it.3Oregon Department of Revenue. Property Assessment and Taxation Starting after 2024, these thresholds are indexed annually to the Consumer Price Index.
Practically speaking, a new garage, a large addition, or a gut renovation will likely increase your maximum assessed value by more than 3% that year. The assessor estimates how much market value the improvement added and rolls that into your property’s tax base going forward. If you’re planning a major project, factor the ongoing tax increase into the cost.
Payment Dates and the Early-Payment Discount
Tax statements go out in October. The default schedule splits the bill into three equal installments due November 15, February 15, and May 15.4Oregon State Legislature. Oregon Revised Statutes 311.505 – Due Dates, Interest on Late Payments, Discounts on Early Payments Paying early earns a real discount:
- Pay the full year’s taxes by November 15 and take a 3% discount.
- Pay two-thirds of the total by November 15 and take a 2% discount; the remaining third is still due by May 15.4Oregon State Legislature. Oregon Revised Statutes 311.505 – Due Dates, Interest on Late Payments, Discounts on Early Payments
On a $5,000 tax bill, that 3% discount saves $150, which beats what most savings accounts would pay on the same money over the year. If you can swing the lump sum, it’s almost always worth it.
Payments go to your county tax collector. Most counties accept online payments, mailed checks, and in-person drop-offs. Electronic check payments through county portals typically carry a small processing fee, while credit card payments usually run around 2.5% of the transaction, which can wipe out your discount entirely. Pay by e-check or paper check to keep the savings.
What Happens If You Pay Late
Miss a deadline and interest accrues at one and one-third percent per month, or 16% annualized. The first installment gets a short grace window: interest doesn’t begin until December 15 if you miss November 15. The second and third installments accrue interest immediately after their February 15 and May 15 deadlines.4Oregon State Legislature. Oregon Revised Statutes 311.505 – Due Dates, Interest on Late Payments, Discounts on Early Payments Interest counts any fraction of a month as a full month, so being one day into a new month costs you a month of interest.
If taxes remain unpaid for three years from the earliest delinquency date, the county can initiate judicial foreclosure proceedings. After the court enters a foreclosure judgment, you still have a two-year redemption period to pay off everything owed, including the accumulated interest and costs.5Oregon State Legislature. Oregon Revised Statutes Chapter 312 – Section 312.120 If that period passes without payment, the property is deeded to the county and all ownership rights are lost. Roughly five years from the first missed payment to the final loss of the home, with interest and legal costs stacking the entire time.
How to Appeal Your Assessment
If you believe your real market value is too high, file a petition with the county’s Property Value Appeals Board (formerly the Board of Property Tax Appeals). The window opens when tax statements are mailed in October and closes December 31.6Oregon State Legislature. Oregon Revised Statutes 309.100 – Petitions for Reduction of Property Value The petition must be in writing, describe the facts supporting your claim, and be signed under oath. You can request an in-person hearing or let the board decide based on your written submission alone.
The board can only adjust the current year’s value, not prior years. It reviews the property’s value, not the tax amount, so your argument needs to focus on why the assessor’s market value estimate is wrong. The strongest evidence includes recent comparable sales near your property, a professional appraisal, photographs of condition issues the assessor may not have seen, and documentation of anything that reduces marketability, such as easements or environmental problems.
If the board’s decision doesn’t go your way, you can appeal to the Oregon Tax Court’s Magistrate Division. You’ll need to file a complaint form, attach the board’s order, and pay a filing fee.7Oregon Judicial Department. Appeal Filing – Oregon Tax Court Individuals can represent themselves; businesses and entities need an Oregon attorney or must file an authorization form for another representative. Filing can be done online, by mail, or in person at the court in Salem.
Programs That Can Lower or Defer Your Bill
Senior and Disabled Deferral
Oregon lets qualifying homeowners borrow from the state to cover their annual property taxes. The state pays your county tax bill each November, and the amount becomes a lien on your home that doesn’t come due until you sell, move out, or pass away. Interest accrues on the deferred balance at 6% per year.8Oregon Department of Revenue. Oregon Property Tax Deferral for Disabled and Senior Homeowners Program
To qualify for the 2026 tax year, you must meet all of the following as of April 15, 2026:
- Be at least 62 years old, or be disabled and receiving (or eligible to receive) federal Social Security disability benefits.9Oregon Department of Revenue. Oregon Property Tax Deferral for Disabled and Senior Homeowners
- Have total household income for the prior calendar year (2025) below $70,000, counting both taxable and nontaxable income of everyone living in the home.8Oregon Department of Revenue. Oregon Property Tax Deferral for Disabled and Senior Homeowners Program
- Own and live in the home as your primary residence.
Disabled applicants need to provide a copy of their Social Security disability award letter. The program can be a lifeline on a fixed income, but the 6% interest compounds. Over 10 or 15 years, the accumulated lien can become substantial, so run the numbers if you plan to stay long-term and want to preserve equity for heirs.
Disabled Veteran and Surviving Spouse Exemption
Veterans with a disability rating of 40% or more can exempt a portion of their home’s assessed value. Oregon law provides two tiers: a lower exemption for veterans with a general disability of 40% or more (not necessarily service-connected), and a higher one for veterans whose disability is certified as service-connected.10Oregon State Legislature. Oregon Code 307.250 – Property of Veterans or Surviving Spouses The statute set these base amounts at $15,000 and $18,000 respectively, and they grow by 3% each year. By 2025, the exemption had reached approximately $26,300 for general disabilities and $31,600 for service-connected disabilities.
Surviving spouses who haven’t remarried may also qualify for the service-connected exemption if the veteran died from a service-related injury or illness, or if the veteran received at least one year of the maximum exemption after 1981.10Oregon State Legislature. Oregon Code 307.250 – Property of Veterans or Surviving Spouses Both tiers require a certification letter from the U.S. Department of Veterans Affairs or the relevant military branch. You claim the exemption through your county assessor’s office each year.
Farm and Forest Special Assessment
Farmland and forestland can be taxed based on current agricultural or timber use rather than full market value. The difference can be enormous, especially for land near growing urban areas where market value reflects development potential rather than farming income.
Land inside an exclusive farm use (EFU) zone qualifies for special assessment as long as it’s used exclusively for farming.11Oregon State Legislature. Oregon Revised Statutes 308A.062 – Qualification of Exclusive Farm Use Zone Farmland Qualification is determined as of January 1 of each assessment year. Land outside an EFU zone faces stricter requirements: the property must have been used for farming for the preceding two years and must have met minimum gross income thresholds in three of the prior five years, scaled by acreage. Smaller parcels under about 6.5 acres need roughly $650 in annual gross farm income, mid-sized parcels need about $100 per acre, and parcels of 30 acres or more need at least $3,000. Hobby farming and firewood sales don’t qualify.
The catch is the back-tax lien. If you convert specially assessed farmland to a non-farm use like development, the county collects the difference between the taxes you actually paid and the taxes you would have paid at full market value. For land inside an EFU zone, the lookback reaches 10 years outside an urban growth boundary and 5 years inside one. For land outside an EFU zone, the lookback is up to 5 years. That deferred bill can be a shock if the gap between farm-use value and market value has been wide for a long time. Applications for non-EFU farmland and forestland are typically due between January 1 and April 1; EFU applications are accepted through August 15.