Oregon Property Tax Guide: Rates, Rules, Deadlines & How to Appeal

Oregon property tax is a local tax on real estate that funds schools, police, fire protection, libraries, and other essential services. Unlike many states, Oregon’s property tax system is shaped by two voter-approved measures; Measure 5 and Measure 50, which limit tax rates and cap annual growth of assessed values.

Due date: November 15 every year
Discounts: Up to 3% if paid in full by Nov 15
Installments: Option to pay in 3 parts (Nov 15, Feb 15, May 15)
Appeals: File with your county’s Board of Property Tax Appeals before December 31

Below is a detailed breakdown of how Oregon property taxes work, how rates are calculated, deadlines, exemptions, and what to do if you disagree with your tax bill.

How Oregon Property Tax Works

Oregon property tax is administered locally by county assessors, not by the IRS or state tax department. Each county assessor determines the value of real property (land and structures) and applies local tax rates (levies) from schools, cities, counties, and special districts.

Two unique laws define the system:

Measure 5 (1990): Limits the maximum tax rate per $1,000 of real market value — $5 for schools and $10 for general government.
Measure 50 (1997): Rolled back assessed values to 1995–96 levels minus 10%, then capped future increases at 3% per year, unless major changes (new construction, remodels, or loss of exemption) occur.

The result: You might see your home’s real market value (RMV) skyrocket, but your assessed value (AV) — the figure your taxes are based on and can only grow by about 3% annually (plus new levies).

How Your Oregon Property Tax Is Calculated

Property taxes in Oregon are not a flat percentage. They’re a product of multiple steps:

Determine RMV (Real Market Value): What your property would sell for on the open market.
Set MAV (Maximum Assessed Value): Limited by Measure 50 (1997 baseline, +3% per year).
Calculate AV (Assessed Value): The lower of RMV and MAV.
Apply Levy Rates: Local governments and districts set rates per $1,000 of assessed value.
Final Tax Bill: AV ÷ 1,000 × levy rate.

Example: Portland Home Valued at $500,000

RMV: $500,000
MAV cap: $320,000 (from historic base + 3% growth cap)
Assessed Value (AV): $320,000 (lower of RMV vs MAV)
Levy rate (Multnomah County 2024): ~ $16.50 per $1,000 AV
Tax Bill: $320,000 ÷ 1,000 × 16.5 = $5,280

This explains why some long-term Portland homeowners pay much lower taxes than new buyers, their AV is capped far below current RMV.

Oregon Property Tax Rates & National Comparison

According to the Tax Foundation, Oregon’s effective property tax rate is about 0.90% of home value — slightly below the national average (~1.05%).

State	Effective Rate (2024 est.)	Notes
Oregon	~0.90%	Lower than WA and CA
Washington	~1.06%	State school levy adds burden
California	~0.71%	Prop 13 caps property taxes
New Jersey	~2.23%	Highest in the U.S.
Hawaii	~0.26%	Lowest in the U.S.

Key takeaway: Oregon’s property tax burden is moderate — not as low as California, but below many states with no sales tax.

Deadlines & Payments — What Owners Must Know

Bills mailed: In October each year.
Payment due: November 15.
Discounts:
- 3% off if full amount paid by Nov 15
- 2% off if two-thirds is paid by Nov 15
Installments allowed:
- Nov 15, Feb 15, May 15 (no discount if you pay in parts)

Late penalties: Interest accrues at 1.33% per month on unpaid balances. After several years, counties may place a lien and initiate foreclosure proceedings.

How to pay:

Online county portals (credit card, e-check)
Mail (postmark counts)
In person at the county tax office
Mortgage escrow (lender pays directly)

In Multnomah County (Portland), most homeowners pay via escrow with their lender, but investors and landlords often pay directly.

Exemptions, Deferrals & Special Programs

Unlike some states, Oregon has no broad homestead exemption. Instead, it offers targeted programs:

Senior & Disabled Property Tax Deferral: Qualifying homeowners (age 62+ or disabled) can defer paying property taxes; the state pays the county, and a lien is placed until repayment.
Veteran’s Exemption: Disabled veterans and their surviving spouses may qualify for partial property tax exemptions (amount varies by county).
Special Assessment Programs: For farmland, forestland, and certain nonprofit uses.

To apply, homeowners must file with their county assessor and meet strict eligibility requirements.

How to Appeal Your Oregon Property Tax Assessment

If you believe your tax bill is too high because your property is overvalued, you can file an appeal.

Step 1: Review your tax statement

Check your RMV and AV. If RMV looks higher than comparable sales, you may have grounds.

Step 2: Gather evidence

Comparable recent sales, appraisals, photos, repair estimates, or income/expense docs (for rentals).

Step 3: File with the Board of Property Tax Appeals (BOPTA)

Deadline: Generally by December 31 each year
Where: County assessor’s office (forms available online)
Cost: Usually a small filing fee

Step 4: Hearing & Decision

You’ll present your evidence before the board. If unsuccessful, you may escalate to the Oregon Tax Court (Magistrate Division).

Pro tip: Even small reductions can save thousands over time due to Measure 50’s 3% cap on AV growth.

Why Your Oregon Property Taxes May Jump

Even with the 3% cap, bills can rise for several reasons:

New voter-approved levies (schools, libraries, bonds)
Increase in tax rates within your levy code
Additions, remodels, or new construction
Expired exemptions or deferrals
“Compression” adjustments that shift burdens among properties

Always check your tax statement to see which districts make up your total bill.

Portland/Multnomah County Spotlight

In Portland, Multnomah County property taxes are among the highest in Oregon because of numerous overlapping taxing districts.

Typical levy components include:

Portland Public Schools
City of Portland (general government)
Multnomah County
Metro regional government
Library and bond levies

For a $500,000 home, taxes can easily exceed $5,000 annually, depending on your levy code.

You can view levy rates by district on the Multnomah County Assessor’s website.

Checklist for Oregon Homeowners

✅ Review your property tax bill in October
✅ Verify assessed value (AV) against market comparables
✅ Check eligibility for senior/disabled deferral or veteran’s exemption
✅ Apply for exemptions before deadlines
✅ File appeals by December 31 if needed
✅ Pay by November 15 to secure discounts
✅ Use a property manager if you own rentals and want deadlines handled

Resources for Homeowners

Conclusion

Oregon’s property tax system is complex shaped by historic measures, capped growth, and local levies that vary across counties. While rates are moderate compared to other states, bills can still be a shock if you’re unprepared.

The keys to staying ahead: know your deadlines, check for exemptions, and appeal if you believe your property is overvalued.

👉 Need help managing your property taxes or staying compliant as a landlord? Contact Portland Rental Property Manager today for expert guidance.

FAQs

When are property taxes due in Oregon?
They are due November 15 each year. You can pay in full or in 3 installments (Nov 15, Feb 15, May 15). Discounts apply for full or two-thirds payments by Nov 15.

How do Measure 5 and Measure 50 affect my taxes?
Measure 5 sets limits on tax rates per $1,000 of market value. Measure 50 rolled back assessed values to mid-1990s levels and capped annual AV growth at 3%.

Can I appeal my Oregon property taxes?
Yes. File with your county’s Board of Property Tax Appeals (BOPTA) by December 31, provide evidence, and attend a hearing.

Do seniors get property tax relief in Oregon?
Yes. Qualifying seniors (62+) and disabled homeowners may defer property taxes through the state deferral program.

Why are property taxes higher in Portland than elsewhere in Oregon?
Because Multnomah County includes more overlapping levies (schools, libraries, Metro, bonds), raising the total effective tax rate.