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Updated 2025 Tax Year

Grant County
Property Tax Guide

Everything you need to know about property taxes in Grant County, OR. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
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Quick Facts
Tax Rate
1.25% to 2.1% of assessed value (varies by taxing district combination)
Exemptions
5+ Available
Section 1

How Property Tax Works

Grant County, Oregon operates under a property tax system that funds essential local services including schools, fire protection, road maintenance, and county operations. Property taxes are the primary revenue source for these services, with tax bills reflecting contributions to multiple taxing districts that serve your specific location within the county.

The effective tax rate in Grant County varies significantly by location due to different combinations of special taxing districts. Based on 2024 data payable in 2025, rates range from approximately 1.25% to over 2.1% of assessed value, depending on which school districts, fire districts, and other special service areas serve your property. For example, properties in Sims Township face a total rate of 2.138100%, while other areas may have different rates. Your actual rate depends on the specific overlay of taxing districts at your property location.

Property assessments in Grant County follow Oregon's real market value system, with properties assessed at their full market value as of January 1st each year. Unlike some states, Oregon does not have a statewide assessment cap, though individual tax credits may help limit tax growth for qualifying property owners who apply for available programs.

Section 2

What Makes Up Your Tax Bill

The following rates are for the 2024 tax year (payable in 2025) and vary by taxing district location:

ComponentRateDescription
Grant County0.678100%County general operations, roads, sheriff, courts
School DistrictsVariesK-12 education funding, varies by district
Fire ProtectionVariesLocal fire department services
Port DistrictsVariesEconomic development, if applicable
Other Special DistrictsVariesCemetery, library, or other local services
Example Total (Sims Township)2.138100%Combined rate for this specific area

Important: Your actual tax rate depends on which special taxing districts serve your property. The Grant County rate of 0.678100% represents approximately 31.72% of the total tax bill in Sims Township, with the remainder going to schools and other local districts. Contact the Grant County Assessor's Office to determine the exact rate combination for your specific property address.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Grant County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Oregon law requires supplemental tax assessments when property changes hands or undergoes new construction during the tax year. These supplemental taxes ensure that tax obligations are properly allocated between previous and current property owners based on their actual ownership periods.

Supplemental taxes are triggered by ownership changes (such as sales or transfers) and new construction that adds value after January 1st. The calculation is based on the difference between the old assessed value and new assessed value, prorated for the remaining months of the tax year. For example, if you purchase a property in Grant County in July that was previously assessed at $200,000 but now has a market value of $350,000, you would owe supplemental taxes on the $150,000 difference for the remaining 6 months of that tax year.

Supplemental tax bills are typically issued 30-60 days after the triggering event and have separate due dates from regular property tax installments. These additional assessments help ensure fair distribution of tax obligations and maintain funding stability for local services throughout the year.

Example Calculation

The following examples show estimated annual property taxes for Grant County using an approximate average rate. Actual rates vary by specific taxing district combinations:

$300,000 Property:

  • Assessed Value: $300,000
  • Less: Senior/Disabled Tax Credit (if applicable): -$1,000
  • Net Taxable Value: $299,000
  • Tax Rate (estimated average): 1.8%
  • Annual Tax: $5,382
  • Monthly (if escrowed): $448

$600,000 Property:

  • Assessed Value: $600,000
  • Less: Homestead Tax Credit (if applicable): -$1,000
  • Net Taxable Value: $599,000
  • Tax Rate (estimated average): 1.8%
  • Annual Tax: $10,782
  • Monthly (if escrowed): $899

$1,000,000 Property:

  • Assessed Value: $1,000,000
  • Less: Tax Credits (if applicable): -$1,000
  • Net Taxable Value: $999,000
  • Tax Rate (estimated average): 1.8%
  • Annual Tax: $17,982
  • Monthly (if escrowed): $1,499

Note: Tax credits shown require separate applications and approval. Actual rates vary by location within Grant County based on special district combinations.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Grant County require borrowers to maintain an escrow account for property tax payments, especially when the loan-to-value ratio exceeds 80%. Your lender collects monthly escrow payments along with your mortgage payment, then pays your property taxes directly to Grant County when due.

Grant County property taxes are payable in two installments: the first half due by December 10th and the second half due by May 10th of the following year. Your mortgage company will typically pay each installment on time to avoid penalties. Lenders are required to provide annual escrow statements showing all deposits, payments, and account balances, and must notify you of any escrow shortages or surpluses.

If you pay property taxes directly (without escrow), you're responsible for making timely payments to avoid late penalties. You can verify that payments have been received by checking with the Grant County Tax Collector's office or through their online payment system. Property owners should retain payment receipts and monitor their accounts to ensure proper credit for all payments made.

How HonestCasa Helps
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Section 6

Frequently Asked Questions

Q: When are property taxes due in Grant County for the 2024-2025 fiscal year? A: Property taxes are due in two installments: first half by December 10th and second half by May 10th. Late payments incur penalties and interest charges.

Q: What tax credits are available and do I need to apply? A: Oregon offers several tax credits including homestead credits for qualifying homeowners, senior/disabled person credits, and disabled veteran credits. All credits require separate applications and are not automatically applied. Contact the Grant County Assessor's office for application forms and deadlines.

Q: How does the homestead tax credit work? A: Oregon's homestead tax credit helps limit assessment increases for qualifying owner-occupied homes, not reduce market value. This credit requires annual application and has income and other eligibility requirements. It does not automatically reduce your assessed value.

Q: How often are properties reassessed in Grant County? A: Properties are assessed annually as of January 1st at their real market value. You'll receive an assessment notice in the spring if your value has changed significantly.

Q: Can I appeal my property assessment? A: Yes, you can appeal your assessment to the Grant County Board of Property Tax Appeals. Appeals must typically be filed by December 31st of the tax year. Contact the Assessor's office for specific appeal procedures and deadlines.

Q: What happens if I pay my property taxes late? A: Late payments incur penalties and interest charges. Unpaid taxes can eventually result in tax liens and foreclosure proceedings against your property.

Q: Can I pay my property taxes online? A: Yes, Grant County offers online payment options. Visit the Grant County website or contact the Tax Collector's office for available payment methods and any associated convenience fees.

Q: Why do tax rates vary within Grant County? A: Different areas are served by different combinations of special taxing districts (schools, fire, ports, etc.). Your specific location determines which districts serve your property and therefore your total tax rate.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
County
Tax Rates - Grant County Treasurertreasurer.grantcounty27.us
02
Tax Doc
2025 Tax Ratesgrantcountynm.gov
03
County
Tax Rates - Grant County Treasurertreasurer.grantcounty27.us
04
County
Grant County Property Taxesnacdashboard.nara.gov
05
County
Grant County: FAQsin.gov
06
Important Dates in the Treasurer's Officegrantcountynm.gov
07
County
Homestead Exemptions - Grant County Nebraskagrantcountyne.gov
08
Exemptionsgrantcountynm.gov
09
County
Grant County: FAQsin.gov
10
County
Tax List - Grant County Treasurertreasurer.grantcounty27.us
All sources verified as of 2025 Tax Year

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