Washington Property Tax Deferral

The two Washington deferral programs people usually mean

Washington has more than one property tax relief path. This page focuses on deferral, especially the deferral for senior citizens and people with disabilities.

The official Washington Department of Revenue page on property tax exemptions and deferrals lists both deferral programs and links to the forms, brochures, income worksheets, laws, and rules.

What deferral means in plain English

A deferral delays payment. It does not erase the tax.

For the senior and disabled deferral, the Department of Revenue pays the deferred taxes or special assessments on behalf of the homeowner. The homeowner later repays the amount with interest.

This is why the word “deferral” matters. A person who qualifies for an exemption may have part of the tax bill reduced. A person who qualifies for a deferral is usually delaying payment and building a repayment obligation.

How this differs from other property tax help

• Exemption: Reduces part of the property tax bill if the homeowner qualifies.
• Freeze: Limits or freezes a value used for tax purposes under a specific program. It does not always freeze the bill itself.
• Deferral: Delays payment and usually creates a repayable debt secured by the home.
• Postponement: A similar idea used in some states. Washington’s main state program uses deferral language.
• Rebate or credit: A later payment or tax credit. This is different from delaying the property tax bill.
• Appeal: A challenge to the assessed value or another official decision. An appeal is not the same as a relief application.

Senior and disabled property tax deferral basics

The senior and disabled deferral is for a homeowner’s primary residence in Washington. The Department of Revenue describes this program as a way to postpone property taxes or special assessments owed for the residence.

To even be considered, the homeowner normally must fit several rules at the same time. Age alone is not enough. Disability alone is not enough. Income, ownership, occupancy, equity, insurance, and filing rules can all matter.

Age or disability rule

For the senior and disabled deferral, the claimant must generally be at least 60 years old by December 31 of the year the deferral claim is filed, or be retired from regular gainful employment because of disability. Washington law also has a continuation rule for certain surviving spouses, surviving domestic partners, heirs, or devisees of a person who was receiving a deferral at death if the successor is at least 57 and otherwise qualifies.

Do not assume that a doctor’s note by itself is enough. The county assessor may ask for official disability proof, such as Social Security or Veterans Administration documentation, or a state proof of disability affidavit.

Ownership and occupancy

The home must be the claimant’s residence. The deferral is not for a vacation home.

The state rule treats some jointly owned homes as owned by each spouse, domestic partner, or cotenant for program purposes. But not every ownership arrangement qualifies. Washington’s rule says a share ownership in cooperative housing, a life estate, a lease for life, or a revocable trust does not satisfy the ownership requirement for this senior and disabled deferral.

If the home is in a trust, an estate, heir ownership, a manufactured or mobile home title, or a shared ownership arrangement, contact the assessor before assuming the application will be accepted.

Income rule

The senior and disabled deferral uses a county-specific deferral income threshold. The threshold is not the same in every county.

The Department of Revenue posts the official income threshold tables. For tax years 2024 through 2026, the table lists a separate deferral threshold for each county. For tax years 2027 through 2029, the state has posted newer threshold information, and Washington’s 2026 property tax legislation may affect future threshold use. Confirm the year and county with the assessor before relying on any number.

Combined disposable income is a specific Washington property tax term. It can include income that a person may not think of as taxable income. Social Security, railroad retirement benefits, some pensions, annuities, dividends, interest, business income, rental income, and some military or veterans benefits may matter. Certain medical, care, prescription, Medicare, and other expenses may be deductible under the state worksheet.

Use the state’s Combined Disposable Income Worksheet and ask the assessor if you are unsure what to count.

Equity and insurance rule

The senior and disabled deferral is limited by the homeowner’s equity in the property. Equity generally means the assessed value of the residence and land, minus debts secured by the property.

Washington law and rules also require fire and casualty insurance in enough amount to protect the state’s interest in the claimant’s equity value. If insurance is not maintained as required, the amount that can be deferred may be limited, and a repayment event may occur.

This is one reason homeowners with mortgages, reverse mortgages, home equity loans, unpaid special assessments, or other liens should slow down and ask questions before filing.

The lien and repayment cautions

The lien is the part many people miss.

Under RCW 84.38.100, deferred special assessments or real property taxes become a lien in favor of the state. The law says the lien may accumulate up to 80% of the claimant’s equity value in the property and bears interest.

The Department of Revenue’s senior and disabled deferral brochure says taxes deferred on or after January 1, 2007 accrue interest at 5% per year. The brochure also says the homeowner must repay the deferred amount plus interest when a triggering event happens.

Common repayment events

• The property is sold, transferred, or conveyed to someone else.
• The claimant no longer permanently lives in the residence.
• The claimant dies, unless a qualified surviving spouse, domestic partner, heir, or devisee continues the deferral under the rules.
• The property is condemned.
• Required fire and casualty insurance is not kept in force, and the state rules make repayment due.
• The lien and interest reach program limits tied to equity.

Washington rules allow payment of part or all of the deferred amount. A partial payment does not automatically end the deferred status. Ask the assessor or treasurer how a partial payment would be applied before sending money.

Where to file in Washington

File with the county assessor for the county where the home is located. Do not send the first application only to the state Department of Revenue unless the assessor tells you to.

The Department of Revenue says county assessors value property and county treasurers collect property tax. The Department of Revenue oversees administration but does not collect property tax.

The assessor’s office decides whether the deferral application meets the program rules. The treasurer’s office handles payments, delinquency, penalties, interest on unpaid taxes, and foreclosure timing.

Use the Department of Revenue’s county assessor and treasurer directory to find the official county office.

What to say when you call

Forms and documents the assessor may ask for

The exact packet can vary by situation, but Washington’s state forms and instructions point to several common items.

• Completed senior and disabled deferral application, usually Form 64 0011 or the county’s current version.
• Combined Disposable Income Worksheet and income proof.
• Proof of age, such as a state ID, birth certificate, or other accepted document.
• Proof of disability if applying under the disability rule.
• Proof of ownership, such as a deed, title document, or trust documents if applicable.
• Proof that the home is the primary residence.
• Parcel or account number from the property tax bill.
• Mortgage, reverse mortgage, home equity line, special assessment, and other lien balances as of the required date.
• Fire and casualty insurance information, including loss payee requirements if applicable.
• Lender notarized signature if the mortgage, deed of trust, or contract requires the lender to collect funds to pay property taxes.

If the property is a manufactured or mobile home, ask whether the assessor needs a Department of Licensing certificate of title or title elimination document. If there is an accessory dwelling unit, ask how that affects the residence and income information.

Filing timing and late filing problems

The Department of Revenue’s due-date guidance says senior citizens and disabled persons claiming a deferral of special assessments or real property taxes must file with the assessor no later than 30 days before the tax or assessment is due.

Washington property taxes are commonly split between a first-half payment due April 30 and a second-half payment due October 31. Because the deferral filing rule is tied to the tax or assessment due date, do not wait until the bill is already delinquent to ask.

The senior and disabled deferral brochure says the county assessor can accept late applications. It also says filing a complete application at least 30 days before the tax or special assessment is due helps avoid late payment penalties and interest.

If you are applying because the county treasurer has started foreclosure for unpaid taxes, the brochure says you should apply within 30 days of receiving the foreclosure notice. Contact the county treasurer as well as the assessor. Do not assume the application alone stops every collection deadline.

The limited income deferral is different

Some Washington homeowners are looking for the limited income deferral, not the senior and disabled deferral.

The limited income deferral application is for the second half of real property taxes due in the year. The state form says it must be filed with supporting documents at the county assessor’s office no later than September 1 in the year the taxes are due.

For this program, the form instructions say the homeowner must pay the first half of the property taxes before qualifying to defer the second half. The instructions also say the income threshold is $57,000, and the homeowner must have owned the home for at least five years.

The limited income program has its own law, RCW 84.37, and its own rules under WAC 458-18A. Its interest rate is not the same as the senior and disabled deferral. The state form for 2026 says the annual interest rate on limited income deferrals made in 2026 is 6%.

Ask the county assessor which program fits your situation before you fill out the wrong packet.

When deferral is the wrong tool

A deferral can help with timing. It does not fix every property tax problem.

If the assessed value looks wrong

If the problem is that the county valued the home too high, you may need an assessment appeal, not a deferral. Washington property valuation appeals are generally made to the county board of equalization. The Department of Revenue explains this on its property tax payment and appeal page.

An appeal should focus on evidence. Useful evidence may include comparable sales, property record errors, photos, repair issues, square footage mistakes, and other valuation facts. A deferral application does not lower the assessed value.

If the homeowner may qualify for an exemption

If you qualify for the Washington senior, disabled, or disabled veteran exemption, that may reduce the tax bill instead of only delaying it. Washington rules say that, to the extent eligible, a claimant must first apply for the exemption before filing the senior and disabled deferral.

Ask the assessor to screen for both the exemption and the deferral. Do not choose deferral only because the form is the first one you found.

If the homeowner is a renter

Renters do not file for this Washington property tax deferral because the program applies to an owner-occupied residence with property taxes or special assessments owed on that residence.

If you are helping a renter, do not use a homeowner deferral form. Ask whether the renter has a separate state, local, or federal housing issue. That is a different path from this property tax deferral program.

If the application is denied

If the county assessor denies a deferral application, ask for the denial in writing and ask what rule or document caused the denial.

The Department of Revenue’s senior and disabled deferral brochure says the homeowner may appeal the assessor’s decision to the county board of equalization, and that the board must receive the appeal by July 1 or within 30 days of the denial, whichever date is later.

For a denial, focus on the missing fact. It may involve income, disability proof, ownership, occupancy, insurance, equity, mortgage balances, lien information, or use of the wrong form.

Do not rely on emotional arguments. Ask what evidence would fix the issue, and ask whether a corrected application is allowed before the appeal deadline passes.

A safe step-by-step plan

1. Find your county assessor using the official Department of Revenue directory.
2. Ask whether exemption should be checked before deferral.
3. Ask which deferral program applies.
4. Use the correct tax year, income year, and current form.
5. Complete the Combined Disposable Income Worksheet.
6. Gather proof of age, disability, ownership, occupancy, income, mortgage balances, liens, and insurance.
7. Ask how the lien, interest, and repayment rules could affect the home.
8. File early and keep a full copy of everything submitted.