Washington's Senior Property Tax Exemption and Your Mortgage

The senior property tax exemption Washington homeowners can claim reduces or removes part of the property tax on a home you own and live in, if you are 61 or older, retired because of a disability, or a qualifying disabled veteran, and your household income is under a county threshold. For anyone with a mortgage, the exemption changes the tax number your servicer escrows, which changes your monthly payment and the payment a lender uses to qualify you on a refinance.

The people who ask me about it are usually not the homeowners. It is the daughter in Wallingford helping her father refinance, who opens his escrow statement and wonders why the tax line looks low. It is the retired teacher on Capitol Hill who got the exemption years ago, now wants to downsize to an Eastlake condo, and wants to know whether it follows her. It is the couple weighing a reverse mortgage who have heard about a state program that lets them put off paying their taxes altogether.

This guide covers the senior property tax exemption Washington law sets up in RCW 84.36.381 and the separate deferral program in chapter 84.38 RCW, read from the loan file's side. I do not set the tax, decide eligibility, or calculate your income for the program. The King County Assessor does all three, and your CPA is the right reader of how your income is counted. What I can tell you is what each program does to a mortgage. The mechanics of the escrow account itself live in the escrow account guide, and I link there rather than repeat them.

What the Senior Property Tax Exemption Washington Law Actually Does

The exemption is not a discount on your whole bill. It removes specific layers of property tax, and how many layers depends on your household income. I read the current text of RCW 84.36.381 on September 25, 2026; it was last amended in 2026. In plain terms:

• Every qualifying household is exempt from voter-approved excess levies, from the state school levy, and from certain voter-approved local levy lid lifts when the ballot measure named the exemption.
• Households under the middle income threshold are also exempt from regular property taxes on the greater of $70,000 or 45 percent of the home's value, up to $200,000 of value.
• Households under the bottom income threshold are exempt from regular property taxes on the greater of $80,000 or 80 percent of the home's value.
• The value is frozen. For qualifying owners, the value used for the exemption is the assessed value as of January 1 of the year you first qualified. In a Seattle market where assessed values have risen sharply, that freeze is often worth as much as the exemption itself.

The three income thresholds are not statewide dollar amounts. Each is a percentage of the county's median household income, and the Washington Department of Revenue publishes the updated figures for every county. The 2026 legislative session raised those percentages for taxes collected in 2027 and after, so a King County household that was just over the line last year may be under it now. I do not print the King County dollar figure here because it moves and because the assessor's page is the only number that counts. The King County senior exemption portal shows the current threshold and takes applications online.

Who Qualifies, and the Income Test That Surprises Families

The statute sets four conditions, and all of them have to be true.

• Age, disability, or veteran status. You are 61 or older by December 31 of the year you file, or you were retired from regular gainful employment because of a disability when you filed, or you are a veteran receiving VA compensation at a combined service-connected rating of 40 percent or higher, or at a total disability rating. A surviving spouse or domestic partner of someone who was receiving the exemption can qualify at 57.
• Ownership. You own the home, whether outright, as a life estate, or by contract purchase. A home owned by a married couple, registered domestic partners, or cotenants counts as owned by each of them.
• Occupancy. The home is your principal place of residence, which the definitions section sets at more than six months of each calendar year. A move into a hospital, nursing home, assisted living, an adult family home, or a relative's home for long-term care does not end the exemption if the house sits empty, stays occupied by a spouse or dependent, or is rented to pay for the care.
• Household income. Combined disposable income is under the county threshold.

That last condition is where families get surprised. "Combined disposable income" is not your adjusted gross income. It adds back items like Social Security, pension and annuity receipts, dividends, and most capital gains, and then allows deductions for specific costs such as prescriptions, Medicare premiums, in-home or facility care, and long-term care insurance. It also counts the income of your spouse or domestic partner and of each cotenant, which the law defines as a person who lives with you and has an ownership interest in the home.

That definition matters to the loan file. If a parent adds an adult child to title so the child can co-borrow on a refinance, and the child lives in the home, the child's income may now count toward the parent's exemption. A child who co-borrows but lives elsewhere is not a cotenant under that definition. The assessor decides how your particular household is counted, and the multigenerational home loan guide covers the lending side of a parent and adult child on the same loan. Please talk with the assessor before anyone is added to title, not after.

If the home is held in a living trust, ask the assessor how they treat trust ownership for the exemption before you assume anything. The LLC and trust guide covers what a trust does to the loan; the tax side is the assessor's and your attorney's.

How a Senior Property Tax Exemption Washington Homeowners Win Reaches the Mortgage Payment

If your taxes are paid through an escrow account, the exemption does not show up on your mortgage statement right away. The sequence runs like this.

1. You file with the assessor. A claim filed during a year applies to taxes payable the following year. King County takes claims through its online portal, and it recommends the portal over paper because paper claims take longer to process.
2. The county sends a reduced bill. Your servicer pulls the tax amount from the county, the same way it does every year.
3. The next escrow analysis catches up. The servicer recalculates your monthly escrow deposit on the lower tax figure. If the account collected more than it now needs, a surplus comes back to you under the federal escrow rules, and your monthly payment drops going forward.

An illustrative example, not a quote: if the exemption lowers the annual tax your servicer pays by $3,600, the tax share of your monthly escrow deposit falls by about $300 at the next analysis. The principal and interest do not change at all. The escrow account guide explains the analysis, the cushion, and how surpluses and shortages are handled, which is the same math running in the opposite direction from the shortage letter most people get.

If you do not want to wait, you can call your servicer once the county's bill reflects the exemption and ask whether it will run an early analysis. Some will. And if you pay your own taxes without an escrow account, the exemption simply lowers the bill you pay the county.

Refinancing, a HECM, or a Downsizing Purchase With the Exemption in Place

The exemption touches three kinds of loans I see often with Seattle homeowners in their sixties and seventies.

A refinance. When I qualify you for a refinance, the property tax is part of the housing payment in your debt-to-income ratio. If the exemption is already on the current tax bill, the lower number generally flows through, which can matter on a file where retirement income is tight. If your claim is pending, we have a timing decision to make: underwrite on the bill that exists today, or wait until the reduced bill is issued. I would rather make that call with you up front than discover it at underwriting. The refinance guide walks through the paths, and the retirement mortgage options guide covers how retirement income is documented.

A reverse mortgage. On a HECM, you remain responsible for property taxes, insurance, and upkeep for as long as you live in the home, and the lender's financial assessment looks at whether you can carry those charges. A lower tax bill lowers what you are carrying. The HECM mechanics themselves are covered on the retirement mortgage options page, and I do not restate them here. If you are also using the deferral program described below, tell me early, because a state lien on the home is part of any reverse mortgage conversation.

A downsizing purchase. The law lets you transfer your exemption status to a replacement residence if you sell or are displaced, as long as you do not receive an exemption on more than one home in a year. The frozen value does not come with you, though. The value used on the new home is its assessed value on January 1 of the year you transfer. And your escrow on the new purchase will usually be built on the seller's tax bill, which reflects the seller's situation, not yours. The empty nest downsizing guide covers the move itself; I plan the escrow estimate with you so the first year is not a surprise in either direction.

The Deferral Program Is a Loan Against the House

Washington runs a second program alongside the exemption, and it works very differently. Under chapter 84.38 RCW, a qualifying homeowner can defer payment of property taxes and special assessments instead of paying them now. The state pays the local taxing districts, and the deferred amount becomes a debt secured by the home. I read the statute on September 25, 2026. What it means for a mortgage:

• It is a recorded lien. The deferred taxes become a lien in favor of the state, and the Department of Revenue files a notice of the deferral with the county recorder. It will show up on the title report for any refinance or sale.
• It accrues interest. The lien bears interest at 5 percent a year, and it can accumulate up to 80 percent of your equity value in the home.
• Your servicer has to sign. If your mortgage requires an escrow account for taxes, the mortgage holder must cosign the deferral declaration. The mortgage keeps priority over the deferral lien.
• It comes due. The deferred amount becomes payable when the home is sold, when the claimant dies (unless a qualifying surviving spouse, domestic partner, heir, or devisee takes it on), when the claimant stops living there permanently, or when a program condition fails.
• Insurance is required. The claimant must keep fire and casualty insurance in force.
• Trust ownership does not qualify. The deferral statute says a claimant whose ownership is only a revocable trust, a life estate, a lease for life, or a cooperative share does not meet the ownership requirement.

The deferral has its own eligibility: age 60 or older, or retired because of a disability, with a higher income threshold than the exemption. There is no disabled-veteran path in the deferral statute. Because equity value is the home's value on the assessor's records minus existing liens, a cash-out refinance that raises your loan balance also shrinks how much can be deferred.

None of this makes the deferral a bad choice. For someone with a lot of equity and very little income, it can be the difference between staying and selling. It is a loan, though, and it should be weighed against the other ways to turn home equity into cash flow, such as a HELOC or cash-out refinance or a reverse mortgage. Your CPA and, for an estate question, your attorney should be part of that conversation.

Senior Property Tax Exemption Washington vs the Deferral, Side by Side

Summarized from RCW 84.36.381, 84.36.383, 84.36.385, and chapter 84.38 RCW as read on September 25, 2026. The assessor applies both programs, and the details of your case are theirs to decide.

Selling, Transferring, or Buying a Home That Had the Exemption

The exemption belongs to the qualifying owner, not the house, and that cuts in three directions.

When you sell. The exemption ends for that home. If you are buying a replacement, you can carry your status to it, as described above. If you had a deferral, the deferred balance and interest come out of the sale proceeds at closing, the same way your mortgage payoff does. The Washington closing guide covers how escrow handles payoffs.

When the owner dies. A surviving spouse or domestic partner who is 57 or older and otherwise meets the requirements can keep the exemption. A deferral can be carried on by a qualifying surviving spouse, domestic partner, heir, or devisee; otherwise it becomes payable. For the heirs, the inherited home guide covers the mortgage side.

When you are the buyer. If the seller had the exemption, the tax bill you see during your purchase is the seller's reduced bill, not yours. If your escrow account is built on it, the first escrow analysis will show a shortage. The escrow account guide covers this in its section on why the year-one estimate is usually wrong, and I build the estimate on the full levy when I can see the seller had an exemption.

One more obligation runs the whole time you hold the exemption: the law requires you to tell the assessor about any change in status that affects eligibility, such as a move, a change in household income, or a change in ownership. The county will also ask you to renew at least once every six years. An exemption granted on information that turns out to be wrong can be collected back, with penalties, for up to five years. If you are unsure whether a change counts, call the assessor's exemption line at (206) 296-3920.

What I Do When a Senior Property Tax Exemption Washington Claim Is in Play

My job is the loan, and the exemption is the assessor's decision. Where the two meet, here is what I do:

• Read the current tax statement for exemption codes, so the qualifying payment matches what you will actually pay.
• Ask whether a claim is pending, and plan the underwriting timing around it rather than finding out at the appraisal.
• Check the title report for a deferral lien before we price a refinance, since it changes both the payoff and the equity picture.
• Flag, before closing, any title change that could bring a new cotenant's income into your household.
• Send you to the assessor and your CPA for every question about eligibility and income. Washington historically has had no broad income tax; a tax on very high incomes has been enacted, and your CPA is the right reader of how any tax rule touches you.

FAQ: Senior Property Tax Exemption Washington Mortgage Questions