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30-Year Fixed Jumbo Mortgage Refinance Interest Rates in Seattle, WA

Explore 30-year jumbo mortgage interest rates in Seattle, WA over time.

As of Apr 6, 2026
Washington Avg

7.014%7.01%

-0.08% · 1wk
National Avg

6.870%6.87%

-0.07% · 1wk

Timeframe

30-jumbo Year Fixed Mortgage Interest Rates

Daily refinance averages provided by the Mortgage Research Center.


Compare mortgage rates in Seattle, Washington

Showing results for: 30-Year Fixed refinance offers for Single Family or Townhome properties in WA, total loan amount of $800,000.

LenderAPR / RateMonthly Payment
Mortgage Rate Company

Rate data provided by RateUpdate.com. Displayed by Mortgage Research Center, NMLS #1907, Equal Housing Opportunity. Rates and fees are estimates and subject to change without notice. Payments do not include taxes and insurance premiums. Actual payments may be higher. Not all lenders participate in this marketplace. Loan availability and terms may vary by state and lender. Lender offers, including badges like “Lowest APR” or “Lowest Payment,” are based only on results displayed here and may not reflect the absolute lowest offer available in the market. Rate and product details


Should I Refinance My Jumbo Mortgage in Seattle's Hot Market with 10.6% Appreciation?

With Seattle's strong 10.6% appreciation rate and median home values at $773,200, homeowners have likely built substantial equity. For jumbo mortgages (loans exceeding $806,500), refinancing when rates drop by 0.75-1% or more typically makes financial sense. On a $800,000 jumbo loan, refinancing from 7% to 6% saves $526/month ($6,312/year). With jumbo refinance closing costs around $20,000, you'd break even in 38 months. The rapid equity growth in Seattle also creates opportunities for jumbo cash-out refinancing to access built-up wealth.

How Much Can I Save Refinancing a Jumbo Loan in Seattle?

The savings on jumbo refinances are substantial due to large loan amounts. For a typical $800,000 jumbo loan in Seattle (80% LTV on $773,200 median homes), reducing your rate from 7% to 6% saves $526monthly. Over the 30-year life, that's $189k in total interest savings. Even after $20,000 closing costs (2.5% of loan amount), you're ahead after just 38 months. In Seattle's hot market with 10.6% annual appreciation, homeowners typically refinance when equity gains justify eliminating PMI or accessing cash for improvements.

What Are Jumbo Cash-Out Refinance Options in Seattle?

Seattle's 10.6% appreciation creates significant equity-access opportunities through jumbo cash-out refinancing. If your home appreciated to $773,200 and you tap 20% equity ($200,000), your new loan becomes $1,000,000 at approximately 6.5% (cash-out rates typically run 0.25-0.5% higher). Monthly payment: $6,321. Jumbo cash-out proceeds are commonly used for investment properties, major renovations, debt consolidation, or business ventures. With Seattle's property taxes at 0.98% ($631/month), factor PITI into affordability calculations when refinancing.

Do Jumbo Refinance Rates in Seattle Differ from Conforming Rates?

Yes. Jumbo loans in Seattle (any loan exceeding $806,500) typically carry rates 0.25-0.75% higher than conforming loans due to increased lender risk. However, borrowers with excellent credit (740+), low debt-to-income ratios (under 43%), and substantial reserves (6-12 months) can secure competitive jumbo rates. For Seattle's median home value of $773,200, an 80% LTV loan ($800,000) is near the jumbo threshold. Shop multiple lenders-portfolio lenders and credit unions sometimes offer better jumbo refinance rates than big banks. Rate differences compound over time: 0.5% higher on $800,000 costs ~$261/month extra.

What Are the Tax Implications of Jumbo Refinancing in Seattle?

Jumbo refinance interest remains tax-deductible up to the first $750,000 of mortgage debt ($375,000 if married filing separately). For Seattle homeowners with $800,000jumbo loans, interest on the excess amount isn't deductible. However, with Seattle's 0.98% property tax rate ($631/month on median homes), combined property tax and mortgage interest deductions can still significantly reduce taxable income. Cash-out refinance proceeds are generally not taxable as income. If using cash-out funds for home improvements, that interest may also be deductible. Consult a tax professional to optimize your Seattle jumbo refinance strategy, especially given the $773,200 median home values and high loan amounts involved.

Jumbo Loan Refinancing Strategy in Seattle

Because Seattle prices easily push into Jumbo Loan territory, your Loan-to-Value (LTV) ratio is your most important metric.

With values appreciating at 10.6%, your equity is growing at a healthy clip. If your LTV dips below 80%, you can negotiate much better rates. If you bought in recent years with a small down payment, this 10% bump might be exactly what you need to remove your Private Mortgage Insurance (PMI).

Property Tax Tip for Seattle Homeowners

When you refinance, your new lender will recalculate your "escrow" based on your home's *new* value. Be prepared for your tax escrow to adjust, and factor that into your monthly budget.

Washington Refinance Programs for Seattle Residents

The Washington State Housing Finance Commission (WSHFC) offers a specific "EnergySpark" program. If you are refinancing to renovate for energy efficiency (like solar panels or smart heating in your Seattle home), you can get a 0.25% rate discount!


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