Seattle Mortgage Calculator
Estimate your monthly mortgage payment in Seattle, WA. On the local median home value of $820,000 — with a 20% down payment at today's rates — expect a total monthly payment (principal, interest, taxes, and insurance) of about $4,899. Adjust every input for your situation.
Monthly Breakdown
- Principal & Interest$4,146
- Property Tax$670
- Home Insurance$83
Amortization Schedule
| Year | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | $49,756 | $7,332 | $42,424 | $648,668 |
| 2 | $49,756 | $7,823 | $41,933 | $640,844 |
| 3 | $49,756 | $8,347 | $41,409 | $632,497 |
| 4 | $49,756 | $8,906 | $40,850 | $623,591 |
| 5 | $49,756 | $9,503 | $40,254 | $614,088 |
| 6 | $49,756 | $10,139 | $39,617 | $603,949 |
| 7 | $49,756 | $10,818 | $38,938 | $593,131 |
| 8 | $49,756 | $11,543 | $38,214 | $581,588 |
| 9 | $49,756 | $12,316 | $37,441 | $569,272 |
| 10 | $49,756 | $13,141 | $36,616 | $556,131 |
| 11 | $49,756 | $14,021 | $35,736 | $542,111 |
| 12 | $49,756 | $14,960 | $34,797 | $527,151 |
| 13 | $49,756 | $15,962 | $33,795 | $511,190 |
| 14 | $49,756 | $17,031 | $32,726 | $494,159 |
| 15 | $49,756 | $18,171 | $31,585 | $475,988 |
| 16 | $49,756 | $19,388 | $30,368 | $456,600 |
| 17 | $49,756 | $20,686 | $29,070 | $435,913 |
| 18 | $49,756 | $22,072 | $27,685 | $413,842 |
| 19 | $49,756 | $23,550 | $26,206 | $390,292 |
| 20 | $49,756 | $25,127 | $24,629 | $365,164 |
| 21 | $49,756 | $26,810 | $22,946 | $338,354 |
| 22 | $49,756 | $28,606 | $21,151 | $309,749 |
| 23 | $49,756 | $30,521 | $19,235 | $279,227 |
| 24 | $49,756 | $32,565 | $17,191 | $246,662 |
| 25 | $49,756 | $34,746 | $15,010 | $211,915 |
| 26 | $49,756 | $37,073 | $12,683 | $174,842 |
| 27 | $49,756 | $39,556 | $10,200 | $135,286 |
| 28 | $49,756 | $42,205 | $7,551 | $93,080 |
| 29 | $49,756 | $45,032 | $4,724 | $48,048 |
| 30 | $49,756 | $48,048 | $1,708 | $0 |
Swipe the table sideways to see all columns →
How to use this calculator
The Home Price field is pre-filled with the median home value in Seattle (about $820,000). Override with your target home's actual price to get a payment estimate for that specific property.
The Property Tax Rate is pre-filled with Washington's average effective rate of 0.98%. Within Washington, rates vary by county — if you know your specific local rate, override it for a more precise estimate.
Adjust the Down Payment slider to see how your payment changes. Below 20% down triggers PMI; the calculator adds it automatically and shows a warning.
Scroll down for the full PITI breakdown, monthly payment pie chart, and complete month-by-month amortization schedule.
How it works
Buying a median-priced home in Seattle. At $820,000 with a 20% down payment, you'd bring $164,000 to closing (plus closing costs) and take out a $656,000 mortgage. At a 6.50% interest rate on a 30-year fixed loan, your monthly principal + interest is roughly $4,146.
Annual costs on top of the loan. Washington's average property tax rate is 0.98%, so a median-priced Seattle home generates approximately $8,036 in annual property tax (about $670/mo when paid through escrow). Homeowner's insurance in Washington averages around $1,000/year.
Total monthly payment (PITI) on the median Seattle home works out to about $4,899 per month at current rates, assuming a 20% down payment and no HOA. If you're putting less than 20% down, add PMI to this — typically 0.5–1.5% of the loan balance per year.
Rates change; this is the math, not the offer. Mortgage rates fluctuate daily. Our default of 6.50% is a recent conventional 30-year benchmark — enter today's quoted rate from your lender for the most accurate payment estimate.
Frequently Asked Questions
Looking for a different city? Browse all cities. For Washington-specific property taxes, see the Washington Property Tax Calculator.