Published:
March 6, 2020
Last updated:
September 23, 2026
6 Factors That Affect Mortgage Rates in Washington

Key Takeaways

  • Higher credit scores and larger down payments can improve mortgage pricing and lower total borrowing costs.
  • Fixed-rate loans offer stable payments, while adjustable-rate loans may start lower but can change over time.
  • Mortgage rates also vary by loan program, so comparing conventional, FHA, and VA options can matter.
  • Inflation and broader economic conditions can move mortgage rates even when your financial profile stays the same.
In This Article

Mortgage rates in Washington are affected by both borrower-specific factors and broader market conditions. Some of these factors—such as your credit profile, down payment, and loan structure—may be things you can improve before you apply, while others—such as inflation and economic conditions—are largely outside your control.

If you are considering a home purchase in Washington State, it helps to understand how these six factors can influence the rate you may be offered. Knowing which variables you may be able to change, and which ones you can only monitor, can help you decide whether to apply now, strengthen your qualifications first, or compare different mortgage options.

Your goal is to score the lowest rate possible, but there are many things that influence the rate you can get, including the following.

1. Your Credit Score

Your credit score is instrumental in your ability to secure a mortgage in WA. But not only that, but it’s also a critical element that comes into play as far as the interest rate you will be charged on your mortgage is concerned.

Credit scores are important factors that lenders use when they determine whether or not to approve loan applications, no matter what the loans are for, and this includes mortgages. If your credit score is on the lower end of the scale, you could be faced with a higher interest rate on your mortgage. That means your loan amount will be more expensive by the end of the term because more will be paid out in interest.

On the other hand, a higher credit score will usually translate into a lower interest rate, which equates to a lower overall loan amount by the end of the term. That’s because there’s less risk associated with a borrower with a higher score, and mortgage lenders will reward less-risky borrowers with a lower rate.

If your credit score is lower than it could or should be, consider taking some time to give it a boost before you apply for a mortgage in WA. You can do this by:

  • Paying all your bills on time
  • Keeping your credit card balances low
  • Making more than minimum credit card payments
  • Not applying for too many credit lines or loans within a short window frame
  • Keeping old credit accounts open

Related: How to Check Your Credit Score for Free

2. Down Payment Amount

Generally speaking, a lower down payment amount may be associated with a higher interest rate, while a larger down payment may improve your pricing. That’s because lenders often view a borrower who puts more money down as presenting a lower overall risk, though the outcome can vary by loan type and lender pricing.

By putting more money down toward your Washington State home purchase upfront, you’ll start with more equity in the property and a smaller loan balance.

A larger down payment also means a lower loan amount, which can improve your borrowing profile. By increasing your down payment amount and lowering your loan amount, you can effectively get your loan-to-value ratio (LTV) within a range that lenders typically like to see.

Your LTV is a measure of the loan amount relative to the value of the property. The lower this ratio is, the better, and a bigger down payment can help get you there. In turn, that may improve the rate or pricing options available to you, depending on the mortgage program and the lender.

View WA State Mortgage Rates

3. Type of Interest Rate

You can get one of two different types of interest rates on your WA mortgage: fixed-rate and adjustable-rate. A fixed-rate mortgage comes with an interest rate that remains unchanged over the loan term. That means your payments will be more predictable as the rate will not change after you lock it in, no matter what happens to rates in the open market. As long as you lock in a rate with a fixed-rate mortgage, that’s the rate you’ll pay until the term ends or until you either refinance the mortgage or sell your Washington State home.

On the other hand, adjustable-rate mortgages come with rates that may fluctuate over various intervals throughout the mortgage term. While these types of home loans usually come with an initial fixed-rate period with rates that are usually lower than that of fixed-rate mortgages, the rate will typically go up or down at each interval based on the market. So, if your rate is not locked down, it could fluctuate throughout the mortgage term.

Depending on the current market, either type of interest rate may work best. For example, if rates are expected to increase in the near future and you like the idea of a stable rate, a fixed-rate mortgage may be best. But if rates are expected to decrease in the near future or you expect to sell your home before the initial fixed-rate period ends, an adjustable-rate mortgage may work well for you.

4. Mortgage Program Type

There are a few different loan programs available in Seattle, Kirkland, and Bellevue that may come with different interest rates. These include:

Different lenders will offer different mortgage products. Some may offer only one or a couple, while others may offer all types. Regardless, the type of loan program you choose may come with different interest rates, and each loan program comes with different eligibility requirements.

Mortgage Rate vs. APR

When you compare mortgage offers, look at both the interest rate and the APR. The interest rate tells you the cost of borrowing the principal, while the APR gives you a broader view of the loan’s cost by factoring in certain fees and charges.

That means two loans can show similar rates but different APRs. Looking at both can help you compare quotes more accurately and understand whether one offer is truly less expensive than another.

Get an Instant Mortgage Rate Quote Today

5. Inflation

Inflation can affect borrowing conditions in Washington State and nationwide, including mortgage interest rates.

When inflation rises, the purchasing power of money declines over time. In that environment, mortgage pricing may also move because lenders and markets generally seek returns that keep pace with inflation.

For borrowers, the key point is that inflation is a broader market force. Even if your personal finances stay the same, changes in inflation can still influence the mortgage rates available when you shop or lock your loan.

6. Economic Growth in WA and the Nation as a Whole

Broader economic conditions can also influence mortgage rates. Factors such as employment, wages, consumer spending, and overall economic output can affect how mortgage markets and lenders price loans.

When the economy appears stronger, demand for borrowing may increase, and that can put upward pressure on mortgage rates. When the economy slows, borrowing demand may weaken, which can put downward pressure on rates.

The main takeaway for Washington borrowers is that mortgage pricing is shaped not only by your application, but also by conditions in the wider economy. Those market forces can shift even when your credit score, income, and down payment stay the same.

How to Think About Factors You Can Control vs. Factors You Can’t

Before applying, focus first on the factors you may be able to improve, such as your credit profile, down payment, and the type of loan or rate structure you choose. If those areas are not where you want them to be yet, it may make sense to spend time strengthening your qualifications or comparing different mortgage programs.

At the same time, keep an eye on factors you cannot control, such as inflation and broader economic conditions. If your qualifications are already strong, the decision may come down to whether you want to apply now, monitor the market for a better opportunity, or compare loan structures to find the best fit for your goals.

If you’re considering buying a house in Washington State, be sure to speak with a seasoned lender before you start the process, and Sammamish Mortgage is always on hand to help.

Related: Real Estate Outlook in WA State

Have Questions About Mortgages?

Sammamish Mortgage can help. We serve clients across Washington, Idaho, Colorado, Oregon, and California. Since 1992, we’ve been providing several mortgage programs and products with flexible qualification criteria to borrowers across the Pacific Northwest. Visit our website to get an instant rate quote or to use our online mortgage calculator. Or, reach out to us if you are ready to get pre-approved for a mortgage.

FAQs

What factors affect mortgage rates in Washington?

Mortgage rates in Washington are influenced by borrower-specific factors such as credit score, down payment, loan-to-value ratio, loan program, and rate structure, as well as broader market forces like inflation and overall economic conditions.

How are 30-year mortgage rates determined?

A 30-year mortgage rate is shaped by a mix of borrower qualifications and market conditions. Lenders may consider factors such as credit profile, down payment, loan type, and whether the loan has a fixed or adjustable rate, while inflation and the broader economy can also affect pricing.

What has the biggest impact on mortgage rates for a borrower?

Credit score is one of the most important borrower-specific factors because it affects how much risk a lender sees in the application. A stronger credit profile will usually help a borrower qualify for better pricing, while a lower score may lead to a higher rate.

Does a larger down payment always lower my mortgage rate?

Not always, but a larger down payment may improve your pricing. Putting more money down usually reduces your loan amount and loan-to-value ratio, which lenders often view more favorably, although the result can vary by lender and loan program.

How does an adjustable-rate mortgage affect my starting rate in Washington?

An adjustable-rate mortgage often starts with a lower initial rate than a fixed-rate mortgage. After the initial fixed period ends, the rate may rise or fall at scheduled intervals based on market conditions, so the payment can become less predictable over time.

Do FHA, VA, and conventional loans usually come with different mortgage rates?

Yes. Different mortgage programs can come with different rates and qualification standards. Conventional, FHA, and VA loans are separate products, and the pricing available can vary based on the lender and the details of the loan.

What is the difference between a mortgage rate and APR?

The mortgage rate reflects the cost of borrowing the principal balance. APR gives a broader view of the loan’s cost by including the interest rate along with certain fees and charges, which can make it more useful when comparing lender offers.

What causes mortgage rates to go down?

Mortgage rates may move lower when broader economic conditions weaken and borrowing demand softens. Lower inflation pressure can also help reduce upward pressure on mortgage pricing, although market movements are never guaranteed.

Can inflation and the economy change mortgage rates even if my finances stay the same?

Yes. Inflation and broader economic conditions can influence mortgage rates regardless of whether your credit score, income, or down payment stay the same. Those market forces can change the rates available when you shop or lock your loan.

What factors affecting mortgage rates can I control before applying?

The main factors you may be able to improve before applying are your credit profile, down payment amount, loan program choice, and rate structure. Inflation and the broader economy are outside your control, so borrowers usually focus first on strengthening the factors they can change.