Loan Products · March 30, 2025
What Affects Mortgage Rates? The 8 Key Factors
Mortgage rates are not random — they are driven by specific economic and personal factors. Understanding them helps you time decisions and optimize your application.
Mortgage rates change daily but they are driven by understandable forces. Here are the eight factors that most affect the rate you will be offered.
1. The 10-Year Treasury Yield
The 30-year fixed mortgage rate tracks the 10-Year Treasury closely. Historically mortgage rates run 1.5-2.5% above the 10-Year Treasury. Watch treasury yields as a leading indicator.
2. The Federal Reserve and Monetary Policy
The Fed does not set mortgage rates directly but influences them through the federal funds rate, which affects short-term borrowing costs and inflation expectations.
3. Inflation
When inflation is high, lenders demand higher rates to compensate for the erosion of purchasing power on future payments. The Fed's 2% inflation target is what allows manageable long-term rates.
4. Your Credit Score
The biggest personal factor. The difference between a 620 and 760 score can mean 0.5%-1.5% on your rate — tens of thousands of dollars over 30 years.
5. Loan-to-Value Ratio
Lower LTV means lower rate. Lenders take less risk with more equity. Pricing tiers are most pronounced at 60%, 70%, 75%, 80%, and 95% LTV.
6. Loan Type and Program
VA loans consistently offer the lowest rates. FHA, conventional, USDA, and jumbo each price differently based on program risk characteristics.
7. Property Type
Investment properties and second homes carry rate premiums of 0.5-0.875% over primary residences.
8. Rate Lock Period
Shorter locks (15-30 days) offer better rates than longer locks (45-60 days).
HMS helps every borrower optimize these factors. Call 309-222-8286.