Inflation vs Mortgage Rates
Sometimes they move together. Sometimes they don't. That gap matters for you.
Over the past year, mortgage rates have gone from 6.8% to 6.0%. Five years ago, you would have gotten a 2.8% rate, and the gap between your rate and inflation (3.3%) is close to the 3.7% historical norm.
Current Rate
6%
30yr fixed
Current CPI
2.7%
year-over-year
Spread
+3.3%
rate minus CPI
Avg Spread
3.7%
since 1971
Last updated March 12, 2026
About This Data
Your mortgage rate is really two things stacked together: the real cost of borrowing, plus an inflation premium. This chart puts CPI inflation (the dashed line) next to the 30-year fixed rate (the gold line) so you can see that relationship for yourself.
The gap between the two lines is what matters. Historically, rates run about 3% to 4% above inflation. When that gap is wider, lenders are charging you extra for uncertainty. When it's narrower, borrowing is relatively cheap in real terms.
In the 1970s and early 1980s, both lines surged as runaway inflation forced the Fed to raise rates dramatically. The 2010s saw historically low inflation and rates. If you're wondering about today, the market is still working through a post-pandemic hangover where inflation has cooled from its 2022 highs but sits above the Fed's 2% target.
Frequently Asked Questions
Do mortgage rates follow inflation?
Loosely, yes. Rates reflect inflation expectations, Federal Reserve policy, and bond market demand. When inflation rises, rates tend to follow, but the gap between them can vary a lot depending on how much uncertainty is in the market.
How does CPI affect mortgage rates?
CPI measures inflation, and inflation erodes the value of fixed-rate investments like the mortgage-backed securities that fund your loan. When inflation goes up, investors demand higher returns to compensate, which pushes mortgage rates higher. When inflation cools, rates tend to ease.
What is a normal spread between inflation and mortgage rates?
Historically, the 30-year fixed rate runs about 3% to 4% above CPI inflation. When the gap is wider than that, you're paying extra for uncertainty. When it's narrower, borrowing is relatively cheap in real terms.
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