For March 17, 2025—not today’s rates—the reported daily national averages were 6.59% for a 30-year fixed mortgage and 5.93% for a 15-year fixed mortgage. Those figures were attributed to Zillow by Norada Real Estate Investments; the underlying Zillow daily series is not independently verified here. Freddie Mac’s separate weekly survey showed both terms rising slightly between March 13 and March 20.
Mortgage rates today, March 17, 2025: reported daily averages
Norada Real Estate Investments reported the following Zillow-attributed daily national averages for March 17, 2025:
| Mortgage term | Reported rate | Attribution and cadence |
|---|---|---|
| 30-year fixed | 6.59% | Zillow daily national average, as reported by Norada Real Estate Investments on March 17, 2025; the underlying Zillow series was not independently verified. Source |
| 15-year fixed | 5.93% | Zillow daily national average, as reported by Norada Real Estate Investments on March 17, 2025; the underlying Zillow series was not independently verified. Source |
These are historical national averages, not a live rate update or an offer to a particular borrower.
How Freddie Mac’s weekly figures compare
Freddie Mac’s Primary Mortgage Market Survey (PMMS) uses a weekly cadence, so its readings are a separate benchmark rather than a like-for-like confirmation of a single day’s Zillow-attributed averages.
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| PMMS date | 30-year fixed | 15-year fixed |
|---|---|---|
| March 13, 2025 | 6.65% | 5.80% |
| March 20, 2025 | 6.67% | 5.83% |
Freddie Mac’s weekly averages increased slightly for both terms between those two dates. The March 13 figures are in its PMMS archive, and the March 20 figures are in its March 20 release. The different survey sources and measurement periods explain why this weekly comparison need not match the March 17 daily report.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the rate averages mean for a borrower
Freddie Mac’s benchmark reflects a defined borrower profile
Freddie Mac says PMMS focuses on conventional, conforming, fully amortizing home-purchase loans for borrowers with 20% down and excellent credit. It is a market benchmark for that profile, not a rate guaranteed to every applicant. Freddie Mac’s survey description explains the scope.
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- CONFIDENTLY AND EASILY SOLVE: Clients' financial questions whether they're buyers, sellers, investors or renters. Increase your perceived professionalism as a new agent, experienced broker or seasoned loan officer. Close more home sales and impress your clients with fast, accurate answers to all their real estate finance questions from PITI Payments to IRR, NPV and Cashflows
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Compare offers beyond the headline rate
A national average cannot tell you which mortgage is cheapest for your situation. When comparing actual lender offers, consider:
- Whether the loan is fixed-rate or adjustable-rate, and the term.
- The quoted interest rate alongside points, fees, and APR.
- The monthly principal-and-interest payment and the total interest you expect to pay during the time you plan to keep the loan.
- Your eligibility and loan type, since borrower and property details affect available terms.
A lower advertised interest rate alone does not establish that a loan costs less once points and fees are included.
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