Mortgage interest rates fell on May 23, 2026, led by a 12-basis-point drop in the 30-year fixed rate to 6.34% in Zillow lender marketplace data. For buyers and refinance borrowers, that move trimmed the benchmark rate used in daily comparisons, while national averages still left fixed and adjustable loans separated by clear monthly-payment tradeoffs.
Zillow Rates Move Lower
The 30-year fixed mortgage rate finished at 6.34%, down from the prior day by 12 basis points (hundredths of a percent). That product remains the standard for borrowers who want lower monthly payments and a predictable payment schedule, even if the total interest cost runs longer than shorter-term loans.
The 15-year fixed rate fell 7 basis points to 5.90% on the same day. It carries a lower rate than the 30-year fixed, but the shorter payoff period pushes monthly payments higher, which narrows the pool of borrowers able to use it without stretching cash flow.
5/1 ARM at 6.29%
The 5/1 ARM dropped 19 basis points to 6.29%, the largest move in the daily update. Because adjustable-rate mortgages can reset later, the lower starting rate can appeal to borrowers focused on near-term costs rather than long-run payment stability.
Mortgage rates in the update are national averages rounded to the nearest hundredth, so they are best read as a daily benchmark rather than a quote tied to one borrower. Mortgage refinance rates are often higher than purchase rates, although that is not always the case, which leaves the spread between buying and refinancing as part of the day-to-day decision for borrowers comparing options.
What Borrowers See Next
6.34% on the 30-year fixed gives shoppers a lower reference point than the prior day, but it still leaves the decision split between payment size, term length, and rate certainty. A borrower weighing the 15-year fixed against the 30-year fixed has to trade lower interest for a larger monthly bill, while the 5/1 ARM offers the lowest starting rate in this set but not the same payment certainty over time.
