Adjustable-rate mortgage (ARM) rates jumped notably today, climbing 15 to 20 basis points across popular terms as lenders positioned ahead of Friday’s August jobs report. Meanwhile, 30-year fixed-rate mortgages held near 6.45 percent and 15-year fixed rates stayed around 5.75 percent. If you have been weighing an ARM against a fixed loan, today’s movement narrows the rate advantage that made ARMs attractive earlier this summer.

What the Rate Movement Means

ARM rates typically track short-term Treasury yields and expectations about Federal Reserve policy. Today’s surge reflects market anticipation that a stronger-than-expected jobs report could push the Fed to maintain higher rates longer, raising the cost of short-term borrowing. According to the Federal Reserve’s daily rate data, the 1-year Treasury yield rose sharply overnight, directly impacting ARM pricing (Board of Governors of the Federal Reserve System, 2026).

Fixed-rate mortgages, which track longer-term bonds, moved less because those markets already priced in a range of economic scenarios. The 30-year fixed rate remains elevated compared to historical averages, but the spread between fixed and adjustable rates has tightened considerably since last week.

Today’s Snapshot (as of September 4, 2026)

Rates vary by credit score, down payment, loan size, and lender, but national averages for well-qualified borrowers (740+ FICO, 20 percent down) are approximately:

  • 30-year fixed: 6.45 percent (APR 6.52 percent)
  • 15-year fixed: 5.75 percent (APR 5.82 percent)
  • 5/1 ARM: 6.10 percent (APR 6.85 percent, reflecting rate-adjustment caps)
  • 7/1 ARM: 6.20 percent (APR 6.75 percent)

Refinance rates typically run 10 to 25 basis points higher than purchase rates, and jumbo loans may carry an additional premium. Freddie Mac tracks these trends weekly in its Primary Mortgage Market Survey, which remains the benchmark for understanding rate direction over time (Freddie Mac, 2026).

Why ARMs Surged

ARM rates reset periodically based on an index (commonly the Secured Overnight Financing Rate, or SOFR) plus a margin set at origination. When short-term rates rise, new ARMs become more expensive, and the initial teaser rate climbs to reflect the lender’s higher cost of funds. As foundational texts such as Principles of Finance explain, adjustable-rate products carry interest-rate risk that shifts between borrower and lender depending on the reset schedule.

Read also: Mortgage and Refinance Rates Today in the US: Fixed Rates Drop While ARMs Hold Steady

The jobs report due later today is a key Fed input. Strong employment growth could signal that the economy does not need rate cuts, keeping ARM indexes elevated. Conversely, a weaker report might ease short-term rate pressure.

What to Do Next

If you locked a rate recently, confirm your lock expiration and terms with your lender. Rate locks typically last 30 to 60 days; if your lock expires soon and rates are climbing, consider whether a re-lock or extension makes sense before closing.

If you are shopping now, compare the total cost over your expected ownership period, not just the initial rate. An ARM saves money if you sell or refinance before the first adjustment, but a fixed-rate loan protects you if rates stay high or rise further. The Consumer Financial Protection Bureau offers a loan-comparison tool to model these scenarios side by side (CFPB, 2026).

Get rate quotes from at least three licensed lenders today. Rates change throughout the day, and different lenders price risk differently based on loan size, property type, and occupancy. Ask for the APR and an itemized Loan Estimate so you can compare both the rate and the fees.

This information is educational and reflects general market conditions as of September 4, 2026. Mortgage rates change daily and vary by borrower credit profile, loan-to-value ratio, property location, and lender. Verify current rates and terms with a licensed mortgage lender or broker for your specific situation. This article does not constitute personalized financial or lending advice.