At a Glance:

• The Federal Reserve lowered the federal funds rate by 0.25% to a 4.00%–4.25% range on Sept. 17, 2025—the first cut this year.^1,2
• In general, mortgage rates do not directly correlate with the Fed’s policy rate. Instead, they’re more closely tied to the 10 year U.S. Treasury and economic factors.²
• Products tied to short term benchmarks—like ARMs and HELOCs—are more likely to reflect the Fed’s move, though timing depends on reset schedules and billing cycles.^5,6
• The Fed’s projections leave room for additional cuts in 2025, but mortgage pricing will still depend on inflation and labor data.

Last week, the Federal Reserve announced a shift in monetary policy, cutting its benchmark interest rate by 25 basis points to 4.0% to 4.25%.1 This is the Fed's first rate cut of 2025.² The decision reflects ongoing assessments of inflationary pressures and the labor market, as policymakers seek to foster a more favorable borrowing environment.

While the Fed doesn’t set mortgage rates, its decision can ripple through different parts of mortgage and home equity financing in different ways. We’ve broken down a few of these impacts below.

Fixed-Rate Mortgages

If you’re tracking the most common mortgage financing type—the 30‑year fixed mortgage—remember that the bond market matters more than the Fed’s overnight rate. Lenders price fixed mortgages off longer‑term yields (especially the 10‑year U.S. Treasury) and investor views on inflation and growth.³

“The headline is the Fed adjusted a short‑term rate,” said Brett Hively, Senior Vice President and Mortgage Capital Markets and Financial Strategist at Ameris Bank. “That can filter through to some mortgage products, but it doesn’t flip a switch on 30‑year fixed loans.”

“It’s not uncommon to see fixed rates drift lower before a Fed meeting if markets expect easing, and we’ve also seen them rise after a cut as markets absorb the news or when economic indicators are stronger than expected,” Hively noted.

This was true for last week’s Fed meeting. On Tuesday, Sept. 15, prior to the Fed announcement, the average rate for a conforming 30-year fixed mortgage was 6.17%, the lowest mark in nearly a year. On Thursday, the day after the announced cut, the average rate had risen to 6.26%.⁴

Adjustable Rate Mortgages (ARMs)

ARMs are commonly tied to a short term market index (often SOFR) that tends to move in the same direction as the Fed’s short term rate. After a Fed cut, new ARM pricing can improve because those indexes often ease as well.⁵ 

For current homeowners who have an ARM, nothing changes the day of the announcement. Instead, your loan updates on its next reset date. Since the reset also uses a short term index, borrowers with upcoming resets may see a lower rate than they would have without the Fed’s rate cut, subject to the loan’s margin and caps.

“For current homeowners with an ARM loan, the practical moment of change is the reset date, not the day of the Fed announcement,” Hively said.

Home Equity Lines of Credit (HELOCs)

Most HELOCs are priced as prime plus a margin, and the prime rate generally moves soon after the Fed adjusts policy.⁶ That means existing HELOC payments often reflect changes on the next billing or adjustment cycle, depending on loan terms. 

“As prime moves lower after a Fed cut, HELOCs can become more attractive for homeowners who want flexible access to equity that they have built in their property,” Hively said. "This can potentially lower monthly payments for home renovations and upgrades.”

Home Equity Loans (HELoans)

Home equity loans are typically fixed‑rate. If you already have one, the Fed’s move doesn’t change your current note rate. For prospective borrowers, rates may move, though these are generally slower to adjust than a HELOC.

What to Watch Next

The Fed’s latest projections point to two more potential cuts this year, but officials stressed those decisions will be data‑dependent.⁷ Because mortgage rates change daily, the same inflation and jobs reports the Fed watches often move mortgage pricing in real time, not just on the days the Fed meets.

Hively said that predicting a rate cut and potential mortgage rate movement can be challenging, and that home shoppers and real estate investors might want to rethink their buying strategies. 

"People and families who have the financial ability to buy a home at the current interest rates may find it more beneficial to proceed now rather than trying to time the market or wait for a result that may not occur."


Sources:
¹ https://www.federalreserve.gov/newsevents/pressreleases/monetary20250917a.htm
² https://www.usatoday.com/story/money/2025/09/17/federal-reserve-september-rate-cut-live-updates/86178612007/
³ https://apnews.com/article/mortgage-rates-housing-federal-reserve-rate-cut-9351815c29cea1e27b531dec88d3e4da
⁴ https://www2.optimalblue.com/obmmi
⁵ https://www.cbsnews.com/news/fed-rate-cut-mortgage-impact-september-2025/
⁶ https://www.wsj.com/buyside/personal-finance/mortgage/fed-rate-decision-september-2025-savings-cds-mortgages
⁷ https://www.federalreserve.gov/monetarypolicy/fomcprojtabl20250917.htm

The opinions voiced in this material are for general information only and are not intended to provide specific advice or recommendations for any individual. Ameris Bank does not endorse nor is affiliated with the companies listed in this article.