On September 16, 2026, the Federal Reserve raised its benchmark rate by a quarter point, its first increase since July 2023. If you’re buying a home in Indiana, here’s the short answer: the Fed does not set mortgage rates, and a Fed hike does not automatically raise them. In fact, the day after this hike, the bond market that actually drives mortgage pricing moved down. Mortgage rates did rise this week, but not for the reason most headlines implied. Here’s what really happened and what it means for your loan.
What the Fed actually did
The Federal Open Market Committee raised the federal funds target range by 25 basis points, to 3.75%-4.00%. The vote was unanimous, 12-0. Chair Kevin Warsh pointed to inflation that remains elevated, with core inflation running hotter than expected in August and energy prices climbing.
Alongside the decision, the Fed published its quarterly projections. Most participants expect at least one more increase before the end of the year.
That’s a meaningful policy shift. But it’s a shift in a rate that has nothing directly to do with your mortgage.
Does the Federal Reserve set mortgage rates?
No. The federal funds rate is what banks charge each other to borrow money overnight. It is a one-day rate between financial institutions. Your mortgage is a thirty-year loan to a household. Those are different products, priced by different markets, on completely different time horizons.
The Fed’s rate does directly drive some consumer borrowing. Credit card APRs, home equity lines of credit, and other variable-rate debt tend to move within a statement cycle or two of a Fed decision, because they’re explicitly tied to the prime rate, which tracks the fed funds rate.
Fixed mortgage rates don’t work that way.
What actually drives mortgage rates
Mortgage rates track the 10-year Treasury yield far more closely than anything the Fed announces.
The reason is structural. When you take a 30-year mortgage, your lender usually doesn’t hold that loan. It’s packaged into a mortgage-backed security and sold to investors. Those investors are choosing between buying mortgage bonds and buying government bonds. The 10-year Treasury is the benchmark they compare against. So mortgage rates end up sitting a spread above the 10-year yield, and they move when it moves.
And the 10-year yield moves on expectations: where investors think inflation and Fed policy are heading over the coming years. Not on where the Fed just put its overnight rate.
That distinction explains the behavior that confuses people most: mortgage rates frequently move before a Fed meeting, as the market prices in what it expects. By the time the Fed actually acts, the move has often already happened. And sometimes rates move the opposite direction afterward.
This week was a textbook example
Watch the sequence:
- Before the meeting, the 10-year Treasury yield climbed toward 5% as investors priced in a hike they were already confident was coming.
- Wednesday, after the Fed hiked, the 10-year pushed above 5.01%, a 19-year high.
- Thursday, the day after the increase, the 10-year yield fell back to just under 5%. The 2-year note eased to about 4.73%. The 30-year bond declined as well.
The Fed raised rates, and the benchmark that governs mortgage pricing went down the next day. Analysts attributed the decline to the unanimous vote and Warsh’s inflation comments. A clear, credible signal reassured bond investors, and that credibility is worth more to the long end of the curve than the quarter point itself.
So when someone tells you “the Fed raised rates, so mortgage rates are going up,” the honest answer is: that’s not how the mechanism works, and this week is the proof.
Then why did mortgage rates rise this week?
They did rise. Freddie Mac’s Primary Mortgage Market Survey for September 17, 2026 put the 30-year fixed at 6.95%, up from 6.76% the week before. A year earlier it averaged 6.26%. The 15-year fixed came in at 6.26%, up from 6.09%, versus 5.41% a year ago.
Two things explain that jump, and neither is “the Fed hiked on Wednesday.”
First, the survey measures the run-up, not the aftermath. Freddie Mac collects lender quotes Monday through Wednesday and publishes Thursday. The 9/17 figure largely captures pricing from before and during the decision, the period when yields were climbing toward their 19-year high in anticipation. Thursday’s pullback isn’t in that number at all.
Second, the market had been repricing for weeks. Persistent inflation, rising energy costs, and hawkish signals from the Fed had been pushing yields up well before the meeting. The hike confirmed a story bond investors had already written.
This is also why a survey average and your personal quote rarely match. The survey lags, and it assumes a specific borrower profile. That’s covered in more depth in our guide on the difference between a rate and an APR.
What this means for Central Indiana buyers
Translating percentages into payments matters more than the percentages themselves.
The median single-family sale price across MIBOR’s 17-county Central Indiana service area was $327,250 in August 2026. Financing that median home at this week’s 6.95% average rather than last year’s 6.26% costs roughly $119 more per month in principal and interest, for the identical house, purely because of the rate. On a $300,000 loan, the year-over-year gap is closer to $137 a month.
The local market context cuts in a more encouraging direction, though:
- Active inventory reached 6,941 single-family listings, up 14% year over year, a 2.5-month supply versus 2.1 a year ago.
- Median days on market stretched to 23, up from 17 last August.
- The median price rose just 2.6% year over year, and actually slipped slightly from July.
- Sellers received 98.2% of asking price on the typical listing.
So buyers face a higher rate, but also more homes to choose from, more time to decide, and more room to negotiate than at any point in the last several years. Those partly offset each other, and the negotiating room is something a rate drop wouldn’t give you.
What should you do if you’re buying in the next 90 days?
Get re-run if your pre-approval is more than a few weeks old. A pre-approval issued last spring reflects a rate that no longer exists. Same income, same credit, smaller maximum purchase price. Finding that out before you write an offer is free; finding out after is expensive.
Don’t wait for the Fed to “fix” this. The projections released with this decision point toward at least one more increase, not a reduction. Buying on the theory that rates will fall shortly is a bet against the Fed’s own published forecast. Prices in Central Indiana, meanwhile, are still drifting up.
Consider a temporary buydown. When rates rise, seller-paid buydowns get more valuable, and with homes sitting 23 days on average, more sellers will discuss one. A buydown often delivers far more monthly relief to a buyer than an equivalent price reduction. See how temporary rate buydowns work.
Understand your lock before you need it. In a market moving this fast, lock timing is a real decision with real dollars attached, walked through in our mortgage rate lock guide.
Remember that you refinance a rate, but you live with a price. Rates can be changed later. The purchase price, and the competition you face for the house, cannot.
Frequently asked questions
Does the Fed control mortgage rates?
No. The Federal Reserve sets the federal funds rate, an overnight lending rate between banks. Fixed mortgage rates track the 10-year Treasury yield, which moves on investor expectations for inflation and future Fed policy. The Fed influences mortgage rates indirectly, through those expectations, but does not set them.
Will mortgage rates go up after a Fed rate hike?
Not necessarily, and often not immediately. Markets usually price in an expected hike beforehand, so the move frequently happens before the announcement. After the September 16, 2026 hike, the 10-year Treasury yield actually fell the following day. What matters more than the decision is whether the Fed’s guidance about the future surprises investors.
Why did my mortgage quote go up if the Fed’s move was already expected?
Mortgage pricing responds to the bond market continuously, not to Fed announcements on a schedule. Rates had been climbing for weeks on inflation data and hawkish signals. Also, weekly rate surveys lag by several days, so a published average may reflect a different moment than your quote.
What is the difference between the federal funds rate and a mortgage rate?
The federal funds rate is an overnight rate between banks, currently targeted at 3.75%-4.00%. A mortgage rate is the long-term rate on a loan to a homebuyer, currently averaging 6.95% for a 30-year fixed. They serve different markets and routinely move independently of one another.
Should I wait for mortgage rates to drop before buying a house in Indiana?
That’s an individual decision, but it’s worth knowing what you’d be waiting on. The Fed’s own September 2026 projections point toward at least one additional increase this year rather than a decrease. Meanwhile Central Indiana inventory is up 14% year over year and homes are taking longer to sell, so buyers currently have more selection and negotiating leverage than they’ve had in years. You can refinance a rate later; you can’t re-buy the house at today’s price.
Does a Fed rate hike affect my existing mortgage?
If you have a fixed-rate mortgage, no. Your rate and payment are locked for the life of the loan. If you have an adjustable-rate mortgage or a home equity line of credit, yes, those are tied to indexes that follow the Fed more closely and can adjust.
Let’s talk through your numbers
If you’re buying in Indianapolis, Carmel, Fishers, Noblesville, Westfield, or anywhere in Central Indiana, the useful conversation isn’t about what the Fed did. It’s about what your actual payment looks like at today’s pricing, and what a buydown or a different loan structure could do for it. Call or text me at (317) 603-0912 and I’ll run real numbers for your situation, usually the same day. You can also see where rates stand right now or start your application online.
Realtors: this is the explanation I give your buyers when a Fed headline rattles them. More on how I work with agent partners.
Greg Rank is a mortgage broker at Channelwood Mortgage in Carmel, Indiana. Greg Rank, NMLS #138276, licensed in Indiana. Channelwood Mortgage Inc., NMLS #129852, also licensed in Florida. This article is general education, not personalized mortgage or investment advice or a loan offer. Rates cited are from Freddie Mac’s Primary Mortgage Market Survey of September 17, 2026 and change weekly; Treasury yields and Federal Reserve policy figures are as of September 16-17, 2026. Payment comparisons are illustrative, reflect principal and interest only, and exclude taxes, insurance, and mortgage insurance; your actual terms depend on credit, down payment, property, and program guidelines.