How Fed Rate Changes Affect Real Estate Investors

What the Fed Actually Sets

The Federal Open Market Committee sets a target range for the federal funds rate. As of September 2026 that range is 3.75% to 4.00%. It is an overnight rate. Anything priced off overnight or short-term rates follows it closely.

The clearest example is the prime rate, which banks set at the top of the fed funds range plus 3 points. When the Fed cut on September 18, 2024, prime went from 8.50% to 8.00% the next day. Today it sits at 7.00% against a 4.00% upper bound. Debt tied to prime or to SOFR, the overnight rate lenders now use in place of LIBOR, reprices with the Fed:

• HELOCs, including one on a primary home used to fund a down payment
• Construction and bridge loans, which are usually floating
• Adjustable-rate mortgages, at each reset after the fixed period
• Business lines of credit

A 30-year fixed mortgage is a different instrument. The lender is committing money for up to 30 years, and most of those loans are sold into mortgage-backed securities. Its price follows long-term yields, and the usual reference is the 10-year Treasury. The mortgage rate is roughly the 10-year yield plus a spread.

Four Episodes From the Data

Mortgage rates are Freddie Mac's weekly survey, so the nearest weekly reading is shown. Sep 18, 2024 uses the Sep 12 survey.

2022, rates moved together. The Fed raised its target 2.75 points between March and October, and mortgage rates rose 2.92 points. This is the episode most people remember, and it is the one that makes the Fed look like it controls mortgage rates.

2023, the Fed stopped and mortgages kept going. The last hike came in July 2023. Over the next three months the Fed did nothing, the 10-year rose 0.85 points, and the mortgage rate rose 0.98 points to 7.79%, the highest weekly reading from 2019 to today.

2024, the Fed cut and mortgages rose. By the day of the first cut the 10-year had already fallen from 4.70% in April to 3.70%, because the bond market had spent months pricing the cuts in. Mortgage rates had fallen with it, from 7.22% in May to 6.20%. After the cut, the 10-year climbed back to 4.61% and the mortgage rate to 7.04%, while the Fed cut two more times.

2026, a small hike and a large move. Since January the Fed has raised its target by a quarter point. The 10-year is up just over a point, and the mortgage rate is up 0.97 points.

The spread between the two long rates moves as well. In December 2021 the mortgage rate sat 1.59 points above the 10-year. In October 2023 the gap was 2.93 points. In September 2026 it is 1.85. So even a correct forecast of the 10-year does not pin down the mortgage rate.

What a Rate Change Does to the Duplex

The house example is the $425,000 duplex: $3,800 a month in rent, 5% vacancy, $17,100 of operating expenses, NOI of $26,220, a 6.2% cap rate. Financed at 20% down, the loan is $340,000 over 30 years, and $97,000 of cash goes in once $12,000 of closing costs is added.

The rate enters every number below the NOI line through one figure, the loan constant:

Loan constant = Annual debt service ÷ Loan
At 7%:  $27,144 ÷ $340,000 = 7.98%

Here is the same duplex at four rates from the table above, plus the 7% the calculators use:

Nothing about the building changes across those rows. The rent, the vacancy, the expenses and the NOI are identical. The rate alone moves cash flow by $11,898 a year between the first row and the last, and DSCR from a number any lender accepts to one most lenders decline.

Two more figures show how the rate caps what a financed buyer can pay:

Largest loan  = (NOI ÷ 1.25) ÷ (12 × payment per $1 of loan)
Zero-cash-flow price = NOI ÷ (12 × payment per $1 of loan × 0.80)

At 3.11%, a buyer putting 20% down could pay $638,800 for this NOI and still break even. At 7.79%, the same buyer breaks even at $379,774. The DSCR calculator runs the lender's side of this for any NOI, loan and rate.

Where Rates Meet Value

Value on an income property is NOI divided by a cap rate:

Value = NOI ÷ Cap rate
$26,220 ÷ 6.17% = $425,000
$26,220 ÷ 6.5% = $403,385
$26,220 ÷ 7.0% = $374,571

Nothing in that formula mentions interest rates. The link runs through the buyers. Most buyers of small rentals finance the purchase, and the second table above is the ceiling their loans put on price. When the loan constant sits above the cap rate, every borrowed dollar costs more than it earns. That is negative leverage, and at 7% on this duplex the constant is 7.98% against a 6.2% cap rate.

A buyer facing that gap has three options. Pay less, which pushes cap rates up and values down. Put more cash in, which lowers the cash-on-cash return. Or accept thin or negative cash flow as the price of expected rent growth and appreciation. Which of the three wins in a given market decides how much of a rate move reaches prices, and it is why cap rates do not move point for point with the 10-year. On the duplex, a move from a 6.17% cap to 7.0% takes $50,429 off the value with the building unchanged.

The cap rate calculator shows value at any cap rate, and what is a good cap rate has the survey ranges by property type.

Where the Fed Rate Does Reach a Rental Investor

Floating debt. A HELOC on a primary residence priced at prime reprices within days of a Fed move. On $50,000 drawn for a down payment, each quarter point is $125 a year of interest. Bridge and construction loans in a BRRRR project follow the same path, which makes the holding period before refinance a rate bet as well as a schedule.

ARM resets. An adjustable-rate loan resets off a short-term index, so the Fed's path matters at each adjustment date, subject to the loan's caps.

The yield on cash. Money market funds and Treasury bills pay close to the fed funds rate. That is the return the down payment earns if it stays in the bank. At a 4.00% target, cash sitting in T-bills earns about 4% with no vacancy and no roof. The duplex at 7% earns −1.0% cash-on-cash. The case for buying it rests on principal paydown and appreciation, which the ROI calculator adds back.

Refinancing. A fixed-rate refinance, including the one at the end of a BRRRR, prices off the 10-year, not the Fed. A Fed cut makes a refinance cheaper only if long rates cooperate, and in late 2024 they didn't.

The Trap

The trap is timing a purchase or a refinance around the Fed's calendar. By the time the Fed acts, the bond market has usually priced the move in. The 10-year fell a full point in the five months before the September 2024 cut and rose almost a point in the four months after it.

When I run a deal, I run it at the rate I can lock today, not the rate a forecast promises. A deal that only works at next year's rate depends on something nobody controls.

FAQ

Do Fed rate cuts lower mortgage rates?

Not reliably. Fixed mortgage rates follow the 10-year Treasury plus a spread. The Fed cut by a point from September to December 2024, and the 30-year average rose from 6.08% to 7.04% by mid-January 2025.

Do lower interest rates raise property values?

Through buyers, not directly. Value is NOI divided by cap rate. Lower rates raise the price a financed buyer can pay for the same NOI. On the duplex, the zero-cash-flow price at 20% down is $410,528 at 7% and $452,633 at 6.06%. Whether sellers get that price depends on how many buyers are competing for the same property.

Which interest rate matters most for a rental property?

The one on the debt. For a 30-year fixed loan, that is the long-term rate at the time of locking. For a HELOC, bridge loan or ARM, it is the short-term index the loan floats on, which tracks the Fed.

How much does a 1% rate change affect cash flow?

On a $340,000 30-year loan, going from 7% to 8% adds $2,793 a year of debt service. On the duplex that takes DSCR from 0.97 to 0.88, and all of it comes out of cash flow. The DSCR loans guide covers what that does to loan approval.

Does the Fed affect rents?

Only indirectly, through the economy, and with a lag no one measures precisely. Rent depends on local supply and demand. The rate moves a buyer's cost of owning the property, not what a tenant will pay.

This guide is educational, not financial advice. Rates quoted are historical survey averages from FRED. A lender's quote for a specific loan will differ.