The quick read: Yes, but through two different channels, and the lender type decides which channel reached your quote. The Federal Open Market Committee's statement of September 16, 2026 says the Committee decided "to raise the target range for the federal funds rate by 1/4 percentage point to 3-3/4 to 4 percent," and the Fed's implementation note made the change effective September 17, 2026. Floating multifamily loans felt it directly: the Secured Overnight Financing Rate (SOFR) on FRED went from 3.64% on September 15, 2026 to 3.90% on September 30, 2026. Fixed agency (GSE), bank and life-company quotes follow Treasury yields, which the market sets: the 10-year Treasury yield on FRED went from 5.00% on September 15 to 5.29% on September 30, after dipping to 4.94% on September 17, the day the hike took effect.
How did each multifamily lender type's index move in September 2026?
Every index a multifamily lender commonly prices off rose between September 15 and September 30, 2026 on FRED's daily series, but the floating index moved with the policy rate while the Treasury yields behind fixed quotes moved on the market's own schedule. The table reads each level from FRED and prints its observation date.
The index row describes common practice in multifamily lending. Each term sheet names its own index and term, so read yours before relying on a row.
| Attribute | Agency (GSE) fixed | Bank fixed | Bank floating | Debt fund / bridge | Life company |
|---|---|---|---|---|---|
| Attribute Index it commonly prices off | Agency (GSE) fixed Treasury matched to term, often 10-year | Bank fixed Treasury matched to term, often 5-year | Bank floating SOFR (some banks use prime) | Debt fund / bridge SOFR | Life company Treasury matched to term, 7- to 10-year |
| Attribute FRED series | Agency (GSE) fixed DGS10 | Bank fixed DGS5 | Bank floating SOFR | Debt fund / bridge SOFR | Life company DGS7 / DGS10 |
| Attribute Level on 2026-09-15 | Agency (GSE) fixed 5.00% | Bank fixed 4.83% | Bank floating 3.64% | Debt fund / bridge 3.64% | Life company 4.91% / 5.00% |
| Attribute Level on 2026-09-30 | Agency (GSE) fixed 5.29% | Bank fixed 5.09% | Bank floating 3.90% | Debt fund / bridge 3.90% | Life company 5.19% / 5.29% |
| Attribute Change | Agency (GSE) fixed +0.29 pts | Bank fixed +0.26 pts | Bank floating +0.26 pts | Debt fund / bridge +0.26 pts | Life company +0.28 / +0.29 pts |
| Attribute When the borrower feels it | Agency (GSE) fixed At rate lock | Bank fixed At rate lock | Bank floating Next reset date in the note | Debt fund / bridge Next reset date in the note | Life company At rate lock |
The policy rate and the decision-week tape, each read from FRED:
Federal funds target range upper limit, FRED DFEDTARU (2026-09-15): 3.75% Federal funds target range upper limit, FRED DFEDTARU (2026-09-30): 4.00% Bank prime loan rate, FRED DPRIME (2026-09-15 to 2026-09-30): 6.75% to 7.00% SOFR, FRED (2026-09-16, decision day): 3.62% SOFR, FRED (2026-09-17, effective date): 3.85% 10-year Treasury, FRED DGS10 (2026-09-16): 5.01% 10-year Treasury, FRED DGS10 (2026-09-17): 4.94%
Why did floating multifamily loans reset with the Fed while fixed quotes did not?
Floating multifamily bridge and bank loans are priced as an index plus a spread, and SOFR, the usual index, is an overnight rate that trades inside the policy range, so it stepped up when the hike took effect. Fixed quotes are a spread over a Treasury yield of matching term, and the market reprices that yield every trading day.
The step is visible in a single day. SOFR printed 3.62% on September 16 and 3.85% on September 17, a 0.23-point move overnight, and the Fed's implementation note raised the interest rate paid on reserve balances to 3.90%, effective September 17, 2026. By September 30, SOFR was 3.90%. A floating loan picks that up at its next reset under whatever lookback and rounding the note sets.
The Treasury curve did something different. On the day the hike took effect, the 5-year yield fell from 4.86% to 4.78%, the 7-year from 4.94% to 4.86% and the 10-year from 5.01% to 4.94%. The month's rise in fixed-rate benchmarks came later in the month: the 10-year was 4.96% on September 22, 5.11% on September 23 and 5.29% on September 30. A fixed quote struck on September 17 sat on a lower benchmark than one struck on September 15.
Here is how the floating channel reads on a loan, as an illustrative example only:
Illustrative floating bridge loan: SOFR plus an assumed 3.00-point spread, $10,000,000 interest-only All-in rate on the 2026-09-15 SOFR level: 6.64% All-in rate on the 2026-09-30 SOFR level: 6.90% Added annual interest at the higher level: about $26,000
If the loan carries an interest rate cap, compare its strike with the 3.90% SOFR level. A cap above that level has not started paying, so the full 0.26 points flows through to debt service.
What did the September move mean for an agency (GSE) or life-company fixed quote?
A fixed agency (GSE) or life-company multifamily quote is a spread over a Treasury yield, so the September move that mattered was the market's Treasury repricing, which added 0.28 to 0.29 points to the 7-year and 10-year yields between September 15 and September 30, 2026, rather than the Fed's quarter point itself.
Two pieces set the fixed coupon. The benchmark is the Treasury yield on the day the rate locks. The spread is the lender's charge for credit, term and execution, and no allowlisted source publishes current agency (GSE), bank or life-company multifamily spreads, so this page describes the structure only. Some lenders let a borrower lock the index first and the spread later, or both together; the lock agreement says which.
Until a quote is locked, it floats with the Treasury. That is why the dated tape matters more than the Fed headline for a fixed borrower. Here is the effect of the 0.29-point move in the 10-year yield on debt service, as an illustrative example only:
Illustrative fixed loan: $10,000,000, 30-year amortization, assumed 6.00% coupon before the move Monthly payment at 6.00%: about $59,955 Monthly payment at 6.29%: about $61,832 Added annual debt service: about $22,500
On a loan sized to a debt service coverage ratio, a higher payment lowers the proceeds the same net operating income supports. The multifamily rates page explains quote structure by lender type; its figures predate the September 16 decision. See the agency loan page for how agency (GSE) execution works.
What should an owner with a pending rate lock, index lock or bridge-to-agency exit check?
An owner with a pending lock, an index lock or a planned bridge-to-agency exit should check which index and observation date each quote was struck on, whether the spread is locked separately, and how the September 30, 2026 Treasury and SOFR levels change debt service and refinance proceeds against the original business plan.
Rate lock pending: confirm the Treasury yield and date the quote used. A quote struck before September 23 used a lower 10-year benchmark than one struck at month-end. Index lock already in place: the benchmark is set; confirm when the spread is fixed and whether it can still move. Floating bridge loan: read the reset date, lookback and rounding in the note, and compare any cap strike with the 3.90% SOFR level on September 30. Bridge-to-agency exit: rerun the take-out sizing at the current Treasury level, because the permanent loan is sized on its own coupon, not the bridge loan's.
The bridge-to-agency guide walks through that exit, and the September 2026 bridge pricing record covers the floating side for other property types.
Should you lock an agency rate now or wait on a multifamily refinance?
Whether to lock now or wait is a choice between holding today's Treasury level and holding the risk that it moves, and no published source can tell you which way the benchmark will go. The practical step is seeing agency (GSE), bank, life-company and bridge quotes struck on the same index date.
Three ways to get that comparison, with the brokerage route first:
- A commercial mortgage brokerage. YieldStack is an AI-native commercial mortgage brokerage that arranges financing for commercial real estate investors. Its deal team compares fixed and floating quotes across lender types on the same day, negotiates spread and lock terms on the borrower's side, and returns a median first offer in under an hour, from an institutional lender. It costs Zero upfront to submit; the broker fee is 0.50–1.00% of the loan amount and is paid only at closing.
- Going direct to a single agency (GSE) lender. You see one execution and one lock policy, which makes a cross-type comparison your own work.
- Asking your existing bank. Useful for a fixed or floating balance-sheet loan, though the bank prices off its own index and term.
Every credit decision is made by the lender; no loan, rate, or closing is guaranteed. To see current quotes on your property, submit your multifamily deal for review. The multifamily loan page covers the loan types.
The bottom line
The September 2026 Fed hike reached floating multifamily loans directly: SOFR rose from 3.64% to 3.90% between September 15 and September 30, 2026. Fixed agency (GSE), bank and life-company quotes moved with Treasury yields instead, which fell the day the hike took effect and then rose 0.26 to 0.29 points by month-end. Check your quote's index date before you lock.