The Fed’s first hike since 2023: what it changes in a retirement plan
On September 16, 2026, the Federal Reserve raised interest rates for the first time since July 2023. The Federal Open Market Committee voted 12–0 to lift the target range for the federal funds rate by a quarter point, to 3.75%–4.00%. Its statement gave the reasoning in two sentences: inflation “remains elevated,” and the move “will support a timelier return to the Committee’s 2 percent goal.”
A quarter point on an overnight rate between banks sounds remote from a retirement plan, but some parts of a plan feel it within days. Others barely notice, and a few respond to what the bond market expects the Fed to do next. Below is what moves, with numbers from the Fed and Treasury as of October 2, 2026.
Where rates stand, and where the Fed says they’re going
The Fed’s quarterly Summary of Economic Projections, released alongside the decision, shows where committee members think things are heading. These are medians, not commitments:
| Median projection (Sept 2026) | 2026 | 2027 | 2028 | Longer run |
|---|---|---|---|---|
| Federal funds rate | 4.1% | 4.1% | 3.9% | 3.2% |
| PCE inflation | 3.7% | 2.3% | 2.1% | 2.0% |
| Core PCE inflation | 3.4% | 2.5% | 2.2% | — |
| Unemployment rate | 4.1% | 4.1% | 4.1% | 4.2% |
Source: Federal Reserve, Summary of Economic Projections, September 16, 2026.
A 4.1% median for the end of 2026 sits above the current 3.75%–4.00% range. That’s consistent with one more quarter-point increase this year. Two meetings remain: October 27–28 and December 8–9. The December meeting comes with a fresh set of projections.
Cash moves first
Savings accounts, money market funds and short Treasury bills track the policy rate closely. The Fed’s H.15 release shows the effective federal funds rate at 3.88% in the final days of September, and Treasury put the 3-month bill at 4.11% on October 2.
What matters for a plan is the yield after inflation. Against a median 2026 PCE inflation projection of 3.7%, a cash yield near 4% is close to standing still in real terms. Higher nominal cash yields help a retiree’s cash bucket keep pace, but on these projections it won’t grow much in purchasing power.
One detail for anyone claiming Social Security early while still working: interest income doesn’t count toward the Social Security earnings test; only wages and self-employment income do. Our post on how the earnings test works covers that in full.
Bonds: the market sets long yields
The Fed controls a short-term rate. Longer yields come from the bond market, which prices expected future short rates, inflation and a premium for lending long. On October 2, 2026, Treasury’s par yield curve looked like this:
| Maturity | 3-month | 1-year | 2-year | 5-year | 10-year | 30-year |
|---|---|---|---|---|---|---|
| Nominal yield | 4.11% | 4.13% | 4.46% | 4.96% | 5.28% | 5.63% |
Source: U.S. Treasury, Daily Treasury Par Yield Curve Rates, October 2, 2026.
Long yields well above short ones mean the market is demanding more to lend for decades than for months. For existing bondholders, the link between yield and price is mechanical: when yields rise, prices of bonds already held fall, and longer bonds fall more. As an illustration (cinder.fi arithmetic on a par bond with semi-annual coupons), here’s what an immediate one-percentage-point rise in yield does to price:
| Bond (priced at today’s yield) | Price change if yields rise 1 point |
|---|---|
| 2-year at 4.46% | about −1.9% |
| 10-year at 5.28% | about −7.3% |
| 30-year at 5.63% | about −13.0% |
Higher yields matter for long-term projections for the opposite reason. A bond bought at 5.28% and held to maturity earns roughly 5.28% a year, regardless of interim price swings. That’s why starting yields are the usual anchor for long-term bond return assumptions. Our guide on retirement return assumptions covers how planners translate that into the return figure a projection runs on.
Real yields and inflation-protected income
Treasury Inflation-Protected Securities (TIPS) pay a yield on top of CPI inflation. Treasury’s real yield curve on October 2, 2026:
| Maturity | 5-year | 7-year | 10-year | 20-year | 30-year |
|---|---|---|---|---|---|
| Real yield (TIPS) | 2.69% | 2.80% | 2.92% | 3.19% | 3.34% |
Source: U.S. Treasury, Daily Treasury Par Real Yield Curve Rates, October 2, 2026.
Subtract the 10-year real yield (2.92%) from the 10-year nominal yield (5.28%) and you get about 2.36%. That’s a rough read of the inflation rate the bond market is pricing over the next decade: below the Fed’s 3.7% projection for this year, and close to its 2027–2028 figures. The market is broadly taking the Fed at its word that inflation comes back down.
Real yields near 3% are the benchmark for any decision that trades money now for inflation-indexed income later. The biggest such decision in most US retirement plans is when to claim Social Security. Delaying is effectively a purchase of CPI-indexed lifetime income. The higher the real yield you could earn elsewhere, the higher the bar that purchase has to clear. Our Social Security claiming guide shows the arithmetic. Discounting at a 2.92% real rate pushes the familiar claiming break-even ages out by roughly four years.
I bonds: a rate reset on November 1
Series I savings bonds issued from May 1 through October 31, 2026 earn a 4.26% composite rate. That’s made up of a 0.90% fixed rate, locked for the life of the bond, plus an inflation component that resets every six months. TreasuryDirect will announce the rate for bonds issued from November 2026 through April 2027 on November 1, 2026.
The fixed rate is the part comparable to a TIPS real yield, because both are paid on top of inflation. A 0.90% fixed rate sits well below the 2.69% five-year TIPS real yield. The two aren’t identical products: I bonds are limited to $10,000 a year in electronic bonds per Social Security number, can’t be cashed in the first 12 months, and forfeit the last three months of interest if cashed within five years. Still, the gap is wide, so compare what each pays above inflation.
Variable-rate debt reprices at once
Borrowing that floats off a benchmark rate reprices almost immediately. The bank prime loan rate, the base many banks use to price home equity lines of credit and other variable loans, stood at 7.00% in the Fed’s H.15 release, three points above the top of the new federal funds range.
Each quarter-point increase adds about $250 a year of interest per $100,000 borrowed on an interest-only basis. That matters for two common retirement strategies:
- Home equity lines of credit used as a cash reserve or bridge. Our guide on home equity and HELOCs in retirement covers how that reserve works.
- Portfolio lines of credit, which let a retiree borrow against a taxable portfolio instead of selling. Our portfolio line of credit guide notes that these float off benchmark rates such as SOFR or the broker call rate, so the cost of carrying a balance rises with each hike.
Compare the after-tax borrowing cost with what the money is expected to earn. Rising rates push that comparison one way. The same logic applies to the pay down the mortgage or invest question: a fixed-rate mortgage doesn’t reprice, but the yield you could earn on safe assets just went up.
What to watch next
- October 14, 2026: BLS publishes September CPI, the last input to the 2027 Social Security cost-of-living adjustment.
- October 27–28, 2026: next FOMC meeting.
- November 1, 2026: new I bond rates for November 2026 through April 2027.
- December 8–9, 2026: the final FOMC meeting of the year, with updated projections.
These dates affect a plan’s inputs: the return on cash and bonds, the cost of borrowing, and the discount rate behind decisions like claiming age. A projection is only as current as those inputs. cinder.fi’s US retirement calculator lets you set return and inflation assumptions and rerun your plan when they move. The mortgage payoff calculator shows what extra payments are worth at your actual rate.