— Explainer
Why your savings rate follows the Fed.
The Fed moves the overnight rate. Your savings account follows, eventually, at a fraction of the pace, and only as much as your bank thinks it has to.
— Fed funds vs national HYSA rate, 2015+
The passthrough, drawn out
— Where we are now
2026-03: Fed funds at 3.64%, the national savings average at 0.39%, a gap of 3.25 percentage points.
That gap is roughly the spread your bank is keeping. A top online HYSA right now pays inside 25 basis points of the 3-month T-bill, which is most of the way closed. If your account is closer to the national average than to the T-bill, the gap is your problem, not the Fed’s.
— Why banks are slow to raise and quick to cut
The deposit passthrough is asymmetric by design.
A bank has pricing power on your deposit. It sounds aggressive. It is not really. It is the boring reality that most of your money is sticky. You set up direct deposit once. You wired your mortgage autopay to a specific routing number. Your password is remembered in a browser. Moving banks takes a Saturday afternoon you do not have. The bank knows this, and so do you, and so the bank can lag your rate below the market for months and count on most of the balance staying put.
The other side of the balance sheet is faster. A bank’s loan book is mostly variable or floating: credit cards reset monthly, HELOCs reset at prime, commercial loans reset off SOFR. When the Fed cuts, the income side drops almost immediately. Banks protect net interest margin by cutting deposit rates before the income pain fully arrives. Cuts pass through to you within weeks. Hikes take quarters.
That asymmetry is the spread the bank earns. Slow on the way up, fast on the way down, with the margin collected on every dollar sitting in the account in between. It is not a scandal. It is the business model. It has a name. Deposit beta, asymmetric, cycle after cycle, documented in every bank’s 10-K. The only defense is to be the depositor the bank assumes is paying attention.
— Put a number on your gap
Compare your rate to the risk-free benchmark.
Enter your APY and the balance. We compare against the live 3-month T-bill yield, the risk-free rate you could earn yourself, and the FDIC national average, which is the floor. The gap in basis points is what the bank is keeping.
Want the full printable summary with all three benchmarks and the verdict gauge? The savings rate tracker runs the same calculator with a year-by-year history table and an am-I-getting-a-fair-rate handout you can print.
— FAQ
Savings rates, answered.
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