Is a savings rate beating inflation in 2026?

The comparison that matters

Nominal interest tells you how many dollars you earn. Inflation tells you what those dollars buy. The Federal Reserve data series for the 3-month Treasury bill, a short-term loan to the US government, averaged 3.94% in September 2026 and 3.72% in August. The 12-month change in the CPI to August was 3.35%.

Subtract one from the other and the real return is about 0.59 points. It is positive but thin. The gap used to be wider: the bill rate ran 1.6 points above inflation in September 2023 and 2.3 points above in September 2024. It has narrowed since.

A caution on the benchmark. A Treasury bill is not a bank savings account. National savings account averages are often lower than short Treasury yields,* so a typical bank account may earn less than the figure above. Check your own account's APY.

Treasury bill yield and inflation, three years

Worked example: $10,000 for a year

Put $10,000 at 3.94% for one year. You earn about $394 before tax. If prices rise by the same 3.35% as the last 12 months, you would need $335 just to hold your buying power. Your real gain is roughly $59.

Now a 1% savings account over the same period. You earn about $100 and lose about $235 of buying power, a real loss of around $235.

Assumptions: one year, simple annual rate, no tax, rates and inflation constant. In practice both change. Treasury interest is subject to federal income tax and exempt from state and local income tax,* and bank interest is taxed at all levels, which changes the after-tax result.

Real returns and the tax and fee layer

The real return in this post is a simple subtraction: the nominal rate minus the 12-month inflation rate. A more careful version divides one plus the nominal rate by one plus inflation. For rates this size the two methods differ by a few hundredths of a point, so the simple version is fine.

Where it gets less simple is tax. Interest is generally taxable income, so a person in a 22% federal bracket keeps about 78% of the interest at the federal level.* After tax, a 3.94% yield falls to roughly 3.07%, below the 3.35% inflation rate. That makes the pre-tax real gain of 0.6 points an after-tax real loss for many savers. The exact result depends on your bracket and on state tax, which is why Treasury bill interest, being exempt from state tax,* looks better than bank interest for people in high-tax states.

Fees are the other layer. A savings account with no fee and an APY above inflation does the job. An account with a monthly charge or a minimum balance can eat the gain. Add up what you actually earn after those costs before you compare.

What this means for your wallet

Short-term savings only break even in real terms when the rate is above inflation. In September 2026 the 3-month Treasury bill yield (3.94%, FRED TB3MS) was 0.59 points above the 12-month CPI-U rise to August (3.35%). That compares a current yield with past inflation, and one maturity; yields on other maturities and future inflation can differ. Money you will need in a year does not have to beat inflation by much, but money you will not need for ten years is exposed to inflation compounding.

For emergency cash, the priority is access and safety, and a modest real return is a bonus. Beyond that, ask what rate you actually earn. As a rough guide, a nominal rate below the latest 12-month CPI-U rise (3.35% to August 2026) means the balance bought less over that stretch, before tax. Interest is usually taxable,* so the after-tax rate is lower, and what you actually realize depends on prices over the period you hold, not the past 12 months.

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