Is your savings account losing money? The real return, explained
Your bank shows a positive interest rate, yet your money buys less every year. Here is how the real return works, with today's US figures.
Your savings account statement shows interest coming in every month, so it feels like your money is growing. But the number that matters is not how many dollars you have. It is what those dollars can buy. That is what the real return measures.
The one-line definition
The real return is your interest rate minus inflation. If your account pays 4% and prices rise 3%, your purchasing power grows by roughly 1% a year. If your account pays less than inflation, your balance goes up in dollars but down in what it buys.
Today's US numbers
In September 2026, the national average savings rate published by the FDIC was 0.37%, while consumer prices (CPI-U) were 3.7% higher than a year earlier. That puts the real return on an average savings account at -3.33%.
| Measure | Latest value |
|---|---|
| Average savings rate (FDIC) | 0.37% |
| Average 12-month CD rate (FDIC) | 1.76% |
| CPI inflation, year over year | 3.7% |
| Real return on average savings | -3.33% |
These figures update automatically every day from the official sources listed at the bottom of this page.
What a negative real return means for $10,000
Suppose you keep $10,000 in an average savings account for a year. You will see a little interest arrive, so the balance ends slightly higher. But if inflation runs well above that rate, the same basket of groceries, rent and gas costs noticeably more at the end of the year. The gap between the two is the purchasing power you lost, even though no dollar ever left your account.
Over several years the effect compounds. A real return of minus 3% a year means that after ten years your savings buy roughly a quarter less than they did at the start. You can run your own numbers in the savings calculator, which shows both the dollar balance and its value in today's money.
Why this happens
Banks set savings rates based on their own funding needs and competition, not on inflation. Large banks often pay very little on standard savings accounts because many customers never move their money. At the same time, inflation is driven by the wider economy. Nothing links the two, so for long stretches the average account pays less than prices rise.
The average also hides a wide spread. Some high-yield savings accounts, money market funds and short-term Treasury bills pay considerably more than the national average. The average 12-month CD currently pays 1.76%. Whether any of these beats inflation depends on the rate at the moment you compare.
Cash still has a job
None of this means cash is useless. Money you may need soon, such as an emergency fund, belongs somewhere safe and instantly available, even if it loses a little purchasing power. The goal is to hold the right amount: many planners suggest three to six months of essential spending. The emergency fund calculator helps you size that buffer.
The problem starts when far more than that buffer sits in a low-rate account for years. That money is exposed to inflation without the growth that long-term investments have historically offered.
Three practical checks
- Compare your own rate with inflation. Look up the APY on your account and compare it with the CPI figure above. If it is far lower, you are in negative real territory.
- Size your buffer. Decide how much cash you actually need on hand, and treat everything above that as money that should be working harder.
- See the long view. Use the inflation calculator to see how much a dollar from ten or twenty years ago is worth today. It makes the slow erosion visible.
The bottom line
A savings account is a good place for safety and short-term needs, but at the average rate it is not a place where money grows in real terms. Knowing your real return is the first step toward deciding how much to keep in cash and how much to put to work. The next chapter of this guide compares brokers for when you are ready to invest.
Sources
- FDIC national average savings rate (FRED series SNDR)
- BLS Consumer Price Index for All Urban Consumers (FRED series CPIAUCNS)
- FDIC national average 12-month CD rate (FRED series NDR12MCD)
Figures in the text update daily from the sources listed. Information, not financial advice.