Inflation and Your Savings
By the TidyTally team · Last updated October 21, 2026
Inflation is the reason a dollar buys less than it used to. It rarely makes headlines when it is low, but over a decade or two it quietly reshapes what your savings are worth. In its September 2026 report, the Bureau of Labor Statistics showed consumer prices up 3.7% from a year earlier, a reminder that the purchasing power of cash is not fixed. This guide explains how inflation works, how to measure what it does to your money and what savers can do about it.
What inflation is and how it is measured
Inflation is the rate at which the general level of prices rises over time. In the United States, the most commonly cited measure is the Consumer Price Index (CPI), published monthly by the Bureau of Labor Statistics, which tracks the cost of a basket of goods and services. The Federal Reserve targets 2% annual inflation over the long run using a related measure, the PCE price index.
Headline CPI includes everything, while "core" CPI excludes food and energy, which tend to be volatile. Your personal inflation rate can differ from the national average depending on what you buy — housing, healthcare, transportation and food rise at different speeds.
A worked example
At 3.7% annual inflation, something that costs $100 today would cost about $143.81 in ten years, and your $100 in cash would buy only about $69.54 worth of today's goods. At a more moderate 3%, prices rise about 81% over twenty years: $100 becomes $180.61. Use the Inflation Calculator to test your own amounts, years and rates.
The Rule of 72 for inflation
A quick way to estimate how fast prices double is to divide 72 by the inflation rate. At 3.7%, prices double in about 19.5 years; at 2%, in about 36 years; at 6%, in about 12 years. The same rule works for investments: money earning 6% doubles in about 12 years.
Real return: what actually matters
Your real return is your investment or savings return minus inflation. A savings account paying 4% while prices rise 3.7% delivers a real return of roughly 0.3%, meaning your buying power is barely growing. If the account pays 1% in the same environment, your real return is about −2.7%: the balance rises while its purchasing power falls. The precise formula is (1 + nominal) ÷ (1 + inflation) − 1, but subtraction is a good approximation for small rates.
Practical ways savers respond
Shop for yield on cash. Rates at online banks often track the Federal Reserve's policy rate and can run far above the national average — see our high-yield savings guide. Consider inflation-linked government securities. Treasury Inflation-Protected Securities (TIPS) and Series I savings bonds adjust for inflation; I bonds have a purchase limit of $10,000 per person per year through TreasuryDirect, and their rates reset every six months. Invest for long-term goals. Over long periods, stocks have historically outpaced inflation, though with significant volatility and no guarantees, which is why they suit money you will not need for many years. Grow your income. Raises, skills and career moves are an inflation hedge too.
Inflation and big plans
Inflation matters most for long-term goals such as retirement. A retirement budget of $50,000 in today's dollars needs more than $90,000 in nominal dollars in 20 years at 3% inflation. That is why our retirement savings guide stresses growth, and why a calculator that includes inflation is worth using. Also, if you hold fixed-rate debt like a mortgage, inflation can reduce the real burden of the payment over time.
The bottom line
You cannot control inflation, but you can control where your money sits. Keep emergency savings safe and earning a competitive yield, invest long-term money in a diversified way, and check your plans using realistic assumptions. Even a modest, steady effort to earn more than inflation makes a big difference over a few decades.
Frequently asked questions
What is a normal inflation rate?
The Federal Reserve targets 2% a year over the long run. Actual inflation fluctuates and has been well above or below that at different times, including 3.7% in the 12 months to September 2026 according to BLS data.
Is my money safe in a savings account during inflation?
Your balance is safe up to FDIC or NCUA insurance limits, but its purchasing power falls if the interest rate is lower than inflation. A competitive high-yield rate can offset much of that.
Do I benefit from inflation if I have a mortgage?
Somewhat. With a fixed-rate loan, your payment stays the same while wages and prices tend to rise, which reduces the payment's real burden over time. But inflation is also usually accompanied by higher rates on new loans.
What is the difference between CPI and core CPI?
CPI measures price changes across a broad basket of goods and services. Core CPI excludes food and energy because they swing from month to month, giving a steadier view of underlying inflation.
Keep reading
- High-Yield Savings Accounts: How to Choose
- How Much Should You Save for Retirement?
- APR vs. APY: What's the Difference?