Why a Dollar Buys Less Every Year
You just paid $6.49 for a dozen eggs that cost $2.79 five years ago. Your paycheck did not double to match it. You are staring at a savings account earning 0.5% while your rent went up 30%, and you want to know if this is normal or if something is actually broken.
It is normal. A dollar buys less every year because the number of dollars in circulation grows faster than the number of goods and services those dollars can buy. The Federal Reserve creates money by buying bonds and adjusting interest rates, banks lend out multiples of what they hold in deposits, and the government spends more than it collects in taxes and covers the gap with borrowed money. More dollars chasing a roughly similar amount of stuff means each dollar is worth a little less than it was the year before. That is inflation, and it is not a glitch. It is the design.
Why does a dollar lose value in the first place?
Money only has value because people agree to treat it as valuable. It is not backed by gold. It is not backed by anything except trust in the government that issues it and the economy behind it.
When more dollars enter the system, whether through government spending, bank lending, or the Fed buying assets, the supply of dollars grows. If the supply of actual goods, houses, labor hours, and food does not grow at the same pace, prices rise to absorb the difference. That is what economists mean when they say inflation is a monetary phenomenon. It is not really about greedy landlords or greedy grocery chains, though both exist. It is about how many dollars are chasing a fixed pie.
The U.S. has targeted about 2% annual inflation since the 1990s. That number is not an accident. It is a policy choice, because the alternative, an economy where prices fall (deflation), tends to make people stop spending and stop borrowing, which is worse for jobs and growth than slow, steady inflation.
What does that actually cost you, in dollars?
Here is the math, and it is simple compound math, the same formula that grows your 401(k).
Say you have $50,000 sitting in a checking account earning nothing, which is close to what most checking accounts pay. At 3% average annual inflation, here is what that $50,000 is worth in real purchasing power over time:
- Year 0: $50,000
- Year 5: $43,131
- Year 10: $37,204
- Year 20: $27,684
You did not lose a single dollar off the balance. The number on your statement still says $50,000 at year 20. But what it can buy has dropped by nearly $22,400 worth of goods and services, measured in today's prices. That is the part people miss. Inflation does not take money out of your account. It takes purchasing power out of the money that is already there.
Now compare that to $50,000 in an account or investment earning 5% a year, with inflation still running at 3%. Your real return is roughly 2% a year. After 20 years, adjusted for inflation, you are sitting on about $74,300 in today's dollars, instead of $27,684. Same starting point. Completely different outcome. The only variable that changed is whether your money was earning more or less than inflation was taking away.
What people get wrong about inflation
The first mistake is treating a savings account as safe. It is safe in the sense that the number will not go down. It is not safe in the sense that it protects what that number can buy. Cash sitting still is a guaranteed, slow loss once you account for inflation. I have watched clients hold six figures in a 0.5% savings account for a decade because it felt safer than the market. It was not safer. It was a slower, quieter loss they never saw on a statement.
The second mistake is assuming a raise fixes the problem. If your income goes up 3% and inflation runs at 3%, you have not gained anything. You are treading water. A lot of people feel richer because the number on their paycheck is bigger, without noticing that everything they buy costs more too. Compare your raise to inflation, not to zero.
The third mistake is confusing inflation with a price going up because of a shortage. Egg prices spiked in 2022 and 2023 partly because of avian flu wiping out flocks, not purely because of monetary inflation. Some price increases are supply shocks that fade. Others are the slow, steady erosion of the dollar itself. They can look identical on a receipt but they behave differently over time, and only one of them is a permanent feature of how money works.
What to actually do about it
You cannot stop inflation. You can only decide where to put your money so it grows faster than inflation shrinks it.
Cash and standard savings accounts almost never beat inflation over time. They are useful for near-term expenses and emergency funds, three to six months of expenses, nothing more, because that money needs to be there when you need it, not chasing a return.
Money beyond that emergency cushion needs to be somewhere that has historically outpaced inflation over long periods: ownership assets. That means equity in a business, shares of stock, or real estate. All three represent a claim on real, productive things, companies that raise their prices along with inflation, or property that rents for more each year as the dollar weakens. Real estate specifically benefits twice: the property value tends to track inflation over time, and if you financed it with a fixed-rate loan, you are paying that loan back in dollars that are worth less every year than the dollars you borrowed. I bought a fourplex in 2011 with a fixed 30-year mortgage. The rent has gone up every year since. The mortgage payment has not moved once.
The honest limitation here: none of this is guaranteed. Stocks can drop 30% in a year. Real estate markets can go flat or fall for a stretch, and I have owned property through both. Beating inflation over 20 years is a very different bet than beating it this year or next year. Nobody can promise you a return, and anyone who does is selling you something. What history shows is that cash guarantees a loss to inflation over time, while ownership assets have a real chance, not a certainty, of beating it.
If you want the fuller picture, how inflation connects to interest rates, how the Fed actually moves the levers, and how to build a plan around it instead of just reacting to grocery prices, that is what the Money Decoded Trilogy walks through start to finish. You can find it at readmoneydecoded.com/trilogy.