If your streaming service raised its price by 3% every year, you’d probably notice. If your rent rose 3%, you’d definitely notice. But when almost everything gets a little more expensive each year, many people don’t notice until they wonder:
“Why does my paycheck feel bigger, but my money feels smaller?”
That’s inflation—and understanding it is one of the most important financial skills young adults can develop.
Most young adults spend time tracking their bank account balances, investment returns, and credit scores. Yet many overlook inflation – one of the most important financial metrics affecting every dollar they earn, save, and invest.
Ignoring inflation is like driving a car while covering up the speedometer. You might still get where you’re going, but you’re missing information that could prevent expensive mistakes.
If you’re interested in better understanding inflation, including why and how to track it for planning purposes, keep reading.
What is inflation?
Inflation is the rate at which the general prices of goods and services increase over time.
Here’s a simple example:
If a basket of groceries costs $100 this year and $103 next year, inflation is 3%.
That means your money buys less than it did before. The dollars in your bank account haven’t changed, but their purchasing power has.
Think of inflation as a slow leak in your wallet. One year doesn’t seem dramatic, but over decades the effect is enormous.
Inflation isn’t always bad. Moderate inflation is a normal part of a growing economy. The problem occurs when your income, savings, and investments fail to keep up.
Why tracking inflation matters
Many people budget in nominal dollars (the number printed on a paycheck or account statement). Smart financial planning requires thinking in real dollars—what that money can actually buy.
(1) Forecast future living costs
Suppose your annual expenses are $50,000 today and inflation averages 3%.
In 10 years, maintaining the same lifestyle would cost roughly $67,000 per year—not $50,000.
If you ignore inflation, your budget will almost certainly underestimate future expenses.
(2) Measure your household purchasing power
A raise in earnings is only meaningful relative to inflation.
| Scenario | Result |
| Pay increases 2% | Inflation is 4% |
| Nominal income | Higher |
| Real purchasing power | Lower |
Even though your paycheck is larger, you can afford less. Tracking inflation helps you determine whether your household is truly getting ahead.
(3) Calculate real investment returns
Investments are often quoted in nominal returns (for example, “the market returned 8%”).
But if inflation was 3%, your real return was only about 5%.
The relationship is approximately:
Real return ≈ Nominal return − Inflation rate
This is the number that matters for building future spending power.
The inflation trap young adults often miss
Many younger adults assume inflation only matters later in life.
In reality, inflation has the biggest impact on long-term goals because time amplifies its effects.
Consider two 25-year-olds:
Alex tracks inflation and invests with purchasing power in mind.
Taylor focuses only on account balances.
Thirty years later, Alex understands how much wealth is needed to maintain a desired lifestyle. Taylor may have accumulated a large portfolio but underestimated future living costs.
The difference isn’t intelligence.
It’s understanding the role inflation plays in every financial decision.
What inflation rate should you use?
No one knows future inflation with certainty.
For planning purposes, many financial professionals use assumptions between 2% and 3% annually.
When building long-term projections:
- Use 2% for optimistic scenarios.
- Use 3% for moderate scenarios.
- Use 4% for stress-testing your plan.
Running multiple scenarios helps prepare for uncertainty.
The bottom line
Inflation isn’t just a headline on the evening news. It determines how much your paycheck is worth, how expensive your future lifestyle will be, and whether your investments are truly growing your wealth.
Track prices the way you track income.
Because the goal isn’t to accumulate the most dollars—it’s to accumulate the most purchasing power.
And inflation is the benchmark that tells you whether your money is actually keeping up.
If you are interested in learning more about why inflation matters for financial planning and what the best sources are for tracking inflation in the U.S. and Europe, check out this information brief.