What is $100 from 2020 worth today? Less than most people assume. A steady 3% raise every year feels like reliable progress, but in any year when prices rise faster than 3%, that raise is a pay cut in real terms. Almost nobody runs this math, because a bigger number on a paycheck feels like progress whether or not it actually is. Here is the math, run properly.
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The Actual Number: $100 From January 2020 Is Worth About $130 Today
According to the Bureau of Labor Statistics, the Consumer Price Index for All Urban Consumers (CPI-U) went from 257.971 in January 2020 to 334.980 in August 2026, an increase of 29.9%. That means $100 from January 2020 takes roughly $130 today to buy the same basket of goods. Flip it around and it’s the same story from the other direction: $100 today buys what about $77 bought in January 2020.
That 30% figure isn’t abstract. It’s the bar every raise, every return, every interest rate you’ve earned since 2020 needed to clear just to keep you in the same place, not ahead, just even. A lot of people have quietly fallen behind that bar without realizing it, because the individual yearly increases felt reasonable while the compounded total didn’t get added up.
Why the Headline Inflation Number Is Misleading Right Now
The latest CPI data makes this especially easy to misread. In the Bureau of Labor Statistics’ August 2026 report, released September 11, headline inflation was 3.4% year over year. Core inflation, which strips out food and energy, was 2.4%, its lowest rate since March 2021. On the surface, that reads as good news, inflation cooling, pressure easing.
Here’s the catch. The gap between those two numbers, 3.4% versus 2.4%, is almost entirely food and energy, which happen to be the categories people actually notice and budget around every week. The energy index rose 16.3% over the 12 months to August, driven largely by gasoline. Cooling core inflation doesn’t mean your grocery bill or your gas tank got cheaper. Core excludes exactly those categories, so it can fall while the prices you pay most often keep climbing.
This is the trap with reading inflation data at a glance: the aggregate number can look reassuring while the specific line items hitting your actual budget keep climbing. If your monthly spending skews toward groceries, gas, and rent, which most households’ spending does, the 3.4% headline number is closer to your lived experience than the 2.4% core number, not the other way around.
How to Run This for Your Own Numbers
The math itself isn’t complicated once you have the right inputs, it’s just rarely done on purpose. You need a starting amount, a starting year, and the cumulative inflation between then and now, which compounds year over year rather than adding up in a straight line, the same way interest compounds.
This applies just as directly to income as it does to a lump sum. Take your salary from any prior year, run it through the same cumulative inflation adjustment, and compare it to what you’re earning today. If today’s number is lower than the inflation-adjusted version of your old salary, you’ve taken a real pay cut somewhere along the way, even if every individual raise felt like a gain in the moment it landed.
It also applies to savings sitting in cash. A high-yield savings account paying even 4% still needs to clear whatever inflation is running that year just to hold its value, let alone grow it in real terms; a standard account paying under 1% is losing purchasing power every single year it sits there, guaranteed, regardless of what the account balance shows.
Real-World Scenarios
The salary comparison. Someone earning $65,000 in January 2020 would need to be earning about $84,400 today just to have the same real purchasing power, based on the 30% cumulative figure. If their actual 2026 salary is $78,000, which sounds like solid growth on paper, 20% over six years, they’re still about $6,400 behind in real terms. The raise was real. It just didn’t outrun inflation.
The savings account. $20,000 sitting in a 0.5% traditional savings account since 2020 has grown to about $20,700 in nominal dollars. In January 2020 purchasing power, accounting for the 30% cumulative inflation, that $20,700 is worth roughly $15,900. The account balance went up. The actual value went down by about a fifth.
The home price comparison. A home worth $320,000 in January 2020 would need to be worth about $415,000 today just to have kept pace with general inflation, separate from whatever the housing market specifically has done on top of that. This is relevant background for anyone comparing what a home “should” cost now against what they remember it costing a few years ago; some of that increase is housing-specific, but a real chunk of it is just inflation across the whole economy, which is worth separating out before assuming a price is inflated beyond reason. It’s a useful cross-check when running rent vs buy numbers against a memory of what things used to cost.
Common Mistakes People Make Here
Comparing nominal numbers instead of real ones. A bigger paycheck, a bigger savings balance, or a lower interest rate than a few years ago can all look like progress while actually representing a real-terms decline once inflation is factored in. The nominal number is never the whole story.
Assuming core inflation reflects lived experience. Core CPI strips out food and energy specifically because they’re volatile, which is useful for economists tracking underlying trends but nearly useless for a household trying to understand why groceries and gas keep taking a bigger bite out of the same paycheck.
Treating cash savings as risk-free. Cash doesn’t lose nominal value sitting in an account. It reliably loses real value if the account’s rate is below the inflation rate, which is a genuine, quantifiable loss even though it never shows up as a negative number on a statement.
The Bottom Line
Inflation doesn’t announce itself with a single dramatic number. It compounds quietly in the background while nominal numbers, salaries, savings balances, home prices, keep climbing just enough to feel like progress. Running the actual purchasing-power math, not just glancing at a headline CPI figure, is the only way to know whether you’re actually ahead, or just keeping pace with a bar that’s been rising the whole time.
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