Your Personal Inflation Rate Is Not 3% — Here's How to Calculate It
The Bureau of Labor Statistics reports a single inflation number each month. That number is the average price change across 130 million American households. But no household is average.
Why the official CPI inflation rate is misleading
When the news says “inflation is 3.1%,” they are reporting the year-over-year change in the Consumer Price Index for All Urban Consumers (CPI-U, series CUUR0000SA0). The BLS calculates this by tracking prices of roughly 80,000 goods and services, then weighting them by how the average American household spends.
The average American household spends about 34% on housing, 16% on transportation, 13% on food, and 8% on medical care. These weights come from the Consumer Expenditure Survey.
But you are not the average American household.
If you rent in a major city and spend 45% of your income on housing, your inflation rate is dominated by shelter costs, which rose 28.9% from 2020 to 2025 (BLS series CUUR0000SAH). If you own your home outright and spend 25% on healthcare, your rate is driven by medical care costs, which rose 19.9% over the same period (CUUR0000SAM).
Same five years. Wildly different inflation experiences.
Inflation rate by category: CPI breakdown 2020-2025
The BLS publishes sub-indices for eight major spending categories. Each has its own CPI series tracking price changes independently. Here is how each category moved from 2020 to 2025:
| Category | CPI 2020 | CPI 2025 | Change | Annualized |
|---|---|---|---|---|
| Food & Beverages | 264.8 | 337.0 | +27.3% | 4.9% |
| Housing | 270.1 | 348.2 | +28.9% | 5.2% |
| Apparel | 116.7 | 127.0 | +8.8% | 1.7% |
| Transportation | 210.6 | 290.0 | +37.7% | 6.6% |
| Medical Care | 512.9 | 615.0 | +19.9% | 3.7% |
| Recreation | 114.9 | 139.5 | +21.4% | 3.9% |
| Education & Communication | 135.6 | 167.5 | +23.5% | 4.3% |
| Other Goods & Services | 444.7 | 522.0 | +17.4% | 3.3% |
| All Items (National CPI) | 258.8 | 320.8 | +24.0% | 4.4% |
Source: U.S. Bureau of Labor Statistics, CPI-U annual averages. Series IDs: CUUR0000SAF, SAH, SAA, SAT, SAM, SAR, SAE, SAC, SA0. Base period: 1982-84 = 100.
Transportation inflated at 6.6% annually. Apparel at 1.7%. That is a nearly 4x difference. Your personal inflation rate is the weighted average of these category rates, where the weights are your actual spending percentages, not the national average.
How much has inflation gone up for different households?
Consider two real spending profiles:
Household A: Renter in a high-cost city
- Housing: 45% of spending (vs 34% national)
- Transportation: 8% (takes public transit)
- Food: 15%
- Medical: 5%
Personal inflation rate (2020-2025): 5.0% annualized. That is 0.6 percentage points above the national 4.4%. Over five years, this household lost 14% more purchasing power than the headline number suggests.
Household B: Homeowner with a paid-off mortgage
- Housing: 15% of spending
- Transportation: 25% (two-car family, long commute)
- Food: 20%
- Medical: 12%
Personal inflation rate (2020-2025): 4.8% annualized. Despite spending less on housing, heavy transportation and food spending (both categories that inflated sharply) pushes their rate above average too.
Is your salary keeping up with inflation?
If you earn $75,000 and your employer gives you a 3% raise “to match inflation,” they are matching the wrong number. If your personal inflation rate is 5.0%, that 3% raise is actually a 2% pay cut in real terms.
On $75,000, the difference between a 3% and 5% raise is $1,500 per year. Over five years without correction, you are down $7,500 in cumulative purchasing power, and the gap widens every year because inflation compounds.
How to calculate your personal inflation rate
The formula is straightforward:
- List your monthly spending in each of the 8 BLS categories
- Calculate each category's weight (category spend / total spend)
- Look up the CPI change for each category over your time period
- Multiply each category's change by its weight
- Sum the weighted changes for your cumulative personal rate
- Annualize: (1 + cumulative)^(1/years) - 1
Or skip the math and use our free Inflation Calculator to see how purchasing power has changed over any period.
Want the full breakdown?
Our Personal Inflation & Tariff Impact Tracker spreadsheet does all of this automatically. Enter your spending, get your personal rate, see your salary gap, and project costs 20 years forward. 10 sheets, BLS data embedded, no subscriptions.
What is the real inflation rate in 2025?
The national CPI is a useful benchmark. It is not your inflation rate. Depending on where you live, what you drive, what you eat, and how you get healthcare, your actual rate could be 1-2 percentage points higher or lower than the headline number.
That difference compounds. Over a decade, 1 extra percentage point of inflation costs a $75,000 earner roughly $40,000 in lost purchasing power. Knowing your real number is the first step to negotiating the right raise, budgeting accurately, and making financial plans that actually hold up.
Frequently asked questions about inflation rates
What is a personal inflation rate?
A personal inflation rate is the actual rate at which prices are rising for your specific spending pattern. It is calculated by weighting BLS CPI sub-index changes by how you actually spend your money, rather than using the national average weights from the Consumer Expenditure Survey.
How much has inflation gone up since 2020?
Overall CPI-U inflation from 2020 to 2025 was 24.0% (4.4% annualized). By category: transportation rose 37.7%, housing 28.9%, food and beverages 27.3%, education 23.5%, recreation 21.4%, medical care 19.9%, other goods and services 17.4%, and apparel 8.8%.
Why is my cost of living going up faster than inflation?
The headline CPI is a weighted average across all categories. If your spending is concentrated in housing (up 28.9% since 2020), food (up 27.3%), or transportation (up 37.7%), your personal cost of living increase will be higher than the national average of 24.0%. Most households spend heavily on these three categories.
What is the real inflation rate in 2025?
The official CPI-U year-over-year rate was approximately 2.5% in 2025. However, food ran at 3.1% and housing at 3.0%, meaning most households experienced above-headline inflation because food and housing dominate typical budgets (47% combined).
How do I ask for a raise based on inflation?
Calculate your personal inflation rate using your actual spending breakdown, not the headline CPI. If your personal rate is 5.0% but your employer offers 3%, show them the category-level data. A 3% raise on $75,000 when your personal rate is 5% is effectively a $1,500/year pay cut.
Data sources: U.S. Bureau of Labor Statistics CPI-U sub-indices (annual averages, 2020-2025). Consumer Expenditure Survey (spending weights). All figures independently verified against accurate.software calculators. Analysis by the staff at accurate.software.