This calculator works out your personal inflation rate, the rate your own cost of living has risen, which is often very different from the official inflation figure you hear in the news. The Consumers Price Index, or CPI, measures the average price change across a fixed basket of goods and services for the whole country, but no household spends like the average. If a big share of your money goes on rent, petrol, food or insurance, and those have risen faster than the average, your real inflation rate can be well above the headline number, which is why the official figure so often feels too low. Knowing your own rate helps you budget realistically, judge whether a pay rise actually keeps you ahead, and plan savings and investments that need to beat your true cost of living. The calculator keeps it simple: you enter what you spent over a year on your regular costs, then what the same things cost you now over a year, and it returns your personal inflation rate as a percentage, the dollar increase, and how that compares to the official CPI. If your personal rate is above CPI, your money is losing value faster than average and you may need to trim spending, switch providers or push harder for income growth. Compare like with like for the most accurate result, using roughly the same lifestyle in both figures rather than periods where your spending changed for other reasons. This is a personal budgeting estimate to give you a clearer picture than the national average, not an official statistic.
Compare the same lifestyle in both years for accuracy. Your rate often differs from the national CPI. A personal budgeting estimate.
Your personal inflation rate is the increase in your spending divided by last year's spending, as a percentage. The yearly increase is simply this year's figure minus last year's. The comparison shows how far above or below the official CPI your personal rate sits.
If you spent $52,000 last year on your regular costs and the same things now cost $55,600, that is a $3,600 increase, or a personal inflation rate of about 6.9 percent. With official CPI at 3.1 percent, your costs are rising about 3.8 percentage points faster than the national average, so a 3 percent pay rise would leave you going backwards.
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