Future Cost Projector
Project what any current expense will cost in the future at a given inflation rate.
Cost at Multiple Time Horizons
| Years | Projected Cost | Increase | % Increase |
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Compare Inflation Rates
| Rate | Future Cost | Increase |
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This tool is for informational and educational purposes only. It is not a substitute for professional financial, medical, legal, or engineering advice. See Terms of Service.
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This calculator projects what any expense will cost in the future based on a given annual inflation rate. Here is how to use it:
- Enter the current cost. This can be any expense: monthly rent, annual tuition, a medical procedure, or the price of a car.
- Set the inflation rate. The historical US average is about 3%. Recent years have been higher (4-8%). Use 3% for conservative long-term planning, or adjust based on the category (healthcare and education tend to inflate faster at 5-7%).
- Set the number of years. Common horizons: 5 years (short-term planning), 10 years (career planning), 20 years (college savings), 30 years (retirement).
- Review the projections. The tool shows the projected cost, a time horizon comparison table, and a rate comparison table.
About Future Cost Projections
Future cost projections use compound growth: each year's increase is based on the previous year's cost, not the original cost. This means costs accelerate over time. At 3% inflation, costs double in about 24 years. At 5%, they double in about 14 years. At 7%, they double in about 10 years.
Why This Matters
Long-term financial planning requires accounting for inflation. A comfortable retirement that costs $50,000/year today will cost about $90,000/year in 20 years at 3% inflation, and about $133,000/year at 5%. College tuition that costs $30,000/year for a newborn will cost roughly $54,000/year when they turn 18 at 3% inflation. This calculator helps you plan for these future costs so you can save and invest accordingly.
Frequently Asked Questions
What inflation rate should I use for planning?
For general planning, 3% is a reasonable long-term estimate (close to the historical US average). For healthcare costs, use 5-7% (medical inflation consistently outpaces general inflation). For college tuition, use 5-6%. For housing in high-growth areas, consider 4-5%. For conservative planning, use a rate slightly above the recent average.
How long does it take for costs to double?
Use the Rule of 72: divide 72 by the inflation rate to estimate doubling time. At 2% inflation, costs double in ~36 years. At 3%, ~24 years. At 5%, ~14 years. At 7%, ~10 years. At 10%, ~7 years. This rule gives a quick mental estimate for any compound growth rate.
Can I predict exact future prices?
No. This calculator shows projections based on a constant assumed inflation rate. Actual inflation varies year to year and differs by category. These projections are useful for financial planning and "what if" scenarios, but they are estimates, not predictions. The longer the time horizon, the more uncertainty there is in any projection.