Inflation-Adjusted Goal Calculator
What today's savings goal looks like in future units after inflation.
Uprate a savings goal for inflation. See what today's target amount needs to be in future units. Enter today's goal and inflation rate for an instant result.
What this tool does
A 100,000 goal today isn't the same as 100,000 in 20 years — inflation erodes the real purchasing power. Enter today's goal, expected inflation rate, and years until you need the money. The tool returns the future pound amount required to match today's real purchasing power.
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
A 100,000 goal today at 3% inflation over 20 years needs to be 180,611 in future units to preserve the same real purchasing power. Planning in today's units understates the target; this tool translates to the nominal number you'll actually need.
How to use it
Enter today's goal (the purchasing power you want), expected annual inflation, and years until the money is needed. The tool returns the nominal pound amount required in the future.
Why this matters for long goals
Education funds, retirement pots, and house deposits often have horizons of 10+ years. Planning in today's units works short-term but fails long-term. A 3% inflation assumption over 25 years means the target needs to roughly double in nominal terms to maintain real value.
A worked example
Try the defaults: today's goal of 100,000, inflation rate of 3%, years of 20 years. The tool returns 180,611.12. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.
What moves the number most
The result responds to Today's Goal, Inflation Rate, and Years. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.
The formula behind this
Today's goal compounded at expected inflation for the given years. Uses annual compounding consistent with how inflation is typically reported. Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.
How to use this beyond the first run
Re-run the calculation once a year. Life changes — pay rises, new expenses, interest-rate shifts — and the figure that looked right 12 months ago often isn't today. Annual recalibration keeps the plan honest.
What this doesn't capture
The calculation assumes a steady savings rate and a stable interest rate. Real saving journeys include emergencies, windfalls, and rate changes — especially in easy-access products. The figure is a direction of travel, not a guarantee.
The inflation-adjusted future goal amount is shown above.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Today's goal compounded at expected inflation for the given years. Uses annual compounding consistent with how inflation is typically reported.
Frequently Asked Questions
What inflation rate should I use?
Does the goal really change?
Should I plan in real or nominal units?
What about deflation?
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