Future dollars versus inflation-adjusted dollars
A projected balance can be correct and still look misleadingly large. Future Dollars show the amount expected to appear on a future statement. Inflation-Adjusted Dollars show what that amount may buy in the planner's first projection year.
Written by James Wilson · Reviewed August 3, 2026 · Educational information, not individualized advice
Two views of the same money
Useful for matching a future account statement, withdrawal, tax estimate, or benefit payment.
Useful for asking whether the projected money supports a lifestyle comparable with the plan's starting year.
A meaningful comparison uses the same dollar basis and reference year on both sides.
A simple example
Assume $100,000 grows only with 2.5% annual inflation for 10 years. The future amount is about $128,008. That larger number still has approximately the same purchasing power as $100,000 in the reference year.
| View | Amount after 10 years | What it means |
|---|---|---|
| Future Dollars | $128,008 | The number of dollars in year 10 |
| Inflation-Adjusted Dollars | $100,000 | Purchasing power measured in the reference year |
The planner calculates the inflation-adjusted value by dividing a future balance by the cumulative inflation index:
What is the planner's reference year?
In this planner, Inflation-Adjusted Dollars are expressed in first-projection-year purchasing power. If the projection begins in 2032, the inflation-adjusted values are in 2032 dollars—not automatically in today's 2026 dollars.
This distinction matters when comparing the planner with a service that displays “today's dollars.” First confirm whether both tools use the same reference year. If they do not, convert them to a common year before comparing balances or spending.
Which view should you use?
- Use Future Dollars to understand the nominal number expected in a particular future year.
- Use Inflation-Adjusted Dollars to compare purchasing power across distant ages.
- Use the same view when comparing scenarios, planners, or market outcomes.
- Check the reference year before treating “current,” “today's,” or “real” dollars as equivalent labels.
For most long-range retirement decisions, the inflation-adjusted view is easier to interpret because it connects a future balance to a more familiar level of spending. Future Dollars remain useful for auditing year-by-year cash flows.
Common mistakes
- Comparing one planner's future balance with another planner's today's-dollar balance.
- Assuming a $1 million balance 30 years from now buys what $1 million buys now.
- Mixing current-dollar Social Security estimates with claim-year estimates.
- Changing inflation without recognizing that it affects both projected spending and the displayed purchasing-power conversion.
Related guides
Compare both views in the planner
The Scenario Summary shows the same portfolio at the horizon and ending ages in both Future Dollars and Inflation-Adjusted Dollars.
Open Retirement Income Planner