Retirement Calculator
Retirement Calculator calculates projected balance; target need; gap/surplus; sustainable years. Enter your assumptions above to get the primary answer first, followed by supporting metrics and detail where useful.
Inputs
Retirement CalculatorResults
Adjust the inputs, then use the primary action. The result will appear here.
What this calculator answers
Retirement Calculator calculates projected balance; target need; gap/surplus; sustainable years. Enter your assumptions above to get the primary answer first, followed by supporting metrics and detail where useful.
How this calculation works
This tool uses age; retirement age; savings; contributions; returns pre/post; inflation; retirement spending/income. It returns projected balance; target need; gap/surplus; sustainable years. Headline results, charts, schedules, comparisons and exports are generated from the same normalized calculation state.
Worked example
Projected retirement balance: 1,625,795.87 • Modeled target need: 2,000,000 • Projected gap: 374,204.13
Assumptions
Unless the tool says otherwise, rates are annual percentages, currency inputs are denominations rather than automatic FX conversions, and projections are mathematical models rather than guarantees. Typed values remain authoritative even outside normal slider ranges.
Limitations
Results depend on the assumptions supplied. Real-world taxes, fees, rates, timing and provider rules can differ from simplified modeled inputs.
Sources & review
Changing-rule tools cite the official source, jurisdiction/effective period and verification date. Evergreen formula pages document their calculation method and review date. Last reviewed: 2026-09-25.
Privacy and review status
Financial inputs stay on this device by default and are not placed into analytics, advertising or error payloads. Review the methodology or report a calculation issue if something looks wrong. Methodology · Report a calculation issue.
Common questions
What does the Retirement Calculator calculate?
It calculates projected balance; target need; gap/surplus; sustainable years. The result is based on the inputs and assumptions shown on this page.
What inputs does the Retirement Calculator use?
The main inputs are age; retirement age; savings; contributions; returns pre/post; inflation; retirement spending/income. Change them to model a different scenario.