Reverse‑Engineer Savings by Age (Growing Contributions)
Work backward from a retirement spending goal. Contributions grow each year with salary.
Inputs
Retirement target = first‑year expenses ÷ withdrawal rate
Years to retirement
—
Target portfolio (nominal)
—
Required start contribution
—
Notes: All rates are annual, nominal. Contributions are added at end of each year. Expenses inflate until retirement; target = first‑year retirement expenses divided by the withdrawal rate.
Balance at retirement
—
% of target achieved
—
Monthly start contribution
—
Checkpoints · Balance as % of target (auto‑derived from your inputs):
One‑line chart: the series shows your projected balance only. Target is shown in
KPIs.
| Age | Year | Contribution | End‑of‑Year Balance | % of Target |
|---|