Retirement Savings Calculator
A simple interactive retirement planning calculator for testing contribution, employer match, Social Security, and projected retirement income scenarios.
What it does
The calculator lets you adjust:
- current age and retirement age
- annual income and current retirement savings
- annual contribution percentage
- employer match rate and match cap
- whether estimated Social Security is included
It then projects savings growth over time and estimates monthly retirement income using a simplified 4% withdrawal rule.
Why it exists
This is a lightweight personal-finance sandbox: fast enough to change assumptions directly, explicit enough to show the contribution mechanics, and simple enough to treat as a planning aid rather than financial advice.
Stack
- Next.js
- React
- Tailwind
- Recharts
- static export embedded in the Jekyll personal site
Links
- Live: ethanhn.com/retirement-calculator
- Source: private GitHub repository