Retirement / 401(k) Calculator
Estimate your nest egg at retirement and whether it can replace your income later in life.
About this calculator
Projects your retirement nest egg by compounding your current savings and monthly contributions (including employer match) at an assumed pre-retirement return until your target retirement age. It then estimates the sustainable annual income that nest egg can provide over your years in retirement, and compares it to your inflation- adjusted income target. Estimates are simplified — they assume constant returns and ignore taxes, Social Security, and required minimum distributions.
Field explanations
- Current age
- Your age today.
- Retirement age
- The age you plan to stop working and begin drawing income.
- Current annual salary
- Used as the basis for income replacement and the employer match.
- Current retirement savings
- Your existing balance across 401(k), IRA, and other retirement accounts.
- Monthly contribution
- How much you (the employee) add to retirement accounts each month.
- Employer match
- Employer contribution expressed as a percent of your salary (e.g. 3%).
- Pre-retirement return
- Expected average annual return while you are still saving and investing.
- Post-retirement return
- Expected average annual return during retirement (usually more conservative).
- Inflation rate
- Used to grow your income target into future dollars and convert returns to real growth.
- Years in retirement
- How long the nest egg needs to last (e.g. 25–30 years).
- Income replacement ratio
- Percent of your current salary you'd like to replace in retirement. 70–85% is a common rule of thumb.