Free Retirement Savings Planner
See how your current savings and monthly contributions could grow over time. Uses compound interest to project your nest egg and estimates monthly retirement income using the 4% rule. Planning for retirement is one of the most important financial decisions you will make, and our calculator helps you visualize different savings scenarios to set realistic goals.
How Retirement Projections Work
The calculator takes your current savings balance, monthly contributions, expected annual return rate, and the number of years until retirement. It compounds your savings monthly using your expected return rate, showing how small regular contributions can grow substantially over decades thanks to compound interest. After projecting your total nest egg at retirement, it estimates your monthly withdrawal amount using the 4% rule, which suggests you can withdraw 4% of your portfolio annually with a low risk of running out of money over a 30-year retirement.
Features
- Future value projection with monthly contribution modeling
- Total contributions versus investment growth visual breakdown
- Estimated monthly retirement income based on the 4% withdrawal rule
- Customizable expected annual return rate and withdrawal rate
- Year-by-year growth trajectory display
- All calculations done locally with no data uploads
Key Factors That Affect Your Retirement Savings
The three most important variables in retirement planning are your savings rate, investment returns, and time horizon. Starting early gives your investments more time to compound. Increasing your monthly contribution by even a small amount can significantly impact your final nest egg. Your expected return rate should be realistic based on your asset allocation. Our calculator lets you adjust all these variables to see how changes in your savings strategy affect your retirement outcome.
Disclaimer
This calculator provides estimates for informational purposes only. Past performance does not guarantee future results. Investment returns will vary based on market conditions, asset allocation, and fees. Not financial advice. Consult a qualified financial advisor for personalized retirement planning guidance.
Important Planning Limitations
Retirement projections depend heavily on assumptions. Market returns vary, inflation reduces purchasing power, fees lower balances, taxes affect withdrawals, and retirement spending can change over time. The 4% rule is a historical rule of thumb, not a guarantee.
Quick Answer
Use the calculator to compare savings rate, time horizon, and expected return scenarios. For real retirement decisions, review the output with a qualified financial planner or fiduciary advisor.
Last reviewed: July 2026.