What Is a Retirement Calculator?
A retirement calculator is a financial planning tool that estimates how much money you need to save to maintain your desired lifestyle after you stop working. By factoring in your current age, savings, monthly contributions, expected investment returns, inflation, and retirement income sources like Social Security, it projects whether your nest egg will last through your retirement years. Our free retirement calculator provides inflation-adjusted projections, year-by-year accumulation and withdrawal schedules, and visual charts to help you plan with confidence.
Whether you are just starting your career or approaching retirement, understanding your retirement readiness is essential. Even small adjustments to your savings rate, retirement age, or investment strategy can have a dramatic impact on your financial security in retirement. This calculator helps you explore different scenarios and find the right plan for your goals.
How to Use This Retirement Calculator
- 1
Enter Your Personal Information
Start with your current age, target retirement age, and life expectancy. These determine the length of your accumulation phase (saving years) and withdrawal phase (retirement years).
- 2
Input Your Savings and Contributions
Enter your current retirement savings across all accounts (401(k), IRA, Roth IRA, brokerage) and how much you plan to contribute each month. Include employer matching contributions in your monthly amount.
- 3
Set Return and Inflation Rates
Choose your expected pre-retirement return rate (typically 7-10% for stock-heavy portfolios), post-retirement return rate (3-5% for conservative allocations), and expected inflation rate (historically around 3% in the US).
- 4
Define Your Retirement Income Needs
Enter your desired monthly income in today's dollars, expected Social Security benefits, and any other income sources like pensions or rental income. The calculator adjusts all amounts for inflation automatically.
- 5
Review Your Retirement Projection
Click Calculate to see your projected nest egg, whether your savings will last, and detailed year-by-year tables for both the accumulation and withdrawal phases. Adjust inputs to explore different scenarios.
Key Retirement Planning Factors
Time Horizon
The number of years until retirement is the single most powerful variable. Starting early gives compound interest more time to work, dramatically reducing the monthly savings needed.
Investment Returns
Your portfolio's rate of return significantly impacts your nest egg. A diversified stock portfolio has historically returned 7-10% annually, but past performance does not guarantee future results.
Inflation
Inflation erodes purchasing power over time. At 3% annual inflation, $5,000 today will need to be $11,300 in 28 years to buy the same goods. Always plan with inflation-adjusted numbers.
Social Security
Social Security provides a baseline income in retirement. The average monthly benefit is approximately $1,900 (2025). Delaying benefits past age 62 increases your monthly payment significantly.
Healthcare Costs
Healthcare is often the largest retirement expense. The average retired couple may need $315,000+ for healthcare costs not covered by Medicare. Factor this into your desired monthly income.
Withdrawal Strategy
The 4% rule suggests withdrawing 4% of your portfolio in year one, then adjusting for inflation. This strategy historically sustained portfolios for 30+ years, but individual circumstances vary.
Retirement Savings Benchmarks by Age
Financial advisors commonly recommend these savings milestones relative to your annual salary. These are general guidelines and your actual needs may differ based on lifestyle, location, and retirement goals.
Retirement Account Types
401(k) / 403(b)
Employer-sponsored retirement plans with pre-tax contributions that reduce your taxable income. Many employers offer matching contributions, which is essentially free money. The 2025 contribution limit is $23,500 ($31,000 if age 50+). Withdrawals in retirement are taxed as ordinary income.
Traditional IRA
An individual retirement account with tax-deductible contributions (subject to income limits if you have an employer plan). Investments grow tax-deferred, and withdrawals in retirement are taxed as ordinary income. The 2025 contribution limit is $7,000 ($8,000 if age 50+).
Roth IRA
Contributions are made with after-tax dollars, but qualified withdrawals in retirement are completely tax-free. This makes Roth IRAs especially valuable if you expect to be in a higher tax bracket in retirement. Income limits apply for direct contributions. The 2025 limit is $7,000 ($8,000 if age 50+).
Health Savings Account (HSA)
Often called the "triple tax advantage" account: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. After age 65, HSA funds can be used for any purpose (taxed as income, similar to a Traditional IRA).