Retirement Calculator

How to Estimate Your Retirement Savings?

Retirement planning starts with four numbers: your current age, target retirement age, current savings, and monthly contribution. The calculator above projects your total savings at retirement, compares it against the amount needed to sustain your desired monthly income using the 4% withdrawal rule, and tells you whether you are on track or falling short. If a gap exists, it shows exactly how much additional monthly saving closes that gap. Run multiple scenarios by adjusting your retirement age or contribution to find a plan that fits your budget.

The 4% Rule: How Much Do You Need to Retire?

The 4% rule states that withdrawing 4% of your portfolio in the first year of retirement, then adjusting for inflation each subsequent year, gives your money a high probability of lasting 30 years. To generate $5,000 per month ($60,000/year) in retirement income, you need $60,000 / 0.04 = $1,500,000 in savings. For $4,000/month: $1,200,000. For $3,000/month: $900,000. Social Security benefits reduce the amount your portfolio needs to provide. If Social Security covers $2,000/month, you only need portfolio income of $3,000/month, requiring $900,000 instead of $1,500,000.

Starting at 25 vs 35 vs 45: The Cost of Waiting

At 7% average annual return, reaching $1,000,000 by age 65 requires: starting at 25 - $381/month over 40 years ($182,880 contributed). Starting at 35 - $820/month over 30 years ($295,200 contributed). Starting at 45 - $1,920/month over 20 years ($460,800 contributed). The 45-year-old contributes 2.5 times more money than the 25-year-old yet reaches the same destination. Each decade of delay roughly doubles the required monthly contribution because you lose the most powerful compounding years at the end of the growth curve.

What Rate of Return Should You Assume?

The S&P 500 has returned approximately 10% annually over the last 50 years in nominal terms, or about 7% after inflation. Conservative planners use 6-7% for stock-heavy portfolios. A blended portfolio of 60% stocks and 40% bonds has historically returned approximately 8% nominal or 5% real. Using a lower assumed return builds in a safety margin - if markets outperform, you retire with more than planned rather than less. Avoid using returns above 8% in planning; optimistic assumptions create dangerous confidence that leads to undersaving.

Social Security and Its Role in Retirement Income

The average Social Security benefit is approximately $1,900 per month. The maximum benefit at full retirement age (67 for those born after 1960) is roughly $3,800/month. Claiming early at 62 permanently reduces the benefit by up to 30%. Delaying until 70 increases it by 24% over the full retirement age amount. For a married couple where both worked, combined benefits might reach $3,000-$6,000/month. These payments are inflation-adjusted and guaranteed for life, making Social Security the foundation of most retirement plans. The calculator results should be viewed alongside your estimated Social Security benefit for a complete picture.

How Does Inflation Erode Retirement Savings?

At 3% annual inflation, $1,000,000 in today purchasing power equals roughly $554,000 in 20 years and $412,000 in 30 years. A retiree spending $5,000/month in year one needs $6,720/month in year 10 and $9,030/month in year 20 to maintain the same lifestyle. This is why retirement portfolios must continue growing during retirement, not just preserve capital. A portfolio entirely in cash or low-yield bonds loses purchasing power every year. Most financial advisors recommend maintaining 40-60% stock allocation even in retirement to outpace inflation over a 20-30 year retirement horizon.

Catch-Up Strategies for Late Starters

Workers over 50 can contribute an extra $7,500 to a 401(k) (above the $23,500 standard limit) and an extra $1,000 to an IRA. Maximizing these catch-up provisions adds $8,500 per year to tax-advantaged savings. Beyond retirement accounts: aggressively paying off the mortgage before retirement eliminates the largest monthly expense. Downsizing from a $400,000 home to a $250,000 home frees $150,000 in equity. Working 2-3 extra years has a triple benefit - more saving years, fewer spending years, and higher Social Security benefits from delayed claiming.

Retirement Account Types Compared

Traditional 401(k) and IRA: contributions are tax-deductible now, withdrawals are taxed in retirement. Best when your current tax bracket is higher than your expected retirement bracket. Roth 401(k) and Roth IRA: contributions are after-tax, but all withdrawals (including growth) are completely tax-free. Best when your current bracket is lower than expected future rates. HSA (Health Savings Account): contributions are tax-deductible, growth is tax-free, and withdrawals for medical expenses are tax-free - triple tax advantage. After age 65, HSA withdrawals for any purpose are taxed like a traditional IRA. Using a combination of account types provides tax diversification that gives you flexibility to manage taxable income in retirement.

Frequently asked questions