🏖️ Retirement Savings Calculator

Planning for Retirement

Retirement planning means building a portfolio large enough to replace your working income for 20–30+ years after you stop working. The core challenge is that you're planning for an uncertain future — unknown lifespan, healthcare costs, inflation, and market returns. This calculator models your trajectory using compound growth projections, giving you a realistic estimate of where you'll land if you maintain your current savings rate.

Most financial planners recommend saving between 10% and 15% of gross income for retirement throughout your career. If you're starting late or have ambitious retirement goals, 20%+ may be necessary. The exact number depends on your expected retirement age, target lifestyle, Social Security income, and pension benefits if applicable.

How Much Do You Need to Retire?

The most widely used framework is the 4% Rule (also called the Safe Withdrawal Rate), derived from the Trinity Study. It suggests that a retiree can withdraw 4% of their portfolio in the first year, then adjust for inflation each year, with a historically high probability of not running out of money over a 30-year retirement. The formula to find your target nest egg is simple:

• Annual retirement income needed × 25 = Target portfolio
• Need $50,000/year? Target: $1,250,000
• Need $80,000/year? Target: $2,000,000
• Need $100,000/year? Target: $2,500,000

Remember that Social Security benefits reduce how much your portfolio must cover. The average Social Security benefit as of 2024 is around $1,900/month — factor this into your income gap calculation.

The Power of Starting Early

Consider two people who both earn 7% annual returns and retire at 65. Sarah starts at 25, contributing $500/month. Tom starts at 40, contributing $1,500/month. Sarah invests $240,000 total over 40 years and accumulates ~$1.3 million. Tom invests $450,000 over 25 years and accumulates ~$1.2 million. Sarah invested less than half the money and still came out ahead — the mathematics of compounding reward patience dramatically.

Tax-Advantaged Retirement Accounts

• 401(k) / 403(b): Employer-sponsored plans with 2024 contribution limits of $23,000 ($30,500 if 50+). Many employers match contributions — always capture the full match first.
• Traditional IRA: Tax-deductible contributions up to $7,000/year ($8,000 if 50+). Withdrawals taxed as ordinary income in retirement.
• Roth IRA: After-tax contributions, but all growth and qualified withdrawals are tax-free. Ideal if you expect to be in a higher tax bracket in retirement.
• HSA (Health Savings Account): Triple tax advantage — deductible contributions, tax-free growth, tax-free withdrawals for medical expenses. Often overlooked as a retirement vehicle.

Asset Allocation by Age

A simple rule of thumb: subtract your age from 110 to get your stock allocation percentage (the rest in bonds). At 30, hold 80% stocks and 20% bonds. At 60, hold 50% stocks and 50% bonds. This shifts you toward capital preservation as retirement approaches. Target-date funds automate this rebalancing and are a solid choice for most retirement investors who prefer simplicity.

Frequently Asked Questions

What if I started saving for retirement late? If you're 45+ and behind, maximize your 401(k) and IRA contributions, consider delaying retirement by a few years (dramatically increases Social Security benefits and portfolio size), reduce expected lifestyle costs, and consider working part-time in early retirement to reduce portfolio withdrawals.

How does inflation affect retirement savings? Inflation erodes purchasing power over time. A 3% annual inflation rate means $100,000 today will only buy what $55,000 buys in 20 years. Factor this in by either using an inflation-adjusted return rate (nominal rate minus inflation) or targeting a larger nest egg than today's dollars suggest.

Should I pay off my mortgage before retiring? Entering retirement mortgage-free reduces your monthly income needs significantly and eliminates a major financial risk. However, if your mortgage rate is low (3–4%) and your portfolio earns more, the math may favor investing over prepaying. The psychological comfort of no mortgage debt is also a legitimate factor.