FIRE Calculator
USA 2026

FIRE (Financial Independence, Retire Early) means building enough investments to cover your living expenses indefinitely through passive income and withdrawals. In the US, FIRE planning involves leveraging tax-advantaged accounts like 401(k), IRA, Roth IRA, and HSA, while factoring in Social Security benefits at age 62-70. The standard approach uses the 4% safe withdrawal rate, meaning you need 25 times your annual expenses saved to reach financial independence.

Using the 4% rule, you need 25 times your annual expenses. If you spend $50,000 per year, your FIRE number is $1,250,000. Social Security benefits (averaging $1,907/month at 67) can reduce your required portfolio. A couple both receiving average Social Security could reduce their portfolio needs by $400,000 to $600,000, depending on when they start collecting.

The 401(k) allows pre-tax contributions up to $23,500 in 2026 ($31,000 if over 50), reducing your current tax bill and growing tax-deferred. The Roth IRA allows tax-free growth and withdrawals with contributions accessible penalty-free anytime. Traditional IRA contributions may be tax-deductible. A common FIRE strategy is to maximize 401(k) employer match first, then max Roth IRA, then go back to max 401(k).

Yes, there are several strategies. Roth IRA contributions (not gains) can be withdrawn anytime tax and penalty-free. The Rule of 55 allows penalty-free 401(k) withdrawals if you leave your job at 55 or later. Substantially Equal Periodic Payments (SEPP/72t) allow penalty-free withdrawals at any age. The Roth conversion ladder lets you access converted funds after a 5-year waiting period.

The 4% rule, based on the Trinity Study, states that withdrawing 4% of your portfolio in the first year of retirement, then adjusting annually for inflation, has a high probability of lasting 30+ years. On a $1,000,000 portfolio, you would withdraw $40,000 in year one. Some modern research suggests 3.5% may be more appropriate given current market valuations and longer retirement horizons for early retirees.

Social Security provides income starting as early as 62 (with a 30% reduction) or as late as 70 (with a 24% increase over full retirement age). The average benefit at 67 is approximately $1,907/month. Delaying to 70 increases this significantly. Social Security effectively reduces your FIRE number because it replaces a portion of your expenses. Many early retirees plan to bridge from their portfolio to Social Security.

Lean FIRE means living on $25,000 to $40,000 per year, requiring $625,000 to $1,000,000. This works best in low-cost areas of the Midwest or South. Fat FIRE means $100,000+ per year, requiring $2,500,000+, allowing for a comfortable lifestyle in any city. Most American FIRE aspirants target Regular FIRE at $40,000 to $60,000 per year.

The HSA (Health Savings Account) is the only triple-tax-advantaged account: tax-deductible contributions ($4,300 individual/$8,550 family in 2026), tax-free growth, and tax-free withdrawals for medical expenses. After 65, HSA funds can be withdrawn for any purpose (taxed as income, like a Traditional IRA). Many FIRE planners maximize HSA contributions, invest the funds, and pay medical expenses out of pocket to let the HSA grow.

Your savings rate is the single most important variable. At a 10% savings rate, financial independence takes roughly 51 years. At 25%, about 32 years. At 50%, approximately 17 years. At 75%, just 7 years. This is because a higher savings rate simultaneously increases contributions and proves you can live on less. Even increasing from 15% to 25% can cut over a decade off your timeline.

With US mortgage rates around 6.5-7% in 2026, the math is close to break-even with long-term stock market returns. Paying off a mortgage guarantees a risk-free return equal to your interest rate and lowers your annual expenses, reducing your FIRE number. However, mortgage interest is tax-deductible, and investing the money may build wealth faster. Many FIRE planners keep the mortgage if the rate is below 4% and pay it off if above 5%.