🇺🇸 United States · Retirement · FIRE · 4% Rule

Retirement Calculator 2026

FIRE number · Monthly savings needed · Corpus growth · Retirement timeline

⚡ The 4% Rule: Your FIRE number = Annual expenses × 25. Withdraw 4% annually and your portfolio has historically lasted 30+ years. $5,000/month expenses → $1.5M FIRE target.
FIRE Number
$0
total corpus needed
Monthly Savings Needed
$0
to hit FIRE number
Projected Corpus
$0
at retirement age
$
Current dollars — what you need to live on per month
$
pre-retirement7.0%
4%14%
per year3.0%
1%8%
🔥 Your FIRE Number (4% Rule)
$0
Annual expenses × 25 = corpus that can sustain withdrawals indefinitely
📈
Monthly Savings Needed to Hit FIRE
to reach your FIRE number in time
FIRE Number
4% rule target
Projected Corpus
at retirement age
Surplus / Gap
vs FIRE number
Years to FIRE
years
Real Return
after inflation
Annual Withdrawal
at 4% of FIRE num
Corpus Growth vs FIRE Target
Corpus Total Saved FIRE Target
Year-by-Year Breakdown
AgeSaved This YearTotal SavedCorpus
FIRE number = Annual expenses / 4% withdrawal rate (×25). Projections assume constant returns. Inflation adjusts the real value of money. Not financial advice.

Retirement Calculator — FIRE Number Guide

FIRE (Financial Independence, Retire Early) is built on the 4% rule: a portfolio of 25× your annual expenses historically sustains indefinite withdrawals at 4%/year, with a very high historical success rate over 30+ year periods.

⚡ FIRE Quick Reference
FIRE formulaAnnual expenses × 25
Safe withdrawal rate4% per year
$4,000/month expenses$1.2M FIRE number
$5,000/month expenses$1.5M FIRE number
$8,000/month expenses$2.4M FIRE number
Historical success rate (30yr)>95%

Types of FIRE

  • LeanFIRE: Retire on minimal expenses — under $40K/year. Very frugal lifestyle.
  • FIRE: Standard retirement on $40K–$80K/year. 25× rule applies.
  • FatFIRE: Retire with a comfortable lifestyle — $80K–$150K+/year.
  • BaristaFIRE: Semi-retire with part-time income covering some expenses.
Is the 4% rule still valid in 2026?+
The 4% rule was based on historical US data from 1925–1994. With lower expected equity returns and higher valuations, some advisors suggest 3.5% as safer. Others argue 4% remains valid for 30-year horizons. For very early retirement (40+ years), a 3.5% withdrawal rate (28.5× expenses) adds a larger buffer.
What asset allocation should I use for FIRE?+
The original 4% rule assumed a 60/40 stocks-bonds portfolio. More aggressive allocations (90% stocks) historically provided higher success rates for 40+ year retirements. A total-market index fund + international diversification is the standard FIRE portfolio. Some add a cash buffer of 1-2 years for sequence-of-returns risk.
How does Social Security affect my FIRE number?+
If you'll receive Social Security, it offsets your monthly expenses. If SSA pays $2,000/month and your expenses are $5,000/month, you only need to cover $3,000/month from portfolio ($3,000×12×25 = $900K FIRE number vs $1.5M without SS). Always factor in expected Social Security income when calculating your FIRE number.
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