Tool vs Tool

Retirement Calculator vs FIRE Calculator

Compare the Retirement Calculator with the FIRE Calculator. See how traditional retirement planning differs from the Financial Independence, Retire Early approach.

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Retirement Calculator

Estimate retirement savings, income, and how much to save monthly

Current Age

Retirement Age

Current Savings ($)

Monthly Contribution ($)

Expected Annual Return (%)

Desired Monthly Income ($)

Adjust for inflation

%/year

Total Retirement Savings at Age 65(inflation-adjusted)

$730,477

after 35 years of saving

Total Contributions

$260,000

Total Interest Earned

$470,477

Interest % of Total

64.4%

Retirement Income (4% Rule)

The 4% rule suggests withdrawing 4% of your savings annually for a sustainable retirement income over 30 years.

Annual Withdrawal

$29,219

per year from savings

Monthly Retirement Income

$2,434.92

from savings alone

Social Security Estimate

Rough estimate based on average benefits and claiming age. Actual benefits depend on your earnings history.

SS Monthly (at age 65)

$1,653.00

Total Monthly Income

$4,087.92

savings withdrawal + Social Security

Social Security by Claiming Age

Age 62

$1,271

/mo

Age 64

$1,525

/mo

Age 67

$1,907

/mo

Age 68

$2,060

/mo

Age 70

$2,365

/mo

Savings Gap Analysis

On Track

Desired Monthly Income

$4,000.00

Projected Monthly Income

$4,087.92

Progress toward goal100.0%

Your projected retirement income of $4,087.92/month exceeds your desired income of $4,000.00/month by $87.92.

Savings Growth Over Time

Contributions

Interest

$0$365K$730K

Contributions vs Interest

Contributions: 35.6%

Interest: 64.4%

Year-by-Year Growth (35 years)

Age	Year	Total Contributed	Year Interest	Balance
31	1	$56,000	$2,384	$58,384
32	2	$62,000	$2,760	$67,144
33	3	$68,000	$3,152	$76,297
34	4	$74,000	$3,562	$85,859
35	5	$80,000	$3,991	$95,850
36	6	$86,000	$4,438	$106,289
37	7	$92,000	$4,906	$117,195
38	8	$98,000	$5,395	$128,589
39	9	$104,000	$5,905	$140,494
40	10	$110,000	$6,438	$152,932
... 22 more years ...
63	33	$248,000	$28,079	$657,670
64	34	$254,000	$29,606	$693,276
65	35	$260,000	$31,201	$730,477

Key Assumptions & Notes

4% Rule: The safe withdrawal rate assumes you withdraw 4% of your total retirement savings annually. This strategy is designed to sustain your portfolio for approximately 30 years of retirement.

Social Security: Estimates are based on the 2024 average monthly benefit of approximately $1,907 at full retirement age (67). Benefits are reduced ~6.67% per year if claimed before 67, and increased ~8% per year if delayed up to age 70.

Inflation: Results are shown in today's dollars using a 2.5% annual inflation rate. The real rate of return used is 4.39%.

Disclaimer: This calculator provides estimates for educational purposes only. It does not account for taxes, market volatility, changes in contribution amounts, or individual circumstances. Consult a financial advisor for personalized retirement planning.

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FIRE Calculator

Calculate your Financial Independence, Retire Early (FIRE) number with Lean, Regular, and Fat FIRE variants, savings projections, and milestone timeline

Current Age

Target Retirement Age

Current Savings ($)

Monthly Contribution ($)

Annual Expenses ($)

Expected Return (%)

Withdrawal Rate (%)

Lean FIRE (50% expenses)

$500,000

$20,000/yr spending

Regular FIRE

$1,000,000

$40,000/yr spending

Fat FIRE (2x expenses)

$2,000,000

$80,000/yr spending

Progress to FIRE

Current savings vs FIRE number ($1,000,000)

$0Lean $500KFIRE $1.0MFat $2.0M

You can reach FIRE at age

in 15 years from now

Savings Rate

47.4%

Annual Savings

$36,000

Monthly in Retirement

$3,333

Projected at 45

$1.1M

FIRE Variant Comparison

Variant	Target	Annual Spend	Monthly Spend	Progress
Lean FIRE	$500,000	$20,000	$1,667	10.0%
Regular FIRE	$1,000,000	$40,000	$3,333	5.0%
Fat FIRE	$2,000,000	$80,000	$6,667	2.5%

Savings Growth Projection

Pre-FIRE

Post-FIRE

$0$4.4M$8.7M

FIRE target ($1,000,000) reached at 11% of max projection

Savings Rate vs Years to FIRE

How your savings rate impacts your timeline to financial independence.

20% saved

26 yrs

30% saved

21 yrs

40% saved

17 yrs

Current

50% saved

14 yrs

60% saved

11 yrs

70% saved

8 yrs

80% saved

5 yrs

Year-by-Year Projection

Age	Year	Total Savings	Contributed	Year Interest
31	1	$91,009	$86,000	$5,009
32	2	$134,983	$122,000	$7,974
33	3	$182,135	$158,000	$11,153
34	4	$232,697	$194,000	$14,561
35	5	$286,913	$230,000	$18,216
36	6	$345,048	$266,000	$22,136
37	7	$407,387	$302,000	$26,338
38	8	$474,231	$338,000	$30,845
39	9	$545,908	$374,000	$35,677
40	10	$622,766	$410,000	$40,858
... 27 more years ...
68	38	$7,530,359	$1,418,000	$506,544
69	39	$8,112,124	$1,454,000	$545,765
70	40	$8,735,945	$1,490,000	$587,821

About the FIRE Movement

FIRE Number: The amount you need saved so that your investment withdrawals cover your annual expenses. Calculated as Annual Expenses / Withdrawal Rate.

4% Rule: Based on the Trinity Study, a 4% annual withdrawal rate has historically sustained portfolios for 30+ years. Adjust the withdrawal rate for more conservative (3-3.5%) or aggressive (4.5-5%) plans.

Lean FIRE: Covers only essential expenses (50% of current). Fat FIRE: Allows for a more comfortable lifestyle (2x current expenses).

Savings Rate: The single most important factor for reaching FIRE. Higher savings rates dramatically reduce the number of working years needed.

Disclaimer: This calculator is for educational purposes. It does not account for inflation, taxes, market volatility, or individual circumstances. Consult a financial advisor for personalized planning.

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Detailed Comparison

The Retirement Calculator and the FIRE Calculator both project when you can stop working, but they are built on different philosophies and assumptions. A traditional Retirement Calculator assumes you will work until a conventional retirement age (typically 62-67), factors in Social Security benefits, employer 401(k) matches, and pension income, and calculates whether your savings will last through a standard 25-30 year retirement.

The FIRE (Financial Independence, Retire Early) Calculator flips the script. It asks: given your current savings rate and expenses, how quickly can you accumulate 25-30 times your annual spending so that a 4% safe withdrawal rate covers your lifestyle indefinitely? FIRE adherents often target retirement in their 30s or 40s, which means planning for a 50-60 year retirement — far longer than traditional models assume.

The math is similar but the inputs and assumptions differ dramatically. FIRE calculators emphasize savings rate as the most important variable, while traditional retirement calculators focus on contribution amounts and expected returns. FIRE models typically exclude Social Security (since early retirees cannot access it for decades) and assume no employer pension.

When to Use Each Tool

When to Use Retirement Calculator

Use the Retirement Calculator if you are planning for a traditional retirement timeline (age 55-67), want to factor in Social Security and employer benefits, and need to know whether you are saving enough to maintain your current lifestyle through a standard-length retirement.

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When to Use FIRE Calculator

Use the FIRE Calculator if you want to retire before age 50, are willing to optimize your savings rate aggressively, and want to know your exact FIRE number — the portfolio size that lets you live off investment returns indefinitely using the 4% rule.

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Our Verdict

Planning to work until your 60s with traditional benefits? The Retirement Calculator is built for you. Targeting financial independence in your 30s or 40s? The FIRE Calculator speaks your language. If you are somewhere in between, run both to see how increasing your savings rate accelerates your timeline.

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Retirement Calculator vs FIRE Calculator