retirement calculator

Plan your financial future with precision: calculate how much money you need to retire comfortably or achieve financial independence (FIRE).

Primary Levers

Target Retirement Age50

Current Age

Current Portfolio

Monthly Savings Addition

Market Assumptions

Expected ROI (Nominal)8%

Expected Inflation3%

Safe Withdrawal Rate4%

Projected Portfolio

$585,104

Inflation Reality Check

Monthly Paycheck Translator

$1,950 / mo

Passive Income for Life (4% Safe Withdrawal Rate)

Retirement Age

In 20 years

Capital Depletion vs. Endless Wealth

Your money outlives you.

How to Use the Retirement & Pension Planning Calculator

Step-by-step guide to calculating retirement nest egg requirements, safe withdrawal rates, and FIRE milestones.

Select Planning Mode: Traditional or FIRE

Choose "Traditional" to calculate your portfolio size at a chosen retirement age, or "FIRE Mode" to discover the exact age you can retire based on desired income.

Input Current Age & Assets

Enter your present age and current invested retirement capital across 401(k), IRA, pension funds, and brokerage accounts.

Set Monthly Savings & Expected ROI

Specify your ongoing monthly contributions and realistic annualized investment return (typically 6% to 8%).

Configure Inflation & Safe Withdrawal Rate (SWR)

Input expected inflation and your annual safe withdrawal percentage (commonly 3.5% to 4.0% based on the Trinity Study).

Toggle Inflation Reality Check

Switch between nominal figures and inflation-adjusted today's purchasing power to see what your future nest egg can actually buy.

Review Paycheck Translator & Depletion Curves

Examine monthly post-retirement passive income, capital sustainability curves, and portfolio longevity over your lifespan.

Frequently Asked Questions

Expert guidance on the 4% rule, safe withdrawal rates, inflation drag, and lifelong portfolio survival.

Q:What is the 4% Rule and how is it used in retirement planning?

Originating from the Trinity Study, the 4% rule suggests you can safely withdraw 4% of your initial retirement portfolio in your first year of retirement, and adjust that dollar amount for inflation annually, with high probability of lasting 30 years.

Q:What is the difference between Nominal ROI and Real ROI?

Nominal ROI is the raw percentage return before inflation. Real ROI subtracts inflation, reflecting the true expansion in purchasing power. For instance, an 8% return with 3% inflation yields a 5% real return.

Q:How do I calculate my FIRE (Financial Independence, Retire Early) Number?

Your FIRE Number equals your desired annual retirement spending divided by your Safe Withdrawal Rate (e.g., $40,000 / 0.04 = $1,000,000, or 25 times your annual expenses).

Q:What is Sequence of Returns Risk (SRR)?

Sequence of returns risk is the hazard that market downturns occur in the early years of retirement while you are withdrawing money, accelerating portfolio depletion much faster than average returns would suggest.

Q:Should early retirees use a lower withdrawal rate (e.g., 3.25% - 3.5%)?

Yes. Because early retirees may need their portfolio to last 40 to 50 years rather than traditional 30-year horizons, financial planners recommend a conservative withdrawal rate between 3.25% and 3.5%.

Q:How does state pension or Social Security impact my required nest egg?

Government or company pensions reduce the annual withdrawal burden on your personal portfolio, effectively lowering your required retirement capital.

FV = P ×

(1 + r)ⁿ - 1 r

FV: Future Value of the savings.
P: Periodic contribution amount.
r: Interest rate per period.
n: Total number of payment periods.

What is retirement calculator?

Plan your financial future with precision: calculate how much money you need to retire comfortably or achieve financial independence (FIRE). This comprehensive Retirement Calculator allows you to toggle between two core philosophies: Traditional (Age -> Portfolio) and FIRE Mode (Target Income -> Age). By adjusting your Primary Levers—such as Target Retirement Age, Current Age, Current Portfolio, and Monthly Savings Addition—the algorithm builds your growth trajectory. In the Market Assumptions panel, you define the Expected ROI (Nominal), Expected Inflation, and your Safe Withdrawal Rate. The dashboard instantly reveals your PROJECTED PORTFOLIO and features an Inflation Reality Check toggle to show your purchasing power in today's dollars. The Monthly Paycheck Translator converts your nest egg into a tangible monthly income stream (e.g., Passive income for life), while the Capital Depletion vs. Endless Wealth chart visually confirms if your money outlives you under both Conservative (4% Real) and Optimistic (7% Real) scenarios.

Practical Calculation Example (Tech Worker in Austin, Texas)

A 30-year-old software engineer in Austin currently has a Current Portfolio of $50,000 in their 401(k) and IRA. They want to retire by age 50 (Target Retirement Age). By committing to a Monthly Savings Addition of $1,500, they use the calculator to project their future. Assuming an Expected ROI (Nominal) of 8% and 3% Expected Inflation, their PROJECTED PORTFOLIO grows substantially. The Monthly Paycheck Translator shows that using a 3.3% Safe Withdrawal Rate, they will generate a sustainable passive income of $1,609/mo in today's purchasing power. The chart confirms their strategy creates "Endless Wealth."

Reference Zones (Retirement Metrics)

Interface Element	Financial Function	Practical Application
Traditional vs. FIRE Mode	Strategy Selection	Switches the math from "How much will I have at 65?" to "When can I quit working if I need $4k/month?"
Inflation Reality Check	Purchasing Power	Strips away the illusion of nominal growth, showing you what your future millions will actually buy today.
Monthly Paycheck Translator	Cashflow Conversion	Turns a massive, abstract portfolio number into a practical monthly "salary" you can budget with.
Capital Depletion vs. Endless Wealth	Longevity Risk	Visualizes whether you are slowly draining your principal or living purely off the generated interest.

History and Origin

In the United States, the concept of retirement shifted dramatically in the 1980s. Historically, workers relied on company-funded pensions (defined benefit plans) and Social Security, established in 1935. However, the introduction of the 401(k) in 1978 transferred the investment risk from the employer to the employee. This gave rise to a massive industry of mutual funds and personal finance planning. In the 2010s, the FIRE (Financial Independence, Retire Early) movement emerged from online communities, popularizing the use of the "4% Rule" (from the Trinity Study) to escape the traditional 65-year retirement age.