How to Use This Calculator
- 1
Input Your Initial Retirement Savings
Enter the total amount of money you have available at the start of your retirement — your nest egg that will fund withdrawals.
- 2
Specify Your Annual Withdrawal Amount
Indicate how much you plan to withdraw each year. This should reflect your estimated annual living expenses.
- 3
Enter Your Expected Annual Rate of Return
Provide the anticipated average annual return on your remaining savings. A realistic rate is often 4-6%.
- 4
Set Your Years in Retirement
Define how many years you expect to draw from your savings. This directly impacts portfolio longevity projections.
- 5
Review Your Portfolio Analysis
The calculator displays Ending Balance, Withdrawal Rate, Sustainable Annual Withdrawal, Total Investment Growth, Total Withdrawn, and Portfolio Longevity. The insights panel shows 4% rule assessment, sustainable withdrawal comparison, and growth vs. withdrawals analysis. A chart and year-by-year table visualize the drawdown.
Example Calculation
A new retiree with $500,000 in savings plans to withdraw $30,000 annually, expecting a 5% average return over 20 years.
Initial Retirement Savings
$500,000
Annual Withdrawal Amount
$30,000
Annual Rate of Return
5%
Years in Retirement
20
Results
Ending Balance
$334,670
Withdrawal Rate
6.00%
Sustainable Withdrawal
$40,121
Total Growth
$434,670
Total Withdrawn
$600,000
Portfolio Longevity
Lasts full 20 years
Insights card shows 4% rule assessment, sustainable withdrawal comparison, and growth vs.
Tips
Adjust for Inflation Annually
Your $30,000 withdrawal today will have less purchasing power in 20 years. Consider increasing withdrawals by 2-3% annually and re-run the calculator to see the impact on your ending balance.
Understand the 4% Rule
The 4% rule suggests withdrawing 4% of your initial balance ($20,000 on $500,000) for a high probability of lasting 30 years. The default 6% rate ($30,000 on $500,000) is above this guideline — the insights panel flags this.
Stress Test with Lower Returns
Test with 2-3% returns to see how a bear market affects your portfolio. With $500,000 and $30,000 withdrawals at 3% return, the ending balance drops significantly compared to 5%.
Compare Scenarios with History
Try different savings amounts, withdrawal levels, and return rates. The recent calculations history lets you compare scenarios to find the optimal balance between spending and preservation.
Optimizing Your Retirement Income Drawdown Strategy
The Retirement Drawdown Calculator is essential for retirees and those nearing retirement, providing critical insights into the longevity and sustainability of your savings. It projects how long your nest egg will last based on withdrawal strategy, expected returns, and retirement duration.
With $500,000 in savings, $30,000 annual withdrawals, and a 5% return over 20 years, the portfolio ends with $334,670 remaining — demonstrating that a 6% withdrawal rate is sustainable over this period at this return rate.
The Dynamics of Retirement Portfolio Drawdown
Each year, your remaining balance grows by the annual rate of return, then the withdrawal is deducted:
ending balance = (opening balance x (1 + annual rate of return)) - annual withdrawal
withdrawal rate = annual withdrawal / initial savings x 100
sustainable withdrawal = savings x (r x (1 + r)^n) / ((1 + r)^n - 1)
Where r is the annual rate and n is years in retirement.
The sustainable withdrawal formula calculates the maximum annual amount that fully depletes the portfolio over exactly n years.
Projecting a 20-Year Drawdown for a Retiree
A retiree with $500,000 in savings, withdrawing $30,000 annually at a 5% expected return over 20 years.
Year 1:
- Opening Balance: $500,000
- Investment Growth: $500,000 x 0.05 = $25,000
- Withdrawal: $30,000
- Closing Balance: $500,000 + $25,000 - $30,000 = $495,000
Year 10:
- Opening Balance: $444,867
- Growth: $22,243
- Closing Balance: $437,111
Year 20:
- Opening Balance: $347,305
- Growth: $17,365
- Closing Balance: $334,670
Key results:
- Ending Balance: $334,670 (67% of initial savings preserved)
- Withdrawal Rate: 6.00% (above 4% rule, but sustainable at this return)
- Sustainable Withdrawal: $40,121/yr (maximum for full depletion over 20 years)
- Total Investment Growth: $434,670
- Total Withdrawn: $600,000
Risk and Market Context for Retirement Drawdown
Navigating retirement drawdown in 2026 requires awareness of sequence-of-returns risk: poor returns early in retirement can devastate portfolio longevity even if long-term averages are good. A balanced portfolio (often 60% equities, 40% fixed income) helps mitigate this risk.
Inflation, averaging 2-3% annually, constantly erodes purchasing power. A fixed $30,000 withdrawal buys less each year. Retirees should consider increasing withdrawals annually to maintain lifestyle, and use the calculator to stress-test these scenarios against their portfolio's sustainability.
When Not to Use This Drawdown Calculator
This calculator assumes a fixed annual withdrawal and constant return rate. If your spending varies significantly (higher in early "go-go" years, lower later), a more dynamic planning tool may be appropriate.
It also does not account for additional income streams (pensions, part-time work, inheritances) or tax implications of withdrawals from different account types (Roth vs. Traditional IRA/401(k)). For complex scenarios, consult a financial advisor alongside this tool.
Frequently Asked Questions
What is a retirement drawdown calculator used for?
It projects how long your retirement savings will last based on your initial balance, annual withdrawals, and expected investment returns. It calculates your withdrawal rate, sustainable withdrawal amount, and provides a year-by-year breakdown of your portfolio's performance.
What is a safe withdrawal rate in retirement?
The '4% Rule' suggests withdrawing 4% of your initial portfolio annually (adjusted for inflation) for a high probability of lasting 30 years. With the default inputs ($500,000 savings, $30,000 withdrawal), the rate is 6% — above the guideline but sustainable over 20 years at 5% returns, ending with $334,670.
How does investment return impact portfolio longevity?
Higher returns let your remaining savings grow, offsetting withdrawals. With $500,000 and $30,000/year withdrawals over 20 years, a 5% return leaves $334,670 remaining, while a 3% return would leave significantly less. Even a 1-2% difference compounds dramatically over decades.
What happens if my retirement savings run out?
If savings are depleted, you rely on Social Security, pensions, or part-time work. The calculator shows the exact year depletion occurs and the insights panel flags when your withdrawal rate is unsustainable. The Sustainable Annual Withdrawal result card shows the maximum you can withdraw without running out.
What does the insights panel show?
The insights panel provides a 4% rule assessment (whether your withdrawal rate is sustainable), a sustainable withdrawal comparison (showing the maximum annual amount for your timeframe), and a growth vs. withdrawals analysis showing how much investment returns offset your spending. A breakdown bar visualizes total growth vs. total withdrawn.