Retirement Drawdown Calculator

Determine how long your retirement savings will last with this drawdown calculator. It projects your portfolio balance year by year, showing you at what age your money might run out based on your savings, withdrawal amount, investment returns, inflation, and other income sources like Social Security. Get a clear picture of your withdrawal strategy's sustainability and identify potential shortfalls before they happen.

This tool is for anyone in or nearing retirement who needs to understand the sustainability of their spending plan. It helps answer the critical question: "Will my money outlive me?" If you're still planning your savings goal, our general retirement calculator is a better starting point. To explore a common withdrawal rule, see the 4% rule retirement withdrawal calculator.

The results provide a Drawdown Health Score, the exact age your funds may be depleted, your effective withdrawal rate, and a detailed year-by-year breakdown. Interactive charts visualize your portfolio's decline over time, compare portfolio withdrawals against other income sources, and track key milestones as your balance decreases.

Begin by entering your portfolio details. Your Current Savings is the total amount you have invested for retirement. The Annual Return Rate is your expected average return on investments during retirement, while the Inflation Rate accounts for the rising cost of living. Finally, the Retirement Duration is the number of years you need your money to last.

Next, input your withdrawal and timeline information. The Monthly Withdrawal Amount is how much you plan to take from your portfolio each month for living expenses. This amount will automatically increase each year to keep pace with the inflation rate you entered. Your Current Age sets the starting point for the projection.

Then, add other guaranteed income sources that reduce the burden on your portfolio. Enter your estimated Social Security Monthly benefit and any Pension Monthly income you expect to receive. The calculator automatically factors these in, starting Social Security at age 67 per its default assumption. You can find your estimated benefit using our Social Security calculator.

For a more detailed projection, open the Advanced settings. Here you can enter an Effective Tax Rate to model the impact of taxes on your withdrawals, which is crucial if your savings are in pre-tax accounts like a 401(k) or Traditional IRA. You can also set aside an Emergency Fund Buffer, which is cash that will not be invested or included in the drawdown calculation, protecting it for unexpected expenses.

Current Savings

This is the starting balance of your investment portfolio at the beginning of retirement. Include all accounts you plan to draw from, such as your 401(k), 403(b), Traditional and Roth IRAs, and taxable brokerage accounts. A larger starting balance provides a bigger cushion and can support a higher withdrawal amount or last for a longer period. To see how long specific amounts last, read our guides on how long $500K will last in retirement or how long $1 million will last.

Annual Return Rate

This is the average annual growth you expect from your investments during retirement. This rate should be realistic and reflect your portfolio's asset allocation (mix of stocks, bonds, and cash). Retirees often adopt a more conservative allocation, which may lead to lower returns than during the accumulation phase. A common assumption for a balanced portfolio is between 5% and 7%, but this can vary widely.

Inflation Rate

Inflation erodes the purchasing power of your money over time. A $4,000 monthly withdrawal today will buy less in 10 or 20 years. This calculator increases your annual withdrawal amount by the inflation rate each year to maintain your standard of living. Using a realistic inflation rate (the historical average is around 2.5-3%) is critical for a long-term projection. Learn more about how inflation affects retirement savings.

Retirement Duration

This is the number of years you need your portfolio to support you. It is your life expectancy minus your current age. Since no one knows their exact lifespan, it is common to plan for a long retirement (30 years or more) to reduce the risk of outliving your assets. For example, a 65-year-old might plan to live to age 95, setting a duration of 30 years.

Monthly Withdrawal Amount

This is the amount of money you plan to spend from your portfolio each month in the first year of retirement. This figure should be based on a detailed retirement budget. The calculator assumes this amount needs to grow with inflation each year. A higher withdrawal amount will deplete your savings faster.

Current Age

Your current age serves as the starting point for the year-by-year projection. The calculator will show your portfolio balance and withdrawals for each subsequent age until the funds are depleted or the retirement duration is met.

Social Security & Pension Income

These are sources of guaranteed income that reduce the amount you need to withdraw from your portfolio. Enter the monthly amounts you expect to receive. The calculator assumes Social Security begins at age 67. The more income you have from these sources, the less stress is placed on your investment portfolio, making it last significantly longer. Use the Social Security break-even calculator to analyze your claiming options.

Effective Tax Rate

This advanced setting models the impact of taxes. Most withdrawals from traditional 401(k)s and IRAs are taxed as ordinary income. An effective tax rate of 15% means that to get $1,000 in spending money, you may need to withdraw approximately $1,176. This tax drag can significantly accelerate portfolio depletion. For more detail, read about how 401(k) withdrawals are taxed.

Emergency Fund Buffer

This is a cash reserve set aside for unexpected large expenses, such as medical bills or major home repairs. The calculator excludes this amount from your invested portfolio, so it does not generate investment returns but is also not subject to market risk. Having a buffer prevents you from having to sell investments at a bad time to cover an emergency.

This calculator runs a year-by-year simulation to project the longevity of your retirement savings.

First, it establishes your starting investable balance by subtracting the Emergency Fund Buffer from your Current Savings.

For each year of the simulation, it performs the following steps:

1. Calculate Annual Withdrawal: It determines the total annual spending needed, which is your initial Monthly Withdrawal Amount times 12, adjusted for cumulative inflation since the start of retirement.
2. Apply Taxes: It calculates the gross withdrawal required to net the target spending amount after accounting for your Effective Tax Rate.
3. Offset with Other Income: It subtracts any annual income from Social Security (if you are 67 or older) and your pension from the gross withdrawal amount. The remaining figure is the amount that must be taken from your portfolio.
4. Update Portfolio Balance: It deducts the required portfolio withdrawal from your current balance. The withdrawal is capped at the remaining balance, so it cannot go negative.
5. Calculate Investment Growth: It applies the Annual Return Rate to the remaining balance after the withdrawal to calculate investment gains for the year.
6. Determine End-of-Year Balance: It adds the investment growth to the post-withdrawal balance to find the new starting balance for the next year.

This process repeats for each year until the portfolio balance drops to zero or the specified Retirement Duration is reached. The Drawdown Health Score is then calculated based on how many years the money lasts compared to how many years you needed it to last.

The simulation uses a step-by-step annual calculation rather than a single formula. The core logic for each year is as follows:

Annual Withdrawal Calculation

Inflation_Adjusted_Monthly_Withdrawal = Initial_Monthly_Withdrawal * (1 + Inflation_Rate) ^ (Year_Number - 1)

Annual_Spending_Need = Inflation_Adjusted_Monthly_Withdrawal * 12

Gross_Withdrawal_Needed_For_Spending = Annual_Spending_Need / (1 - Tax_Rate)

Net Portfolio Withdrawal

Annual_Social_Security = Monthly_Social_Security * 12  (if Age >= 67)

Annual_Pension = Monthly_Pension * 12

Net_Portfolio_Withdrawal = max(0, Gross_Withdrawal_Needed_For_Spending - Annual_Social_Security - Annual_Pension)

Actual_Withdrawal = min(Net_Portfolio_Withdrawal, Current_Balance)

Year-End Balance Calculation

Balance_After_Withdrawal = Current_Balance - Actual_Withdrawal

Investment_Growth = Balance_After_Withdrawal * Annual_Return_Rate

End_of_Year_Balance = Balance_After_Withdrawal + Investment_Growth

Key Result Metrics

Effective_Withdrawal_Rate = (Initial_Monthly_Withdrawal * 12) / Current_Savings

Years_Money_Lasts = The year number when End_of_Year_Balance first hits zero.

Depletion_Age = Current_Age + Years_Money_Lasts

A sustainable withdrawal rate is the percentage of your portfolio you can withdraw each year without a high risk of running out of money over your lifetime. For decades, the most common guideline has been the 4% rule.

The 4% rule suggests withdrawing 4% of your initial portfolio value in your first year of retirement, and then adjusting that dollar amount for inflation each subsequent year. For example, on a $1 million portfolio, the first-year withdrawal would be $40,000. If inflation is 3%, the second-year withdrawal would be $41,200. This rule was based on historical data and designed to make a portfolio last for 30 years. You can model it with our 4% rule withdrawal calculator.

However, the 4% rule is not foolproof. Its safety depends on several factors:

• Retirement Duration: The rule was designed for a 30-year retirement. For a longer retirement, a lower rate (e.g., 3.0% - 3.5%) may be safer.
• Investment Allocation: The rule assumes a balanced portfolio, typically 60% stocks and 40% bonds. A very conservative or very aggressive portfolio could lead to different outcomes.
• Market Conditions: Future returns may not match historical averages. Low expected returns or high inflation could challenge the 4% rule's sustainability.

Many financial planners now advocate for more dynamic approaches, such as using "guardrails" where you adjust withdrawal percentages based on market performance. This calculator helps you test your specific initial withdrawal rate against your own assumptions for returns and duration.

One of the biggest risks in retirement is the "sequence of returns risk." This is the danger that poor investment returns early in retirement can permanently damage the longevity of your portfolio.

Imagine two retirees, both with $1 million, withdrawing $40,000 per year and earning an average of 7% annually over 30 years.

• Retiree A experiences strong market gains in their first few years. Their portfolio grows substantially, creating a large cushion that can withstand later downturns.
• Retiree B experiences a major market crash in their first few years. They are forced to sell assets at low prices to fund their withdrawals, which severely depletes their principal. Even when the market recovers, their smaller portfolio balance cannot generate enough growth to catch up.

Retiree B is much more likely to run out of money, even with the same average return as Retiree A. This calculator uses a steady average return and does not model this sequence risk. To understand how your plan might hold up against variable market conditions, a Monte Carlo retirement calculator can be a valuable next step, as it runs thousands of simulations with random market returns.

The calculator provides several key outputs to help you assess your drawdown plan.

• Drawdown Health Score: This gives you an at-a-glance summary. A high score indicates your plan is sustainable for your desired retirement duration. A lower score signals a potential shortfall, meaning your money may run out too soon.
• Years Money Lasts & Depletion Age: These are the most direct results. They tell you exactly how long your savings are projected to last and at what age you would run out of funds. If the result is "N/A" or shows a large remaining balance, your plan is sustainable under the given assumptions.
• Total Withdrawn: This shows the cumulative amount of money you will have taken from your portfolio over its lifetime.
• Effective Withdrawal Rate: This is your first year's total withdrawal as a percentage of your starting savings. Rates above 5% are often considered aggressive and carry a higher risk of depletion.
• Portfolio Drawdown Chart: This visualizes the decline of your savings over time. A gradual, smooth slope is ideal. A steep, rapid decline, especially in the early years, is a major red flag.
• Withdrawals vs. Income Chart: This stacked area chart shows how much of your annual spending is covered by your portfolio versus other income like Social Security and pensions. It highlights how critical these income sources are in preserving your capital.

If the calculator shows your money running out too early, you have several levers to pull.

1. Reduce Withdrawals: This is the most powerful factor. Even a small reduction in your monthly spending can add years to your portfolio's life. Revisit your retirement budget to find areas to trim.
2. Increase Other Income: Can you delay Social Security to get a larger benefit? Do you have opportunities for part-time work, especially in the early years of retirement? Any income that isn't from your portfolio helps. Explore options with the retirement income calculator.
3. Adjust Your Investment Strategy: A portfolio that is too conservative may not generate enough growth to keep up with withdrawals and inflation. Conversely, one that is too aggressive may be exposed to severe losses. Re-evaluating your risk tolerance and asset allocation may be necessary.
4. Manage Taxes: A high tax rate on withdrawals acts as a drag on your portfolio. Strategies like Roth conversions or carefully sequencing withdrawals from different account types can lower your lifetime tax bill. Learn more about tax-efficient withdrawal strategies.

1. Ignoring Inflation: Assuming your expenses will stay flat for 30 years is a critical error. The calculator's inflation adjustment is essential for a realistic projection.
2. Forgetting About Taxes: If your savings are primarily in a 401(k) or Traditional IRA, you must account for the taxes you'll owe on every dollar you withdraw.
3. Underestimating Longevity: Planning for a retirement of only 15-20 years can be risky. It's often safer to plan to live to age 95 or even 100.
4. Being Overly Optimistic on Returns: Using a 10% or 12% average return assumption based on historical stock market performance may be unrealistic for a more balanced retirement portfolio.
5. Failing to Plan for Shocks: A simple projection doesn't account for market crashes or unexpected expenses like long-term care. Building in a buffer, like an emergency fund, is crucial.