Retirement Withdrawal Calculator - Savings Runway Plan

The retirement withdrawal calculator estimates how long a pool of savings may support a planned first-year withdrawal after return, inflation, and timing assumptions are applied. The page is built for drawdown planning rather than accumulation planning. It starts with a current balance, subtracts withdrawals, applies annual growth, raises future withdrawals by the entered inflation rate, and reports whether the plan lasts through the selected horizon.

The calculator also solves a separate sustainable-withdrawal estimate. That figure answers a different question: what first-year withdrawal would approximately exhaust the starting balance over the chosen number of years if the return and inflation assumptions were met. The result can be compared with the entered withdrawal, but it is not a guarantee. It is a scenario output from a time-value formula.

The optional RMD estimate is included because retirement withdrawals often involve traditional IRAs, SEP IRAs, SIMPLE IRAs, and employer retirement plans. When an age of 73 or older and a tax-deferred balance are entered, the calculator divides that balance by the IRS Uniform Lifetime Table denominator for the age. A zero tax-deferred balance leaves the RMD output at zero.

The model intentionally excludes taxes, fees, sequence-of-return risk, one-time spending shocks, Social Security claiming decisions, pension income, Roth ordering rules, and account-specific withdrawal restrictions. Those limits keep the math transparent. The output is best read as a structured worksheet for comparing assumptions, not as a personalized retirement recommendation.

For accumulation before the withdrawal phase, the Retirement Savings Calculator provides a related view of contributions, return assumptions, and long-term balance growth.

The withdrawal schedule uses an annual loop. If beginning-of-year timing is selected, the year’s withdrawal is subtracted before growth is applied. If end-of-year timing is selected, the balance grows first and the withdrawal is subtracted after growth. After each fully funded year, the next withdrawal is increased by the inflation assumption.

The sustainable withdrawal estimate uses a real-return annuity formula. The real return is calculated as (1 + nominal return) ÷ (1 + inflation) - 1. A first-year withdrawal is then solved over the selected projection years. Beginning-of-year timing lowers the estimate because money leaves the portfolio sooner.

The compounding side of the calculation follows the same growth principle illustrated by Investor.gov's compound interest calculator, where balances change over time based on principal, rate, and period assumptions. This page applies that compounding after withdrawals rather than during pure saving.

For a cleaner look at present value, future value, rate, and time without retirement labels, the Time Value Of Money Calculator isolates the same financial math.

A withdrawal projection depends on a few related concepts. The starting balance is the amount exposed to the model. The first-year withdrawal is the initial gross draw. The return assumption describes portfolio growth, while the inflation assumption increases future withdrawals. The projection years define how long the plan is tested.

The sustainable withdrawal output should be read beside, not instead of, the entered withdrawal. If the entered withdrawal is much higher than the sustainable estimate, the scenario depends on better returns, lower inflation, a shorter horizon, other income, lower spending, or a willingness to reduce later withdrawals.

When IRA contribution history and Roth eligibility are part of the review, the IRA Calculator can provide account-specific context before withdrawals begin.

The RMD portion follows current IRS retirement distribution guidance reviewed on May 23, 2026. The IRS Publication 590-B explains that an owner generally figures a required minimum distribution by dividing the prior December 31 account balance by the applicable life-expectancy denominator.

The denominator used by this page comes from the IRS Uniform Lifetime Table in that publication. For example, the table denominator for age 75 is 24.6, so a 100,000 dollar tax-deferred balance produces an estimated 4,065.04 dollar required minimum distribution before any custodian-specific or plan-specific adjustments.

The withdrawal-schedule portion does not rely on a statutory rate. Return, inflation, and timing assumptions are scenario inputs. A saved result should preserve the assumptions beside the output because a small difference in real return can change a long projection materially.

The page does not determine whether a distribution is taxable, qualified, early, or allowed without penalty. It also does not decide whether a retirement account has separate beneficiary, inherited-account, plan-administrator, or Roth treatment. Those topics require account records and current tax guidance.

1. 1The starting savings balance should match the accounts assigned to the projection, not every household asset.
2. 2The planned first-year gross withdrawal becomes the first annual draw before future inflation increases.
3. 3Annual return and inflation assumptions drive sensitivity. Conservative, base, and stronger-return cases can show how exposed the plan is to market assumptions.
4. 4Projection years and withdrawal timing define the schedule. Beginning timing is more conservative because cash leaves before the year’s growth is applied.
5. 5Age and tax-deferred balance activate the optional RMD estimate. A zero balance keeps this output inactive.
6. 6Years fully funded, ending balance, total withdrawals, and sustainable first-year withdrawal show whether the scenario needs further review.

A practical review usually runs more than one scenario. A low-return case can show stress, while a moderate case can show the plan under expected assumptions. The exact inputs matter more than a single headline number.

For workplace-plan context before distributions begin, the 401K Calculator can compare contributions, matching assumptions, and retirement account growth.

The main benefit is comparison. A household can test whether a planned withdrawal is close to the modeled sustainable withdrawal, whether the selected horizon is too long for the balance, or whether inflation is the pressure point. The results make the tradeoffs visible without pretending that a single percentage is always safe.

• •Retirement date screening: A later retirement date may shorten the projection period or increase starting savings, both of which can improve runway.
• •Spending review: Lowering the first-year withdrawal usually has an outsized effect because every future inflated withdrawal starts from that base.
• •Inflation review: Higher inflation increases every later withdrawal and can expose a fragile spending plan.
• •RMD awareness: The optional output shows when tax-deferred minimum distributions may exceed the planned draw.
• •Advisor preparation: The worksheet can summarize assumptions before portfolio allocation, tax, and account-ordering questions are reviewed.

The Consumer Financial Protection Bureau's retirement planning resources emphasize planning around income, expenses, and timing choices. This calculator supports that same planning conversation by turning those assumptions into a traceable projection.

For earlier stop-work scenarios, the Early Retirement Calculator can test the savings target and bridge years before standard retirement ages.

Several inputs can shift the answer sharply. None should be treated as fixed truth unless it comes from an actual account record, spending plan, or policy document. The most useful review changes one factor at a time and records how the years-funded output moves.

Market sequence risk is not modeled. Two portfolios can have the same long-run average return but very different retirement outcomes if weak returns occur early in the withdrawal period. This limitation is one reason conservative scenarios matter.

Cash reserves and spending flexibility also change interpretation. A household with a separate emergency fund may leave the modeled portfolio untouched during a short market decline. A household willing to pause inflation increases, delay major purchases, or reduce discretionary spending may have more flexibility than a fixed-withdrawal schedule shows. The calculator keeps the schedule fixed so the baseline remains easy to audit.

For rate sensitivity outside a withdrawal schedule, the Savings Interest Rate Calculator can show the return needed to reach a target balance.

Consider a 500,000 dollar portfolio with a 24,000 dollar first-year withdrawal, a 5 percent annual return, 2.5 percent inflation, end-of-year timing, and a 30-year projection. The model funds all 30 years, withdraws a little over 1.05 million dollars over the period, and ends with a small remaining balance. The sustainable first-year withdrawal is close to the entered withdrawal, so the scenario is internally consistent under those assumptions.

Now consider the same balance with a materially higher first-year withdrawal. If the draw rises faster than return can support, the years-funded output falls before the projection horizon ends. That result does not prove retirement is impossible. It identifies a mismatch between the spending level, the portfolio balance, the return assumption, inflation, and the desired horizon.

A separate RMD example shows why tax-deferred context matters. At age 75, a 100,000 dollar tax-deferred balance divided by the IRS Uniform Lifetime denominator of 24.6 produces an estimated RMD of 4,065.04 dollars. That required distribution may be lower or higher than planned spending from the same account.

Another example involves a retiree with several account types. Taxable savings might fund early years, Roth assets might be preserved for later flexibility, and tax-deferred accounts might eventually create RMDs. This calculator does not choose that order. It gives one clean projection that can be compared with account-ordering, tax, and estate-planning decisions outside the model.

For valuing a known stream of future withdrawals, the Annuity Present Value Calculator can translate scheduled payments back into a present-value estimate.