Evidence-first money workflow · Finance & Business
Retirement Income Drawdown Planner
Build an inflation-linked retirement withdrawal schedule with annual growth, paid income, ending balances, and a visible depletion year.
- 1Prepare
- 2Analyze
- 3Review and export
Prepare the evidence
Paste the documented CSV schema or choose a local CSV file. Nothing is sent to Nirmion.
Review the analysis
Summary metrics lead back to the rows that support them.
Method and interpretation
How to use Retirement Income Drawdown Planner
Use this retirement income drawdown calculator to create an explainable baseline before adding uncertain returns, taxes, pensions, or multiple account types. It answers how a starting portfolio changes when one annual return is applied and spending rises with inflation. The schedule helps identify the first year in which the requested income cannot be fully paid and provides a simple comparison case for a Monte Carlo retirement simulation.
Prepare the input
Enter a positive starting portfolio, the desired first-year annual withdrawal, the number of years, a fixed nominal annual return, and an inflation assumption. The withdrawal occurs after annual growth and increases at the end of every modeled year. Use a single currency. If income begins partway through a year or comes from several sources, convert the scenario into a consistent annual basis first.
Check the worked example
The example begins with USD 750,000 and requests USD 36,000 in year one, a 4.8% initial withdrawal. It applies 5% annual growth and increases spending by 2.5% for 30 years. The table exposes every opening balance, growth amount, requested income, paid income, and closing balance rather than showing only one retirement number.
Read the evidence
The first-year withdrawal rate gives context but is not a rule or recommendation. Review the paid column because it can fall below the requested withdrawal when the portfolio reaches zero. A low ending balance several years before the horizon indicates limited room inside this fixed-return scenario. Compare this schedule with the range simulator to see why an identical average return can still produce different real outcomes.
Calculation method
Annual growth = opening balance × nominal return. Requested withdrawal in year n = first-year withdrawal × (1 + inflation)^(n − 1). Paid withdrawal is capped at opening balance plus growth. Ending balance = max(0, opening balance + growth − paid withdrawal). The next year begins with that ending balance.
See ProjectionLab’s retirement planning and withdrawal-strategy feature overview
Questions this workflow helps answer
Use these questions to confirm that this tool matches the task you need to complete.
- How long can a retirement portfolio support inflation-adjusted withdrawals?
- What is the annual balance schedule for a fixed retirement income plan?
- In which year does an entered retirement drawdown run out of money?
Limits and decision boundary
A constant annual return removes sequence risk and creates a smoother path than a real portfolio. The model excludes taxes, fees, Social Security or pensions, required distributions, cash reserves, rebalancing, spending changes, and account order. It is a transparent baseline rather than a full retirement plan or investment recommendation.
Common mistake
Do not compare the nominal ending balance with today’s purchasing power without adjusting for inflation. Also avoid entering a real return while separately inflating withdrawals, because that mixes real and nominal assumptions.
Your pasted values and selected CSV files are processed in this browser tab. This workflow does not connect to a bank, save a budget, or provide financial, tax, legal, or investment advice.
Questions about this workflow
Does the tool calculate a safe withdrawal rate?
No. It shows one fixed-return schedule. Safety requires uncertainty analysis, personal constraints, taxes, fees, and contingency planning.
When is the withdrawal applied?
After the entered annual growth. Changing cash-flow timing can change results, especially when balances are low.
Why can paid income be lower than requested income?
Once growth plus the remaining balance is smaller than the requested withdrawal, the model pays only what remains and records depletion.