New Retirement Longevity Calculator

Calculator Inputs

Example Data Table

Formula Used

Pre-retirement balance:

Balance = Previous Balance × (1 + Pre-Retirement Return) + Annual Contributions + Employer Match

Inflated retirement spending:

Future Spending = Current Spending × (1 + Inflation Rate)^Years

Healthcare estimate:

Future Healthcare = Current Healthcare × (1 + Healthcare Inflation)^Years

Need-based gross withdrawal:

Withdrawal = [Total Need − Outside Income × (1 − Tax Rate)] ÷ (1 − Tax Rate)

Retirement balance:

Ending Balance = Starting Balance × (1 + Retirement Return) − Actual Withdrawal

The calculator uses simplified tax logic. It assumes outside income and withdrawals are taxable. Real results may vary by account type, location, and tax rule.

How to Use This Calculator

1. Enter your current age, planned retirement age, and planning age.
2. Add your current savings, annual contributions, and employer match.
3. Enter return assumptions before and after retirement.
4. Add inflation, healthcare inflation, income sources, and taxes.
5. Select a withdrawal strategy that matches your planning style.
6. Click the calculate button.
7. Review the result above the form.
8. Download the yearly projection as a CSV or PDF file.

Retirement Longevity Planning Guide

What Retirement Longevity Means

Retirement longevity measures how long your money can support your life after work ends. A good estimate compares savings, income, spending, taxes, growth, and inflation. The result is not a promise. It is a planning signal. It shows when your portfolio may remain strong, when it may weaken, and where changes can improve safety.

Why Yearly Cash Flow Matters

This calculator focuses on yearly cash flow. It first grows your savings until retirement. It adds contributions and employer match. Then it models each retirement year. It estimates living costs, medical costs, one time spending, outside income, taxes, withdrawals, investment growth, and ending balance. The table helps you see the pressure points. A year with high inflation, lower returns, or large expenses can change the result quickly.

Testing Different Retirement Cases

Strong planning uses more than one case. Run a base case with normal returns. Then test a conservative case with lower returns and higher inflation. Try a later retirement age, smaller spending target, or larger contribution. Compare how each change affects the depletion age and final balance. This process can reveal which choice matters most.

Taxes and Income Effects

Taxes also matter. A withdrawal that looks affordable before tax may feel smaller after tax. Pension income, social income, and portfolio withdrawals can all affect the taxable amount. The tax estimate here is simplified, but it keeps the analysis realistic. For complex accounts, use this as a first estimate before professional advice.

Using the Result

Use the result to guide decisions. If money lasts beyond the planning age, review the final balance and legacy goal. If it runs out early, adjust spending, work years, income, or risk. The goal is not only survival. It is flexible retirement comfort.

Reviewing the Plan

A longevity review should be repeated often. Update balances, income dates, return assumptions, and expenses each year. Include planned home repairs, insurance changes, travel goals, family support, and health costs. Small errors can compound over decades. Clear assumptions make the projection easier to improve. They also make tradeoffs easier to discuss with a spouse, adviser, or family member. Treat the output as a map. Better inputs create a better route. Revisit the plan after market declines or major life events. Early action gives your savings more time to recover and adapt. It supports steadier choices before problems grow larger.

FAQs