Enter your current savings and expected annual retirement spending into the calculator to estimate how funded you are toward a rule-of-thumb retirement target (often 25× annual spending).

Retirement Funding Level Calculator

Estimate how funded your retirement is now, or project your funded ratio by retirement using savings, contributions, spending needs, guaranteed income, and your withdrawal rate.
Quick Funded Ratio
See how funded you are right now using your current savings.
Detailed Projection
Project retirement assets, funded ratio, and extra monthly savings needed.
Examples: Social Security, pension, annuity income.
A common starting assumption is 4%.
This calculator is a planning estimate. It does not model taxes, inflation changes in spending, market volatility, sequence of returns risk, or longevity uncertainty.

Related Calculators

Retirement Funding Level (Percent Funded) Formula

The following equations estimate how funded you are toward a retirement “target” using a simple rule of thumb (commonly 25× annual spending). This is not a true probability-of-success calculation (which typically requires Monte Carlo simulation or similar modeling).

\text{Percent Funded} = \left(\frac{S}{R}\right)\times 100
R = A \times 25
  • Where S is total savings ($)
  • A is annual retirement spending ($/year)
  • R is the rule-of-thumb required retirement funds (target nest egg) ($)

To estimate your percent funded, divide your total savings by your estimated required retirement funds, then multiply by 100. A common starting estimate for required funds is 25× annual spending (the “4% rule” guideline), though the right target can vary by risk tolerance, time horizon, taxes, and market conditions.

What is a Retirement “Probability of Success”?

Definition:

In retirement planning, “probability of success” usually means the estimated likelihood that a portfolio will last through retirement given assumptions about investment returns, inflation, withdrawals, taxes, and longevity—often estimated with Monte Carlo simulation. This page’s calculator instead provides a simple percent-funded estimate toward a rule-of-thumb target.

How to Calculate Percent Funded Toward a Retirement Target

Example Problem:

The following example outlines the steps and information needed to calculate a simple retirement funding percentage.

First, determine your total retirement savings. In this example, the savings are $500,000.

Next, determine the estimated required retirement funds (your target). Suppose your target is $1,000,000.

Finally, calculate your percent funded using the formula above:

Percent Funded = (S / R) × 100

Percent Funded = ($500,000 / $1,000,000) × 100

Percent Funded = 50%

FAQ

How accurate is this type of calculation?

This calculator provides a simple rule-of-thumb funding estimate (based on a target such as 25× annual spending). It does not model market variability, inflation, taxes, changing spending, or longevity. For a true “probability of success,” use a Monte Carlo-style retirement model.

What factors influence my retirement success?

Key factors include total savings, spending level, withdrawal rate, investment mix and performance, inflation, taxes, healthcare costs, lifestyle choices, and longevity. These are the inputs typically used in more advanced retirement probability models.

How can I improve my retirement outlook?

Strategies can include increasing savings, reducing expenses, adjusting your withdrawal rate, diversifying investments, building flexibility into spending, and delaying retirement. Regularly reviewing and updating your plan as circumstances change can also help.