Retirement Savings Gap Calculator
Retirement Savings Gap Calculator
The Retirement Savings Gap Calculator helps determine whether you are on track for a comfortable retirement by projecting your future savings and comparing them against the nest egg you need. The fundamental challenge is accumulating enough assets during your working years to support a retirement that could last 20 to 30 years.
The 4 Percent Rule provides a simple framework: if you withdraw 4 percent of your portfolio in the first year and adjust for inflation, your savings should last at least 30 years. Social Security replaces only about 40 percent of pre-retirement income, meaning personal savings must provide the rest. Financial advisors recommend saving 10 to 15 percent of income throughout your career.
Starting early is the most powerful factor due to compound interest. Saving $5,000 per year from age 25 at 8 percent grows to about $1.4 million by 65. Starting at 35 accumulates less than half that amount. This calculator makes these dynamics visible and helps you take action while there is still time to adjust.
Enter your current age, planned retirement age, current savings, annual contribution, expected return, target annual retirement income, and life expectancy. Press Calculate to see your projected savings, required nest egg using your withdrawal rate, and any savings gap.
For example, a 35-year-old with $50,000 saved, contributing $12,000 annually at 7 percent, targeting $50,000 income at 65 with a 4 percent withdrawal rate would need a $1.25 million nest egg and would be projected to have approximately $1.4 million, indicating they are on track.
Future value of savings with annual contributions:
Required nest egg using withdrawal rate:
Savings gap:
Required nest egg for different income targets and withdrawal rates:
| Target Income | 3% Withdrawal | 3.5% Withdrawal | 4% Withdrawal | 4.5% Withdrawal |
|---|---|---|---|---|
| $30,000 | $1,000,000 | $857,143 | $750,000 | $666,667 |
| $40,000 | $1,333,333 | $1,142,857 | $1,000,000 | $888,889 |
| $50,000 | $1,666,667 | $1,428,571 | $1,250,000 | $1,111,111 |
| $60,000 | $2,000,000 | $1,714,286 | $1,500,000 | $1,333,333 |
| $80,000 | $2,666,667 | $2,285,714 | $2,000,000 | $1,777,778 |
To close a savings gap, increase your savings rate, extend your working years, or reduce your target income. Take full advantage of employer matching contributions in your 401k plan. The employer match is essentially free money that boosts your savings rate immediately.
This calculator provides estimates based on fixed assumptions and does not model sequence-of-returns risk. It does not account for Social Security benefits, pension income, or part-time work in retirement. Users should consult a qualified financial advisor for personalized retirement planning.
- How is my retirement projection calculated?
- Using FV formula with current savings, monthly contributions, expected return rate, and years to retirement.
- What does it mean to be on track?
- Projected savings at retirement meet or exceed target (typically 25x desired annual income based on the 4% withdrawal rule).
- How does the 4% rule work?
- Withdraw 4% of savings in first retirement year, adjusting for inflation. Target = desired annual income x 25.
- Does the calculator account for inflation?
- Yes. Adjusts income target using default 2.5-3% inflation. Toggle between nominal and inflation-adjusted modes.
- How does delaying retirement affect results?
- Each added year adds contributions and investment growth. Retiring at 67 vs 62 can increase savings by 30-50%.
- Social Security Administration. "Retirement Benefits." ssa.gov.
- Bengen, W. "Determining Withdrawal Rates Using Historical Data." Journal of Financial Planning.
- Vanguard. "Retirement Savings Guidelines." vanguard.com.
- Fidelity. "How Much Do I Need to Retire?" fidelity.com.
- Bogleheads. "Retirement Planning Guide." bogleheads.org.
Last updated: May 12, 2026