# Retirement Savings Calculator

Calculate how much you need to save for retirement. See projected savings, investment growth, and whether you are on track with the 4% rule.

## What this calculates

Plan your retirement with confidence. Enter your age, savings, monthly contributions, and expected return to see your projected nest egg and whether it meets your income goals using the 4% withdrawal rule.

## Inputs

- **Current Age** — min 18, max 80 — Your current age.
- **Retirement Age** — min 30, max 85 — The age you plan to retire.
- **Current Retirement Savings** ($) — min 0 — Total saved in all retirement accounts so far.
- **Monthly Contribution** ($) — min 0 — How much you contribute monthly (including employer match).
- **Expected Annual Return** (%) — min 0, max 20 — Average annual investment return (7% is a common stock market average).
- **Desired Annual Retirement Income** ($) — min 0 — How much annual income you want in retirement.

## Outputs

- **Projected Savings at Retirement** — formatted as currency — Estimated total retirement savings when you retire.
- **Total Contributions** — formatted as currency — Total amount you will have contributed.
- **Investment Growth** — formatted as currency — Total earnings from investment returns.
- **Estimated Retirement Need (25x Rule)** — formatted as currency — Amount needed based on the 4% withdrawal rule.
- **Surplus / Deficit** — formatted as currency — Whether you are above or below your retirement target.

## Details

Planning for retirement is one of the most important financial decisions you will make. The earlier you start saving, the more time compound interest has to grow your money. This calculator projects your total retirement savings using the future value of your current savings plus the future value of your ongoing monthly contributions.

The 4% rule (or 25x rule) is a widely used guideline suggesting that you can safely withdraw 4% of your retirement portfolio each year without running out of money over a 30-year retirement. To find your target, multiply your desired annual retirement income by 25. For example, if you want $60,000 per year in retirement, you need approximately $1,500,000 saved.

The assumed rate of return significantly impacts projections. Historically, a diversified stock portfolio has returned about 7% annually after inflation. More conservative estimates use 5-6%, while aggressive assumptions might use 8-10%. Remember that actual returns will vary year to year; these projections show the average outcome, not guaranteed results.

## Frequently Asked Questions

**Q: How much do I need to save for retirement?**

A: A common guideline is to save 25 times your desired annual retirement income (the 4% rule). If you want $60,000 per year in retirement, aim for $1,500,000. However, this depends on factors like Social Security benefits, pension income, healthcare costs, and your planned retirement lifestyle. Many financial advisors recommend aiming for 70-80% of your pre-retirement income to maintain your standard of living.

**Q: What rate of return should I assume?**

A: A commonly used assumption is 7% annually, which reflects the historical average return of the S&P 500 after inflation. If you have a conservative portfolio with more bonds, 4-5% may be more appropriate. Aggressive stock-heavy portfolios might assume 8-10%. Remember to account for inflation: a 10% nominal return with 3% inflation is effectively a 7% real return. Being conservative with your assumptions provides a margin of safety.

**Q: What is the 4% rule?**

A: The 4% rule states that you can withdraw 4% of your retirement portfolio in the first year and adjust for inflation each subsequent year, with a very low risk of running out of money over 30 years. It was derived from the Trinity Study, which analyzed historical market data. While not a guarantee, it provides a useful planning target. Some modern financial planners suggest a more conservative 3-3.5% withdrawal rate given current market conditions.

**Q: How does compound interest affect retirement savings?**

A: Compound interest is the single most powerful factor in retirement savings growth. Your money earns returns not just on your contributions but on all previously accumulated returns. For example, $500/month invested at 7% for 35 years grows to about $860,000, even though you only contributed $210,000. The remaining $650,000 is investment growth. Starting just 10 years earlier can more than double your final balance.

**Q: Should I include Social Security in my retirement plan?**

A: Social Security provides a foundation of retirement income for most Americans. The average benefit is about $1,800/month, though your actual benefit depends on your earnings history. You can check your projected benefits at ssa.gov. While it is wise to include Social Security in your planning, do not rely on it as your sole source of retirement income. Consider it a supplement and plan your personal savings to cover the majority of your needs.

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Source: https://vastcalc.com/calculators/finance/retirement
Category: Finance
Last updated: 2026-04-21