Free Retirement Calculator

This retirement calculator helps you determine whether your current savings rate will provide the retirement income you need. It projects your savings growth through the accumulation phase (your working years) and then simulates withdrawals through the distribution phase (your retirement years) to show if your money will last. Here is how to get the most accurate results.

1. Enter your ages. Your current age, the age you plan to retire, and your life expectancy. Life expectancy is important because it determines how many years your savings need to last. If you are unsure, age 90 is a reasonable planning assumption. For more conservative planning, use 95.
2. Enter your current retirement savings. This includes all retirement accounts such as your 401(k), IRA, Roth IRA, and any other investments earmarked for retirement. Do not include equity in your home unless you plan to sell it and live off the proceeds.
3. Set your monthly contribution. Enter the total amount you save for retirement each month, including your personal contributions and any employer match. If you increase your contributions annually, use the average expected contribution over the next several years.
4. Choose your expected rate of return. For a diversified stock portfolio, 7% (after inflation) or 10% (before inflation) is a common long-term benchmark. For a balanced portfolio with bonds, 5-6% is more conservative. The calculator also accounts for inflation separately.
5. Set your retirement goals. Enter your desired monthly income in today's dollars, your expected Social Security benefit, and the expected inflation rate. The calculator will adjust your withdrawal needs for inflation throughout retirement.
6. Review your results. The dashboard shows whether you are on track, what your projected monthly income will be, and any income gap. The chart visualizes your balance over your entire lifetime, and the projection table shows detailed year-by-year numbers.

Determining how much money you need to retire comfortably is one of the most important financial questions you will ever answer. While the exact number varies significantly based on your lifestyle, location, and goals, there are several well-established frameworks that can give you a reliable target.

The 4% Rule (Safe Withdrawal Rate)

The 4% rule is the most widely cited retirement planning guideline. Developed by financial planner William Bengen in 1994, it states that if you withdraw 4% of your portfolio in the first year of retirement, then adjust that amount for inflation each year, your portfolio has a high probability of lasting at least 30 years. This was validated across every 30-year period in U.S. market history going back to 1926, including periods that began right before the Great Depression, the 1970s stagflation, and the dot-com crash.

In practical terms, the 4% rule means you need 25 times your annual retirement spending. If you want $60,000 per year from your portfolio (after Social Security), you need $1.5 million. If you want $80,000 per year, you need $2 million. This is sometimes called the "25x rule" because it is simply the inverse of 4%.

Limitations of the 4% Rule

While the 4% rule is a useful starting point, it has important limitations. It assumes a 30-year retirement, so if you retire at 55 and live to 95, you may need a lower withdrawal rate like 3.5%. It was developed using U.S. market data during a period when American markets performed exceptionally well globally. It assumes a relatively fixed spending pattern, but real retirees often spend more in the early active years of retirement and less in later years. And it does not account for the sequence-of-returns risk in detail: if the stock market crashes in your first few years of retirement, a 4% withdrawal rate can deplete your portfolio much faster than the historical averages suggest.

Income Replacement Approach

Another approach is to target replacing 70-80% of your pre-retirement income. If you earn $100,000 per year before retirement, you would aim for $70,000-$80,000 per year in retirement. The reasoning is that in retirement you no longer need to save for retirement (15-20% of income), you do not pay payroll taxes (7.65%), and work-related expenses like commuting and professional clothing go away. However, healthcare costs often increase significantly, and some retirees actually spend more in early retirement on travel and hobbies. Use this as a cross-check alongside the 4% rule to triangulate your target.

Time is the most powerful variable in retirement planning, far more important than investment selection or even how much you save. The difference between starting at 25 versus 35 is enormous because of compound growth. Here are real examples to illustrate.

Starting at 25 vs. 35 vs. 45

Assume all three investors contribute $500 per month with a 7% annual return and retire at 65. The investor who starts at 25 has 40 years of growth. Their total contributions are $240,000 ($500 x 12 x 40), but their portfolio grows to approximately $1,197,811. More than $957,000 of their final balance is pure investment growth.

The investor who starts at 35 has 30 years. Their total contributions are $180,000, and their portfolio grows to approximately $566,765. They contributed only $60,000 less, but ended up with $631,000 less than the early starter. The investor who starts at 45 has just 20 years. Their total contributions are $120,000, and their portfolio reaches approximately $246,913. Despite contributing half what the 25-year-old did, they end up with less than a quarter of the final balance.

This is why financial advisors emphasize that the best time to start saving was yesterday, and the second best time is today. Even small contributions in your 20s have decades to compound, and those early dollars do more heavy lifting than any amount of catch-up contributions later.

The Cost of Waiting One Year

Every year you delay retirement savings costs you more than just that year's contributions. If you save $500 per month at a 7% return starting at age 25, you will have $1,197,811 at 65. If you delay just one year to age 26, you will have $1,113,297 at 65 — a difference of $84,514. That single year of delay cost you more than 14 years of contributions ($84,514 versus $6,000 in annual contributions). This is because the first year's contributions had 39 years to compound, and that compound growth cascades through every subsequent year.

A secure retirement typically relies on multiple income sources rather than a single one. Understanding each source helps you create a comprehensive retirement plan.

Social Security

Social Security provides a foundation of guaranteed, inflation-adjusted lifetime income. The average retired worker receives approximately $1,900 per month in 2024, though benefits can range from about $900 to over $4,500 depending on your earnings history and when you claim. Social Security replaces roughly 40% of pre-retirement income for average earners and less for high earners. While Social Security alone is not enough for most retirees, it provides an important baseline of guaranteed income that cannot be outlived or lost in a market crash. You can check your estimated benefit at ssa.gov/myaccount.

401(k), IRA, and Other Retirement Accounts

Employer-sponsored plans like 401(k)s and individual retirement accounts like Traditional and Roth IRAs are the primary savings vehicles for most workers. These accounts grow tax-advantaged, either deferring taxes until withdrawal (Traditional) or growing tax-free (Roth). The key advantage is decades of compound growth without annual tax drag. Most retirees draw down these accounts systematically using a withdrawal strategy like the 4% rule, converting the lump sum into a stream of monthly income.

Pensions

While traditional defined-benefit pensions have become less common in the private sector, many government employees and some long-tenured corporate employees still have them. A pension provides a guaranteed monthly payment for life, typically based on your years of service and final average salary. If you have a pension, it significantly reduces the amount you need to save independently. Even a modest pension of $1,500 per month is equivalent to having $450,000 in retirement savings (using the 4% rule in reverse).

Passive Income and Other Sources

Additional retirement income can come from rental properties, dividend-paying stocks, annuities, part-time work, or business income. Rental properties can provide inflation-adjusted monthly income, though they require management. Dividend portfolios can generate 2-4% annual income with potential for growth. Annuities can convert a lump sum into guaranteed lifetime income, though they come with higher fees and less flexibility. Part-time work in early retirement (sometimes called semi-retirement) can bridge the gap between your savings and your needs while keeping you active and engaged.

Maximize Your Employer Match

If your employer offers a 401(k) match, contribute at least enough to capture the full match. This is an immediate 50-100% return on your money. An employer that matches 50% of contributions up to 6% of your salary on a $75,000 salary adds $2,250 per year in free money. Over a 35-year career at 7% growth, that match alone could grow to over $350,000.

Automate Your Contributions

Set up automatic contributions to your retirement accounts so saving happens before you can spend the money. Many 401(k) plans offer automatic escalation features that increase your contribution rate by 1% per year. This gradually builds your savings rate without requiring willpower or dramatic lifestyle changes.

Diversify Your Tax Treatment

Having money in both Traditional (pre-tax) and Roth (after-tax) accounts gives you tax flexibility in retirement. You can withdraw from Traditional accounts in low-income years and Roth accounts in high-income years, effectively managing your tax bracket. This strategy can save tens of thousands of dollars in taxes over a long retirement.

Plan for Healthcare Costs

Healthcare is one of the largest expenses in retirement. Fidelity estimates that a 65-year-old couple retiring in 2024 will need approximately $315,000 for healthcare expenses in retirement, not including long-term care. Medicare covers many costs starting at age 65, but it does not cover dental, vision, hearing aids, or long-term care. If you plan to retire before 65, you will need to bridge the gap with private insurance, which can cost $500 to $1,500 per month per person.

Review and Adjust Annually

Your retirement plan is not a set-it-and-forget-it exercise. Review your plan at least once a year and after major life changes such as marriage, job changes, or having children. As you approach retirement, gradually shift your portfolio toward more conservative investments to protect your nest egg from a market downturn right before you need to start withdrawing.