Data Notice: This calculator provides estimates based on the inputs you provide and assumes a constant rate of return. Actual investment returns vary year to year and are not guaranteed. Contribution limits reflect 2026 IRS rules and are subject to annual adjustment. This is not financial advice. Consult a qualified financial adviser for personalized retirement planning. [retirement-calculator-2026]

Retirement Savings Calculator 2026

This calculator provides general financial education and is not a substitute for professional financial advice. Projected figures assume a constant annual return and do not account for inflation, taxes on withdrawals, or market volatility. Work with a licensed financial adviser for decisions affecting your specific retirement plan.

Use the calculator below to project your retirement savings based on your current age, target retirement age, existing savings, monthly contributions, and expected rate of return. The tool calculates compound growth, estimates your monthly retirement income under the 4% rule, and shows whether you are on track for a $1 million nest egg.

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How Compound Interest Builds Retirement Wealth

Compound interest is the engine behind long-term retirement savings. Unlike simple interest, which earns returns only on your original investment, compound interest earns returns on your returns. Each month, your gains from prior months begin generating their own gains, creating exponential growth over time.

The formula this calculator uses is the future value of a lump sum plus an annuity:

FV = P(1 + r/n)^(nt) + PMT x [((1 + r/n)^(nt) - 1) / (r/n)]

Where P is your current savings, r is the annual return rate, n is the compounding frequency (12 for monthly), t is years until retirement, and PMT is your monthly contribution.

The critical insight is that time matters more than contribution size. Starting at age 25 with $300/month at 7% yields more at age 65 than starting at 35 with $600/month. The extra decade of compounding on early contributions creates a gap that is nearly impossible to close with larger late-start contributions.

For a full breakdown of how compound growth works across different investment vehicles, see our Investment Basics: Stocks, Bonds, and ETFs Guide.

2026 Retirement Account Contribution Limits

The IRS sets annual limits on how much you can contribute to tax-advantaged retirement accounts. Knowing these limits helps you maximize the tax benefits and compound growth available to you.

401(k) / 403(b) Plans

• Employee contribution limit (2026): $23,500
• Catch-up contribution (age 50+): additional $7,500, for a total of $31,000
• Super catch-up (ages 60-63, new for 2025+): additional $11,250, for a total of $34,750
• Employer + employee combined limit: $70,000

If your employer offers a match (e.g., 50% of contributions up to 6% of salary), this is effectively free money. Always contribute at least enough to capture the full match before directing funds elsewhere.

IRA (Traditional and Roth)

• Contribution limit (2026): $7,000
• Catch-up contribution (age 50+): additional $1,000, for a total of $8,000
• Roth IRA income phase-out: begins at $150,000 (single) / $236,000 (MFJ)

Roth IRA contributions are made with after-tax dollars, but qualified withdrawals in retirement are completely tax-free. If you expect to be in a higher bracket in retirement, Roth contributions may be more beneficial.

For the latest on retirement account changes, including the new SECURE 2.0 Act provisions, see 401(k) Changes for 2026.

The 4% Rule Explained

The 4% rule is a widely cited retirement withdrawal guideline. It states that you can withdraw 4% of your portfolio in the first year of retirement, then adjust for inflation each subsequent year, with a high probability that your savings will last at least 30 years.

The rule originates from the 1994 “Trinity Study” by three finance professors at Trinity University, which analyzed historical stock and bond returns from 1926 to 1992. It has since been updated and debated, but remains a useful baseline.

What 4% means in practice:

• $500,000 portfolio = $20,000/year = $1,667/month
• $1,000,000 portfolio = $40,000/year = $3,333/month
• $2,000,000 portfolio = $80,000/year = $6,667/month

If you need $5,000/month in retirement income from your portfolio, you need $5,000 x 12 / 0.04 = $1,500,000 saved.

For a comprehensive approach to planning your retirement timeline, see our Retirement Planning Guide 2026.

Worked Examples

Example 1: Age 30, Starting with $50,000, Contributing $500/month at 7%

• Years to retirement (age 65): 35
• Current savings growth: $50,000 x (1.005833)^420 = $575,308
• Contribution growth: $500 x [((1.005833)^420 - 1) / 0.005833] = $900,527
• Projected total: $1,475,835
• Monthly income (4% rule): $4,919/month
• Gap vs $1M: $475,835 above target

This example shows the power of starting early. The $50,000 initial investment alone grows to over $575,000 through 35 years of compounding, and the $500/month contributions generate over $900,000.

Example 2: Age 40, Starting with $100,000, Contributing $800/month at 7%

• Years to retirement (age 65): 25
• Current savings growth: $100,000 x (1.005833)^300 = $572,542
• Contribution growth: $800 x [((1.005833)^300 - 1) / 0.005833] = $648,057
• Projected total: $1,220,599
• Monthly income (4% rule): $4,069/month
• Gap vs $1M: $220,599 above target

Despite contributing $800/month (vs. $500 in Example 1) and starting with double the savings, the 10 fewer years of compounding means a lower total. Time in the market is the dominant variable.

Example 3: Age 50, Starting with $200,000, Contributing $1,500/month at 6%

• Years to retirement (age 65): 15
• Current savings growth: $200,000 x (1.005)^180 = $490,819
• Contribution growth: $1,500 x [((1.005)^180 - 1) / 0.005] = $436,228
• Projected total: $927,047
• Monthly income (4% rule): $3,090/month
• Gap vs $1M: $72,953 short of target

At 50, catching up requires aggressive contributions. This person could close the gap by increasing monthly contributions to approximately $1,700 or working until age 67.

What This Calculator Does Not Include

This projection tool is intentionally simplified to give you a clear baseline. It does not factor in:

• Inflation: A 7% nominal return with 3% inflation is roughly 4% real return. Your future dollars will buy less than today’s dollars.
• Taxes on withdrawals: Traditional 401(k) and IRA withdrawals are taxed as ordinary income. Roth withdrawals are tax-free.
• Social Security income: The average monthly SSA benefit in 2026 is approximately $1,976. This supplements but should not replace personal savings.
• Market volatility: Returns vary significantly year to year. The 7% default is a long-term historical average for a diversified stock portfolio, not a guarantee.
• Required Minimum Distributions (RMDs): Starting at age 73 (75 for those born after 1960), the IRS requires withdrawals from traditional accounts.

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Frequently Asked Questions

Is 7% a realistic annual return assumption?

The S&P 500 has returned approximately 10% annually before inflation over the past century, or roughly 7% after inflation. A diversified portfolio of stocks and bonds typically returns 6-8% over long periods. The 7% default is a reasonable middle-ground assumption, but your actual returns will vary.

How much do I need to retire comfortably?

A common guideline is to replace 70-80% of your pre-retirement income. If you earn $80,000, aim for $56,000-$64,000 per year in retirement income. Using the 4% rule, that requires $1.4M-$1.6M saved. Social Security will cover a portion, reducing the savings target.

Should I prioritize paying off debt or saving for retirement?

If your employer offers a 401(k) match, contribute enough to get the full match first — it is a guaranteed 50-100% return. Then pay off high-interest debt (above 7-8%). After that, maximize retirement contributions. Low-interest debt (mortgages at 3-4%) can coexist with retirement investing.

What if I cannot save $500/month right now?

Start with whatever you can. Even $100/month at age 25 grows to over $264,000 by age 65 at 7%. Increase contributions by 1% of salary each year or redirect raises into retirement accounts. Small, consistent increases compound dramatically over decades.

When should I start taking Social Security?

You can claim Social Security as early as age 62, but benefits are permanently reduced by up to 30%. Full retirement age is 67 for those born after 1960. Delaying until age 70 increases benefits by 8% per year beyond full retirement age. If you are healthy and can afford to wait, delaying typically maximizes lifetime benefits. See SSA.gov for personalized estimates.

Does this calculator work for Roth accounts too?

Yes. The compound growth math is identical regardless of account type. The difference is tax treatment: traditional account projections represent pre-tax dollars (you will owe income tax on withdrawals), while Roth projections represent after-tax dollars (qualified withdrawals are tax-free).

What are catch-up contributions and who qualifies?

Workers aged 50 and older can contribute additional amounts beyond the standard limits. For 2026, the 401(k) catch-up is $7,500 (total $31,000), and the IRA catch-up is $1,000 (total $8,000). Starting in 2025, a “super catch-up” allows those aged 60-63 to contribute up to $11,250 extra to a 401(k).

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Sources: IRS Notice 2024-80 (2026 retirement contribution limits), Social Security Administration benefit estimates, Trinity Study / Journal of Financial Planning. Data reflects enacted 2026 figures as of March 2026.