How much should I contribute each month?

Aim to save 15% of your gross income for retirement. Maximize employer 401k matching first as it is free money.

Retirement Calculator: Estimate Your Savings & Nest Egg Goal

Q: How much do I need to retire?

A common rule is to save 25× your annual expenses (the "4% rule"). For $4,000/month spending, that is $1.2 million.

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What is Retirement?

To retire is to withdraw from active working life. For most people, retirement is a permanent life stage funded by personal savings, state pensions, and investments. The timing of your retirement is influenced by physical and mental health factors, occupational stress, and critical financial indicators.

While some individuals choose a gradual “semi-retirement” path by slowly reducing work hours, others must exit the workforce due to sudden health shifts. Generally, active retirement occurs between the ages of 55 and 70. Our online Retirement Calculator helps you determine if your savings plan aligns with your desired lifestyle timelines.

📐 Compound Interest Nest Egg Formula

Future Value (FV) = PV × (1 + r)^n + PMT × [((1 + r)^n - 1) / r]

The math used to project accumulated compound savings over n compounding periods at interest rate r.

How Much Do You Need to Save for Retirement?

Determining your target nest egg is a highly personalized calculation that depends on your health, lifestyle choices, and retirement goals. Financial planners utilize three common rules of thumb to establish savings targets:

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1. The 10% Savings Rule

Recommends setting aside 10% to 15% of your pre-tax income every year during your working years. Saving 10% annually starting at age 25 makes accumulating a $1 million nest egg highly achievable by age 65.

2. The 80% Replacement Rule

Suggests that maintaining your pre-retirement standard of living requires approximately 70% to 80% of your pre-retirement income. If your pre-retirement salary was $100,000, you should aim for $70,000 to $80,000 in annual retirement income.

3. The 4% Withdrawal Rule

Helps you determine your required nest egg based on your estimated annual spending. By dividing your desired annual retirement income by 4%, you find your target nest egg (equivalent to saving 25 times your annual expenses).

The Impact of Inflation on Your Savings

Over long horizons, inflation silently erodes the purchasing power of your money. In the United States, the historical inflation rate has averaged approximately 2.6% per year over the last 30 years. This means that a single dollar today has less than half the buying power of a dollar from 30 years ago. To see how purchasing power changes over time under different inflation rates, explore our dedicated Inflation Rate Calculator.

Common Sources of Retirement Income

Most retirement plans combine multiple income streams to cover living expenses:

1. Government Social Security

Social Security is a federal social insurance program funded by the Federal Insurance Contributions Act (FICA) payroll tax. It is designed to replace approximately 40% of an average worker’s pre-retirement income. While lower-income earners receive a larger proportion of their pre-retirement earnings, higher-income earners must rely more heavily on personal savings. To estimate your future monthly benefits, utilize our Social Security Calculator.

2. Employer-Sponsored Accounts (401k, 403b, 457)

Accounts like the 401(k) and 403(b) allow you to contribute pre-tax earnings that grow tax-deferred. Many employers match these contributions up to a set percentage of your gross income (e.g., matching up to 3% of your salary). Contributing at least enough to capture your full employer match is highly recommended. To model your contribution projections, explore our 401K Calculator.

3. Individual Retirement Accounts (IRAs and Roth IRAs)

IRA Calculator and Roth IRA Calculator.

4. Defined Benefit Pensions

Commonly found in public sector and government employment, traditional pensions pool employer-managed capital to guarantee a lifelong monthly retirement payout. To calculate your estimated pension yields, use our Pension Calculator.

5. Broad Investment Portfolios and CDs

If you have maxed out your tax-advantaged account contribution limits, personal brokerage investments (such as low-cost index funds, individual stocks, commodities, and real estate properties) are excellent ways to grow wealth. For low-risk, guaranteed returns, Certificates of Deposit (CDs) and fixed-income assets are ideal options, particularly as you approach retirement. For more information, use our Investment Calculator.

Alternative Streams of Retirement Income

You can also fund your retirement by leveraging other assets:

Home Equity & Reverse Mortgages — Allows retirees to receive regular payouts from an equity lender in exchange for home ownership transfer down the road.
Annuities — Converting a lump sum into a guaranteed stream of lifelong income using our Annuity Calculator and Annuity Payout Calculator.
Passive Rental Income — Earning monthly rental income from property investments. Use our Rental Property Calculator to evaluate real estate options.
Family Inheritance — Receiving estate payouts, which may be subject to capital gains or localized taxes. To model these liabilities, use our Estate Tax Calculator.

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🔗 Related Retirement Planning Calculators

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💡 Expert Retirement Planning Tips

Start saving as early as possible to maximize the growth of your investments over time through the power of compound interest.
To find your target annual inflation rate, use 2.6% as a baseline, matching the historical average of the last 30 years in the United States.
If you have reached retirement age, use our RMD Calculator to ensure you meet IRS required minimum distribution limits.

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📚 Authoritative Resources

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Frequently Asked Questions about the Retirement Calculator

How much do I need to retire?

A standard guideline is to save 25 times your estimated annual expenses (known as the 4% rule). For example, if you plan to spend $4,000 per month ($48,000 annually), you will need a retirement nest egg of approximately $1.2 million.

How much should I contribute to my retirement account each month?

A general guideline is to save 10% to 15% of your pre-tax income during your working years. You should prioritize maximizing your employer’s 401(k) matching program first, as this is essentially free money that will help grow your nest egg faster.

What is the difference between a traditional IRA and a Roth IRA?

Traditional IRAs are funded with pre-tax dollars, meaning contributions reduce your current taxable income, but withdrawals in retirement are taxed as ordinary income. In contrast, Roth IRAs are funded with after-tax dollars, allowing your contributions to grow and be withdrawn completely tax-free in retirement.