Retirement Calculator: Plan Your Savings
Use this retirement planning calculator to project your balance, check if you are on track, and find how much more to save each month.
What Is the Retirement Calculator?
The Retirement Calculator is a free retirement savings calculator that answers the question most people genuinely want answered: am I on track for retirement? It projects your savings balance at your target retirement date, converts that balance to today's purchasing power using inflation adjustment, computes the nest egg you actually need based on the 4% withdrawal rule, and then tells you exactly how much more you would need to save per month to close any gap. All calculations run in your browser—no signup, no account, no data sharing.
This tool is for people who want a reality check on their retirement plan, not just a projection of what their current savings will become. The key output is not just a number but a diagnosis: are you on track, ahead of schedule, or behind, and if behind, what specifically needs to change?
Key Features
- Retirement savings balance projection: Compound growth of your current savings plus ongoing monthly contributions over the years remaining until retirement.
- Inflation-adjusted balance in today's dollars: The projected nominal balance is converted to real (today's) dollars using your inflation assumption, so you can understand what the future balance actually buys.
- Required nest egg calculation with 4% rule: The calculator computes the savings target you need based on your expected annual retirement expenses, using the widely-accepted 4% safe withdrawal rate as the standard benchmark.
- Additional monthly savings needed to close gap: If there is a shortfall between your projected balance and required nest egg, the calculator computes the exact additional monthly contribution you would need to eliminate that gap.
How to Use the Retirement Calculator
Step 1: Enter Your Age and Timeline
Enter your Current Age and your Target Retirement Age. The difference determines how many years of growth your savings have. Also enter your Life Expectancy (or the age you want to plan to), which affects how large your nest egg needs to be.
Step 2: Enter Current Savings and Monthly Contribution
Enter your total current retirement savings in the Current Savings field. Include all retirement accounts: 401(k), IRA, Roth IRA, pension cash value, and any other invested assets earmarked for retirement. Do not include your home equity or emergency fund. Then enter your current Monthly Contribution: the total you are contributing to all retirement accounts each month.
Step 3: Enter Expected Annual Expenses in Retirement
Enter the Annual Expenses in Retirement: the amount you expect to spend per year once retired. This is the most consequential input because the required nest egg is directly proportional to this number. Consider that some expenses may decrease in retirement (commuting, work clothing, savings contributions) while others may increase (healthcare, travel, leisure). Most financial planners suggest budgeting 70%–90% of pre-retirement income, though individual variation is large.
Step 4: Set Return and Inflation Assumptions
Enter your expected Annual Return during the accumulation phase (typically 6%–8% for a diversified portfolio) and your assumed Inflation Rate (2%–3% is typical). These rates significantly affect both the projected balance and the real value of that balance.
Step 5: Review Your Retirement Readiness
After calculating, review the key results:
- Projected Balance at Retirement: nominal dollars in your account at retirement age
- Inflation-Adjusted Balance: what that balance is worth in today's purchasing power
- Required Nest Egg: what you need based on annual expenses and the 4% rule
- Gap (or Surplus): the difference between projected and required
- Additional Monthly Savings Needed: if behind, this is the amount that would close the gap
Practical Examples
Example 1: On Track at 40 Age: 40 | Retirement age: 65 | Current savings: $250,000 | Monthly contribution: $2,000 | Annual expenses in retirement: $60,000 | Return: 7% | Inflation: 3% Required nest egg: $1,500,000 (25 × $60,000) Projected balance at 65: approximately $1,750,000 Inflation-adjusted projected balance: approximately $870,000 in today's dollars Status: On track with a surplus: the projected balance exceeds the required nest egg.
Example 2: Behind at 45 Age: 45 | Retirement age: 65 | Current savings: $90,000 | Monthly contribution: $800 | Annual expenses: $55,000 | Return: 7% | Inflation: 3% Required nest egg: $1,375,000 Projected balance: approximately $800,000 Gap: approximately $575,000 Additional monthly savings needed: approximately $1,200/month to close the gap by age 65
Example 3: Early Saver Checking Progress Age: 30 | Retirement age: 60 | Current savings: $40,000 | Monthly contribution: $1,500 | Annual expenses: $45,000 | Return: 7% | Inflation: 3% Required nest egg: $1,125,000 Projected balance at 60: approximately $1,580,000 Status: Ahead of schedule: current savings rate is sufficient for early retirement at 60.
Tips and Best Practices
- Use conservative return assumptions. A 7% return is reasonable for a long-term diversified portfolio, but using 5%–6% gives you a safety margin. Retiring with a surplus is far preferable to retiring into a shortfall.
- Revisit this calculator every two to three years. Salary changes, contribution rate changes, market performance, and shifting retirement expense estimates all change the diagnosis. What was "on track" at 40 may need adjustment at 45.
- Focus on the gap, not just the projected balance. A large projected balance is meaningless if your planned spending in retirement is also high. The gap between projected and required is the actionable number.
- Do not count home equity unless you plan to sell. Many people have significant home equity but plan to stay in their home throughout retirement. Unless you plan to downsize or use a reverse mortgage, home equity should not be included in your retirement savings figure.
Common Issues and Troubleshooting
Required nest egg seems very large: Check your annual retirement expenses input. If you entered $120,000 in annual expenses, your required nest egg is $3,000,000. That is correct. High spending in retirement requires a large portfolio. Consider whether your retirement expense estimate reflects your actual planned lifestyle.
Projected balance is higher than required nest egg, but result shows a gap: This can happen when the inflation-adjusted balance (in today's dollars) is used for the comparison. The nominal projected balance may be large, but its real purchasing power may be lower. Verify which comparison the results section is using.
Additional monthly savings appears very large: Late starts with large gaps require significant additional savings. At 55 with a $500,000 gap and only 10 years remaining, the mathematics require saving a large amount monthly. If the required additional savings is not feasible, consider adjusting retirement age (working 2–3 more years has a substantial effect) or reducing planned retirement expenses.
Social Security not included: This calculator focuses on the portfolio component of retirement income. Social Security benefits will reduce the income your portfolio needs to provide, effectively lowering your required nest egg. Factor your expected Social Security benefit into your annual expenses calculation by subtracting it from total needs to get the portfolio-dependent portion.
Privacy and Security
The Retirement Calculator runs entirely in your browser. Your savings figures, income, expenses, and all other inputs are never transmitted to any server, stored, or analyzed. Your financial data remains entirely private on your device.
Frequently Asked Questions
Is the Retirement Calculator free to use? Yes, completely free. The full retirement readiness analysis (projection, gap calculation, and additional savings needed) is available at no cost with no account.
Does the Retirement Calculator work offline? Yes. Once the page loads, all calculations run locally without requiring an internet connection.
Is my data safe with the Retirement Calculator? Yes. No data leaves your browser. Nothing is transmitted, logged, or stored on any server.
What is the 4% rule? The 4% rule states that if you withdraw 4% of your portfolio in the first year of retirement and adjust for inflation each subsequent year, a diversified portfolio has historically lasted 30 years in nearly all historical market environments. This means your required nest egg is 25 times your first-year withdrawal (the reciprocal of 4%). For retirements longer than 30 years, a 3%–3.5% withdrawal rate is more conservative.
How much do I actually need to retire? The simple answer: 25 times your annual expenses in retirement. If you plan to spend $60,000 per year, you need $1,500,000. If you expect Social Security to cover $20,000, you only need the portfolio to supply $40,000, requiring $1,000,000. The specific number depends heavily on your spending plans and income sources.
What if my employer offers a pension? A defined-benefit pension reduces the income your portfolio needs to supply, similar to Social Security. Subtract your expected annual pension income from your total retirement expenses to get the portfolio-dependent portion, then multiply by 25 for your actual required nest egg.
Should I use nominal or inflation-adjusted figures? The calculator shows both: the nominal balance (in future dollars) and the inflation-adjusted balance (in today's purchasing power). For comparing to your required nest egg in today's terms, use the inflation-adjusted figure. The nominal balance is useful for comparing against the nominal retirement account statements you will see in the future.
How does return rate during retirement differ from accumulation? During accumulation, you can tolerate more volatility and typically hold a higher equity allocation. During retirement, you are withdrawing from the portfolio, which creates sequence-of-returns risk: poor returns in the first several years of retirement can permanently deplete a portfolio even if later years are excellent. Many advisors suggest gradually shifting to a more conservative allocation as retirement approaches.
What counts as "retirement savings"? Include all invested assets intended for retirement: 401(k), 403(b), 457, Traditional IRA, Roth IRA, SEP-IRA, pension cash value, taxable investment accounts. Do not include: checking/savings account balances (emergency fund), home equity, physical property, or non-liquid assets.
Is this calculator appropriate for non-US users? The core projection mechanics apply globally. The 4% rule is US-based research but has been studied internationally. Tax references are US-specific. Users in other countries should substitute their local equivalents for any tax-advantaged account references.
Related Tools
The Coming Soon: Early Retirement Calculator focuses on FIRE planning for those targeting retirement before 65. The 401k Calculator provides a salary-percentage contribution model for 401(k)-specific projections. The Coming Soon: Retirement Countdown Calculator shows exactly how many days, weeks, and months remain until your retirement date.