Retirement Calculator

About

A retirement calculator is basically a time machine for your money. You feed it your current savings, your monthly contributions, your age, and some reasonable assumptions about investment returns and inflation — and it shows you a vision of your financial future that's specific to you, not some generic rule of thumb. The whole exercise of retirement planning comes down to one fundamental question: will the money I'm setting aside today be enough to support the life I want to live when I stop working? The answer depends on a handful of variables that interact in ways that aren't always intuitive. Save an extra $300 a month and it might not feel like much today, but over 30 years at 7% returns, that's an extra $365,000. Delay retirement from 65 to 67 and you give your savings two more years to grow, reduce the number of years you need to fund, and potentially increase your Social Security checks — a triple win. What makes retirement planning uniquely challenging is that you're making decisions today based on assumptions about something that's decades away. You don't know what investment returns will be, what inflation will do, what healthcare will cost, or even exactly what age you'll die. The best you can do is make reasonable assumptions, build some margin for error into your plan, and revisit the numbers every year or two as you get closer and the picture becomes clearer. This calculator handles all the heavy math: projecting your savings growth with compound interest, calculating the nest egg you need based on your desired income and withdrawal rate, factoring in Social Security, and adjusting for inflation so you're thinking in today's dollars. It answers the three questions every future retiree has: Am I on track? If not, how far off am I? And what's the one thing I can change today that makes the biggest difference?

How to Use

Run this calculator whenever you need a reality check on your retirement plans. The most common times are: when you're setting up your first 401(k) or IRA and wondering if you're saving enough; when you get a raise and want to know how much more you should be tucking away; when you're considering a career change or taking a pay cut; when you hit a milestone age (30, 40, 50) and want to check your progress; when you're thinking about early retirement and need to know if the numbers work; when you're considering relocating to a lower-cost area or country; when you're approaching retirement and want to fine-tune your withdrawal strategy; after a major market downturn to see how it affects your timeline; or whenever someone tells you you're crazy for not saving more and you want to see if they're right. Honestly, running this once a year as a personal financial checkup is a habit that pays for itself many times over.

1. Start with your current age and the age you want to retire. Be honest with yourself about your target retirement age — early retirement is great if the math works, but if you're 45 with $50,000 saved, retiring at 55 might require some pretty extreme saving.
2. Enter your current retirement savings balance and how much you're adding each month. Include any employer match in your contribution number — that's free money and it adds up fast. If you're not sure about your current balance, check your 401(k) or IRA statement before guessing.
3. Set your expected annual return and inflation rate. For returns, 7% is a solid historical average for a stock-heavy portfolio, 5-6% for a balanced mix. For inflation, 3% is the standard long-term average, though we've seen higher and lower. The inflation number matters more than most people realize — at 3%, your $60,000 target income becomes $121,000 in 30 years, but the calculator shows you everything in today's dollars so you don't get confused.
4. Fill in your desired monthly retirement income and expected Social Security. Your desired income doesn't have to match what you earn today — many people spend less in retirement (no commute, no work wardrobe, mortgage might be paid off). Social Security provides a benefits estimate on your annual statement at ssa.gov — use that number.
5. Hit calculate and study the results. The most important number is the shortfall or surplus. If you're short, try increasing your monthly contribution by $100 or $200 and see how much it helps. Try delaying retirement by 2-3 years. Try reducing your target income. Each scenario shows you the trade-offs so you can make an informed decision about what matters most to you.

Common Use Cases

• A 28-year-old earning $55,000 with $8,000 in a 401(k) and contributing 10% ($458/month) with a 4% employer match wants to know if they're on track. At 7% returns with 3% inflation, targeting $4,000/month retirement income (in today's dollars) at age 65, they'll have about $2.1 million — well above the roughly $1.2 million nest egg they need. The verdict: keep doing what you're doing, and consider bumping contributions with every raise.
• A 45-year-old couple with $120,000 saved between two 401(k)s, contributing $1,200/month total, wanting to retire at 62 with $5,000/month income and expecting $2,800 from Social Security. At 6% returns and 3% inflation, they'll have roughly $750,000 at 62 but need about $660,000 — a small surplus. But if returns average 5% instead of 6%, they come up short by about $80,000. The takeaway: they're close but have little margin; increasing contributions to $1,500/month or working until 65 adds significant buffer.
• A 55-year-old single person with $300,000 saved, contributing $2,000/month, wants to retire at 67 with $4,500/month income and expects $1,800 from Social Security. At 6% returns, they project to $720,000, needing $810,000 — a $90,000 shortfall. By increasing monthly contributions to $2,500, working to 69, or reducing target income to $4,000/month, the shortfall turns into a surplus. The calculator shows exactly which lever pulls the hardest.
• A 35-year-old freelancer with no employer retirement plan, $25,000 in a Roth IRA, contributing $500/month irregularly. They want to retire at 65 with $3,500/month and expect $1,500 from Social Security. The calculator projects $620,000 at retirement, needing $600,000 — a slim surplus. If markets underperform at 5% instead of 7%, they fall short by $180,000. The lesson for the freelancer: be more aggressive with savings since you don't have an employer match cushion.
• A 60-year-old planning to retire at 65 with $500,000 saved, contributing $3,000/month, wanting $6,000/month in retirement income and expecting $2,200 from Social Security. At 5% conservative returns, they project to $725,000 but need about $1.14 million — a $415,000 shortfall. This is a tough but honest picture. Options: delay retirement to 70 (adds growth, reduces years), reduce target income to $4,500, downsize housing, or relocate to a lower-cost area. The calculator makes these hard decisions concrete rather than abstract.

Pro Tips

• Maximize your employer match before anything else. If your company matches 50% of your contributions up to 6% of your salary, that's an instant 50% return on your money. No investment in the world guarantees that. Contribute at least enough to get the full match before putting a dollar anywhere else.
• Don't forget about healthcare costs in retirement. Fidelity estimates a 65-year-old couple retiring in 2024 will need about $315,000 (after tax) just for medical and dental expenses throughout retirement. That number is shocking for most people — factor it into your desired monthly income target rather than pretending it doesn't exist.
• Consider Roth conversions in your early retirement years. If you retire at 60 but don't need RMDs until 73, you have a window of lower taxable income. Converting some traditional IRA money to Roth during those years can save you hundreds of thousands in taxes over your retirement. Work with a tax professional on this — it's complicated but worth it for most people with significant traditional balances.
• The 4% rule is a starting point, not a law. If you retire at 55 and have a 40+ year retirement ahead of you, you might need a 3.5% or even 3% withdrawal rate. If you're willing to adjust your spending in down years (spend less when the market is bad), you can safely withdraw more on average. Flexible withdrawal strategies consistently outperform fixed percentage approaches in historical backtests.
• Rebalance your portfolio at least once a year as you approach retirement. In your 20s and 30s, being 90-100% in stocks is fine. By your 40s, start adding bonds. In your 50s, aim for 60-70% stocks. By retirement, 50-60% stocks with the rest in bonds and cash gives you growth while protecting against sequence of returns risk. A rule of thumb: subtract your age from 110 for the percentage in stocks (so at 60, 50% stocks).