Project your retirement portfolio and see what monthly income it can sustainably generate.
Enter your savings, age, and expected return to project your retirement corpus and monthly income.
Uses compound interest + 4% SWR for monthly income estimate. Educational use only.
This calculator uses the standard compound interest formula to project how your current savings and monthly contributions will grow to your retirement age. At retirement, the 4% Safe Withdrawal Rate is applied to estimate a sustainable monthly income — meaning you withdraw 4% of your portfolio per year, and it should last 30+ years.
Future Value = Current Savings × (1 + monthly return)months + Monthly Contribution × [(1 + monthly return)months − 1] / monthly return
The most important question in retirement planning is deceptively simple: how much money do you need to retire comfortably? The answer depends on three variables — your expected annual expenses in retirement, your expected investment return, and how long your retirement lasts. Our free retirement calculator handles all the math instantly.
As a quick benchmark: financial planners traditionally suggest 10–12× your final annual salary saved by retirement age 65. The FIRE community uses a more precise formula: 25× your annual expenses (the 4% rule). This retirement calculator uses compound interest to show you exactly where your savings are headed.
Enter your current retirement savings, how much you invest monthly, your current and target retirement age, and your expected annual return. The calculator projects your portfolio using the standard compound interest formula:
Future Value = Present Value × (1 + r)n + Monthly Contribution × [(1 + r)n − 1] / r
Where r = monthly return rate (annual rate ÷ 12) and n = number of months until retirement. At retirement, we apply the 4% Safe Withdrawal Rate to estimate sustainable monthly income: Monthly Income = (Portfolio × 0.04) ÷ 12.
Where should your retirement savings stand at each age? These benchmarks are based on saving 15% of income from age 25, invested at 7% annual returns. Use the calculator to see your personal projection.
| Age | Recommended Savings (×Annual Salary) | Example: $60K Salary | Example: $100K Salary |
|---|---|---|---|
| 25 | 0.5× | $30,000 | $50,000 |
| 30 | 1× | $60,000 | $100,000 |
| 35 | 2× | $120,000 | $200,000 |
| 40 | 3× | $180,000 | $300,000 |
| 45 | 4× | $240,000 | $400,000 |
| 50 | 6× | $360,000 | $600,000 |
| 55 | 7× | $420,000 | $700,000 |
| 60 | 8× | $480,000 | $800,000 |
| 65 | 10–12× | $600K–$720K | $1M–$1.2M |
Behind on these benchmarks? Don't panic — the math is on your side if you act now. A 45-year-old with $150,000 saving $2,000/month at 7% returns will have $982,000 by age 65. You don't need to hit every benchmark exactly — you need a plan and consistent action.
The following table shows the monthly savings required to accumulate $1,000,000 by age 65, assuming 7% annual returns and starting from $0:
| Start Age | Years to Save | Monthly Savings for $1M | Monthly Savings for $1.5M | Monthly Savings for $2M |
|---|---|---|---|---|
| 22 | 43 | $264/mo | $396/mo | $528/mo |
| 25 | 40 | $326/mo | $489/mo | $652/mo |
| 30 | 35 | $499/mo | $749/mo | $998/mo |
| 35 | 30 | $778/mo | $1,167/mo | $1,556/mo |
| 40 | 25 | $1,243/mo | $1,865/mo | $2,487/mo |
| 45 | 20 | $2,074/mo | $3,111/mo | $4,148/mo |
| 50 | 15 | $3,686/mo | $5,529/mo | $7,372/mo |
Your most powerful retirement asset in your 20s is time. Every dollar you invest at 25 becomes $14.97 by age 65 at 7% returns (20× more than a dollar invested at 50). Your priority order in your 20s should be:
The 30s are often peak earning growth years, but also peak spending pressure (mortgages, childcare, lifestyle upgrade temptation). Key moves:
Decisions in your 40s often determine whether you retire comfortably or struggle. Your investments are now large enough that market returns contribute significantly to your wealth — compound interest is beginning to do heavy lifting.
Your 50s bring catch-up contribution limits — take advantage of them. 401(k) catch-up is $7,500 extra/year over 50; IRA catch-up is $1,000 extra. Also in your 50s: sharpen your retirement spending plan, stress-test different scenarios, and consider a financial advisor for decumulation strategy.
| Starting Balance | Monthly Savings | After 30 Years (7%) | Monthly Income (4%) |
|---|---|---|---|
| $0 | $500 | $567,000 | $1,890/mo |
| $0 | $1,000 | $1,134,000 | $3,780/mo |
| $0 | $2,000 | $2,268,000 | $7,560/mo |
| $50,000 | $1,500 | $1,772,000 | $5,907/mo |
| $100,000 | $1,000 | $1,898,000 | $6,327/mo |
| $100,000 | $2,000 | $3,032,000 | $10,107/mo |
| $200,000 | $2,000 | $3,795,000 | $12,650/mo |
| Country | Account Type | 2024 Annual Limit | Tax Treatment |
|---|---|---|---|
| USA | 401(k) / 403(b) | $23,000 ($30,500 over 50) | Pre-tax contributions, taxed on withdrawal |
| USA | Roth IRA | $7,000 ($8,000 over 50) | After-tax, tax-free growth and withdrawal |
| USA | HSA | $4,150 individual / $8,300 family | Triple tax advantage — best account available |
| UK | ISA | £20,000 | After-tax, completely tax-free growth |
| UK | SIPP | Up to £60,000 (annual allowance) | Tax relief on contributions |
| Canada | RRSP | 18% of prior year income (max $31,560) | Pre-tax, taxed on withdrawal |
| Canada | TFSA | $7,000 | After-tax, completely tax-free growth |
| India | NPS | ₹1,50,000 (Tier I) | Tax deduction under 80CCD(1B) |
| India | PPF | ₹1,50,000 | EEE — Exempt-Exempt-Exempt |
| Australia | Superannuation | $27,500 concessional | 15% tax on contributions and earnings |
The retirement calculator above works for any scenario. Here are detailed examples to help you interpret your results and understand what the numbers mean in practice.
Age: 25. Current savings: $5,000 (just opened a Roth IRA). Monthly savings: $500. Target retirement age: 65. Expected return: 7%. Result: $1,355,000 at retirement. Monthly income (4% rule): $4,517/month. This is the power of starting early — $500/month from age 25 builds a portfolio that supports $4,500+/month for life. Total invested: only $245,000. Compound growth contributed over $1.1 million.
Age: 40. Current savings: $120,000. Monthly savings: $2,500. Target retirement age: 65. Expected return: 7%. Result: $2,213,000 at retirement. Monthly income: $7,377/month. Note: much of this growth comes from the $120,000 that compounds for 25 years ($120,000 × (1.07)25 = $651,000) plus contributions. The existing portfolio is doing enormous work.
Age: 50. Current savings: $200,000. Monthly savings: $3,500. Target retirement age: 67. Expected return: 7%. Result: $1,848,000 at retirement. Monthly income: $6,160/month. Even starting at 50 with relatively modest savings, consistent $3,500/month contributions combined with compound growth produce a very comfortable retirement. The lesson: it's never too late, but every year earlier makes a dramatic difference.
Use this table to quickly assess whether your current savings and contributions are on track for the retirement income you need:
| Desired Monthly Income | Portfolio Needed | To Reach in 20 Yrs (7%) | To Reach in 30 Yrs (7%) |
|---|---|---|---|
| $2,000/mo ($24K/yr) | $600,000 | $1,300/mo from $0 | $530/mo from $0 |
| $3,000/mo ($36K/yr) | $900,000 | $1,950/mo from $0 | $795/mo from $0 |
| $4,000/mo ($48K/yr) | $1,200,000 | $2,600/mo from $0 | $1,060/mo from $0 |
| $5,000/mo ($60K/yr) | $1,500,000 | $3,250/mo from $0 | $1,325/mo from $0 |
| $6,667/mo ($80K/yr) | $2,000,000 | $4,330/mo from $0 | $1,765/mo from $0 |
| $8,333/mo ($100K/yr) | $2,500,000 | $5,415/mo from $0 | $2,207/mo from $0 |
For US-based retirement planning, Social Security significantly reduces how much you need from your investment portfolio. The average Social Security benefit in 2024 is approximately $1,907/month ($22,884/year). If you delay filing from age 62 to age 70, benefits increase by approximately 76%.
| Filing Age | Benefit vs Full Retirement Age | Example (FRA benefit $2,000/mo) | Lifetime Value (to age 85) |
|---|---|---|---|
| 62 (earliest) | -30% | $1,400/mo | ~$403,200 |
| 65 | -13.3% | $1,733/mo | ~$415,920 |
| 67 (FRA) | 0% | $2,000/mo | ~$432,000 |
| 70 (maximum) | +24% | $2,480/mo | ~$446,400 |
Delaying to 70 is generally optimal for those in good health and who can bridge the gap with investment income. The break-even age vs filing at 67 is approximately age 83 — if you expect to live beyond 83, delaying to 70 pays more in lifetime benefits.
Leaving employer match money on the table is the most expensive retirement mistake most employees make. A 3% match on a $70,000 salary is $2,100/year of free money. Over 30 years at 7%, that uncollected $2,100/year grows to $212,000 in forfeited wealth. Always contribute at least enough to get the full employer match — no exceptions.
Americans cash out 401(k) accounts at job changes at alarming rates. A $30,000 401(k) cashed out at age 35 doesn't just cost the $30,000 — you also pay income taxes plus a 10% early withdrawal penalty (losing roughly $10,000 immediately), AND you lose 30 years of compound growth. That $30,000 at 7% for 30 years would have grown to $228,000. The real cost of cashing out: over $200,000 in lost retirement wealth.
A 35-year-old with a portfolio 70% in bonds and 30% in stocks is leaving enormous returns on the table. With 30 years until retirement, short-term volatility is irrelevant — what matters is long-term growth. Moving from a 30/70 (stocks/bonds) allocation to 80/20 on a $200,000 portfolio can add over $400,000 in additional wealth by retirement, assuming historical return differences.
Actively managed mutual funds average 0.8–1.2% expense ratios. Vanguard/Fidelity index funds charge 0.03–0.10%. On a $500,000 portfolio, a 1% fee difference costs $5,000/year — and those fees compound. Over 20 years, a 1% lower expense ratio adds approximately $260,000 to a $500,000 portfolio. Always choose low-cost index funds over actively managed alternatives.
Knowing your retirement number is step one. Actually building it requires consistent strategies that work across market cycles, life events, and competing financial priorities. Here are the approaches that have been proven to work over decades of research and real-world outcomes.
The most important retirement habit is simple: invest before you spend. The moment your paycheck arrives, automatically direct your savings amount to investment accounts before paying any bills or making any discretionary spending decisions. This is called "paying yourself first." People who do this build dramatically more wealth than those who invest "whatever is left at the end of the month" — because for most people, nothing is left at the end of the month.
Every year, increase your 401(k) contribution percentage by 1%. Go from 6% to 7% in year two, 7% to 8% in year three, and so on. On a $60,000 salary, each 1% increase is $50/month. Most people barely feel a 1% reduction in take-home pay, especially when it coincides with an annual raise. This habit alone, started early in a career, can add hundreds of thousands of dollars to a retirement account with virtually no felt sacrifice.
Every time you get a salary increase, save 50% of the after-tax raise amount and spend the other 50%. This allows your lifestyle to gradually improve while dramatically accelerating wealth accumulation. A $5,000 annual raise at 25% tax rate is $3,750 more take-home. Saving 50% = $1,875/year more invested. Over 20 years at 7%, this single decision adds approximately $87,000 to your retirement portfolio.
Single people face unique retirement planning challenges: no second income as backup, no partner's Social Security, and often higher per-person housing costs. However, single FIRE pursuers often have simpler expense structures and more control over their financial decisions. Key considerations: ensure adequate disability insurance (critical for income protection), build strong social and community connections for retirement fulfillment, and consider a slightly lower SWR (3.5%) to account for single-income household financial fragility.
Couples have significant advantages: two incomes to invest, two Social Security benefits, shared housing costs, and mutual support during market stress. Key decisions for couples: whose career to optimize for (often the lower-earning partner reduces work first), how to coordinate Social Security filing (typically delay the higher earner's to 70), and whether to maintain separate investment accounts (for individual flexibility) or pooled accounts (for simplicity).
Starting retirement savings at 45 or 50 is genuinely challenging but not hopeless. Key tools: 401(k) catch-up contributions ($7,500 extra/year over 50), IRA catch-up ($1,000 extra/year), delaying Social Security, working slightly longer than initially planned, and dramatically reducing expenses. A 50-year-old who saves $3,000/month at 7% for 17 years (to age 67) accumulates $1,012,000 — enough for a comfortable traditional retirement supplemented by Social Security.
Jordan (teacher, $55,000/yr) and Alex (engineer, $110,000/yr) both want to retire at 60. Jordan contributes 8% to their 403(b) ($4,400/yr) and has $45,000 saved at age 35. Alex contributes 15% to their 401(k) ($16,500/yr) and has $180,000 saved at age 35. At 7% returns over 25 years:
The lesson: even on a teacher's salary, consistent contributions over 25 years build substantial wealth — especially combined with a pension. The engineer's higher income produces dramatically more due to higher contribution amounts.
The 7% annual return used as a baseline in retirement calculators is an average — actual year-to-year returns fluctuate dramatically:
| Year | S&P 500 Return | $100,000 Portfolio Value |
|---|---|---|
| Year 1: +26% | Bull market | $126,000 |
| Year 2: -19% | Correction | $102,060 |
| Year 3: +15% | Recovery | $117,369 |
| Year 4: +28% | Strong bull | $150,232 |
| Year 5: -38% | Bear market | $93,144 |
| Year 6: +26% | Recovery | $117,361 |
| Average: 8.7% | But felt chaotic | $117,361 vs $159,000 at steady 8.7% |
This volatility is why the retirement calculator uses an average. Real portfolios zigzag wildly — the key is to not react to those zigs and zags. Investors who stay the course through all of this outperform investors who try to time the market by approximately 1.5–2% annually (according to Dalbar's annual Quantitative Analysis of Investor Behavior study).
When the retirement calculator shows your projected corpus and monthly income, here's how to interpret those numbers in the context of real-world retirement planning.
Apply the 4% rule to your projected corpus: multiply by 0.04 to get annual sustainable income, divide by 12 for monthly. If the monthly income exceeds your planned retirement expenses — you're on track. If it falls short — use the calculator to experiment with higher monthly contributions or a later retirement age to close the gap.
Working one additional year has a dramatic mathematical impact on retirement outcomes: (1) You add one more year of contributions. (2) Your existing portfolio grows for one more year. (3) You remove one year of withdrawals. (4) Your portfolio has one more year to compound before drawdown begins. Combined, one extra year of work can increase a retirement portfolio's sustainability by 3–5 years of retirement spending — a 15–25% improvement in retirement security for just 12 months of additional work.
| Country | Account | Access Age | Penalty for Early Access |
|---|---|---|---|
| USA | 401(k) / IRA | 59.5 | 10% penalty + income tax before 59.5 (exceptions exist) |
| USA | Roth IRA (contributions) | Any age | No penalty on contributions; earnings restricted until 59.5 |
| UK | SIPP | 55 (57 from 2028) | Tax charges for early access |
| India | NPS | 60 | Partial withdrawal permitted for specific purposes after 3 yrs |
| India | EPF | 58 (or on retirement) | TDS applicable on early withdrawal before 5 years |
| Australia | Superannuation | 60 | Cannot generally access before preservation age |
| Canada | RRSP | 71 (convert to RRIF) | Withholding tax on early withdrawals |
One of the most important and most overlooked retirement planning factors is inflation's long-term impact on purchasing power. If you retire today needing $50,000/year, here's what that same lifestyle will cost at 3% annual inflation:
| Years into Retirement | Cost of $50K/yr Lifestyle (3% inflation) | Cost at 2% Inflation |
|---|---|---|
| Year 1 | $51,500 | $51,000 |
| Year 5 | $57,964 | $55,204 |
| Year 10 | $67,196 | $60,950 |
| Year 20 | $90,306 | $74,297 |
| Year 30 | $121,363 | $90,568 |
This is why maintaining equity exposure in retirement is critical — only stocks have historically outpaced inflation over long periods. A 100% bond portfolio may seem safe but will likely lose purchasing power to inflation over a 30-year retirement. The standard recommendation: keep at least 50% in equities even in retirement to ensure your income keeps pace with rising costs.
The retirement calculator gives projections based on your inputs. Here's how to make those inputs as accurate as possible for more reliable results.
Retirement spending is rarely a flat percentage of pre-retirement income. Research shows a "retirement spending smile" — spending is often highest in early retirement (active travel and recreation), dips in mid-retirement, and rises again in late retirement (healthcare). Budget for all three phases:
Your expected return depends on your actual asset allocation, not just "the stock market."
| Portfolio Allocation | Expected Nominal Return | Expected Real Return |
|---|---|---|
| 100% Stocks (global) | 9–10% | 6–7% |
| 80% Stocks / 20% Bonds | 8–9% | 5–6% |
| 60% Stocks / 40% Bonds | 7–8% | 4–5% |
| 40% Stocks / 60% Bonds | 5–6% | 2–3% |
| 100% Bonds | 3–4% | 0–1% |
For most retirement savers in their accumulation phase (more than 10 years to retirement), 7% real return is a reasonable planning assumption with a globally diversified, stock-heavy portfolio. As you approach retirement, a more conservative assumption (5–6%) accounts for the gradual shift toward bonds.
Delaying retirement by just one year has a compound effect that most people dramatically underestimate. On a $1,000,000 portfolio with $40,000/year spending:
This is why the "one more year" syndrome exists — the math genuinely supports working one more year. The key is knowing when "enough is enough" — using the retirement calculator to verify you've actually crossed the finish line rather than continuing to work out of anxiety rather than necessity.
Now that you have your retirement corpus projection and monthly income estimate, here's a concrete action plan based on what the numbers show:
The retirement calculator works best as part of a complete planning toolkit. Use the Coast FIRE Calculator to set an achievable interim milestone. Use the FIRE Calculator to establish your ultimate target. Use the Investment Calculator to model specific scenarios. Use the SWR Calculator to verify your retirement income is sustainable. Together, these five calculators give you complete visibility from today's starting point through a 30-year retirement. Revisit them annually — or whenever your life situation changes significantly — to keep your plan current and actionable. Financial independence isn't a single destination; it's a journey, and these tools are your navigation system.
Financial independence is built on timeless mathematical principles, not market timing or complex strategies. The investors who achieve it consistently apply these fundamentals over long periods:
Spend less than you earn — always. This sounds obvious but is violated constantly. Lifestyle inflation — automatically upgrading your lifestyle with every income increase — is the primary wealth killer. Channel income increases into investments before the money finds its way to spending.
Invest early and consistently. The compound interest calculator shows what happens to $500/month invested over 40 years vs 20 years — the gap is staggering. Every month of delay costs you months at the other end of the timeline.
Minimize fees, taxes, and friction. A 1% expense ratio difference, a poor withdrawal sequence, or failure to capture employer matches can cost hundreds of thousands over a career. These aren't dramatic decisions — they're administrative choices that compound over decades.
Stay the course through volatility. Market downturns are temporary. Panic selling is permanent. The investors who held through the 2008–2009 crash, 2020 pandemic crash, and every correction in between are far wealthier than those who sold and waited for the "right time" to reinvest.
Increase your income alongside optimizing expenses. Both sides of the equation matter. A $20,000 salary increase invested at 7% for 25 years adds over $1 million to a retirement portfolio. Don't just cut lattes — develop skills that command premium compensation.
The calculators on this site — Coast FIRE, FIRE, Retirement, Investment, and SWR — give you the mathematical framework to quantify your progress against these principles. Use them regularly, update your inputs as life changes, and let the numbers guide your most important financial decisions. The path to financial independence is clear. The tools to navigate it are here. The only remaining ingredient is consistent action.
Start now: Every calculator on CoastFIRE.org is free, requires no signup, and runs entirely in your browser. Try the Coast FIRE Calculator first — most people are surprised to discover their retirement milestone is much closer than they expected. Your financial independence journey starts with knowing your number.
Financial independence is not reserved for the wealthy, the lucky, or those with perfect timing. It is the mathematically predictable outcome of consistent saving, smart investing, and long-term thinking. The numbers in these calculators are not hypothetical — they represent what compound interest reliably delivers to anyone who invests consistently over time.
Whether you are just starting with your first paycheck investment, rebuilding after a financial setback, or in the final years of accumulation, the principles are the same: know your target, invest consistently toward it, minimize costs and taxes, and let time do the compounding work that no active trading strategy can replicate.
The Coast FIRE Calculator, FIRE Calculator, Retirement Calculator, Investment Calculator, and SWR Calculator together give you a complete analytical toolkit for every phase of your financial independence journey. Use them together, revisit them annually, share them with family members who deserve this knowledge, and build the plan that turns today's savings into tomorrow's freedom.