Retirement Savings Calculator
Project how much you could accumulate by retirement using compound interest. Choose your currency (USD, EUR, GBP, and 17+ more) and enter your current age, savings, monthly contributions, expected investment returns, and employer match to see year-by-year projections. Results include inflation-adjusted values and an estimated monthly retirement income based on the 4% safe withdrawal rule.
Example: Retirement Projection from Age 30
Total at Retirement
$1,933,978.16
Inflation Adjusted
$814,922.44
Monthly Income (4%)
$2,716.41
Investment Gains
$1,568,978.16
With $50,000 starting savings, $500/month contribution, and 7% return, projected retirement balance at age 65 is $1,933,978.16(about $814,922.44 in today's dollars), supporting roughly $2,716.41/month under a 4% withdrawal estimate.
Source: FinCalc server-rendered example using the same formulas as the interactive calculator.
Your Details
Assumptions
Employer Match
Projections
By age 65, these defaults project about $1,933,978.16 saved ($814,922.44 in today's money), supporting roughly $2,716.41 per month at a 4% withdrawal rate.
Total at Retirement
$1,933,978.16
Inflation-Adjusted
$814,922.44
In today's value
Monthly Income (4% rule)
$2,716.41
Inflation-adjusted
Your Contributions
$210,000
Employer Contributions
$105,000
Investment Gains
$1,568,978.16
Year-by-Year Projection
| Age | Balance | Real Value |
|---|---|---|
| 30 | $62,963.16 | $61,427.47 |
| 31 | $76,863.43 | $73,159.72 |
| 32 | $91,768.55 | $85,216.22 |
| 33 | $107,751.16 | $97,617.23 |
| 34 | $124,889.16 | $110,383.82 |
| 35 | $143,266.06 | $123,537.88 |
| 36 | $162,971.43 | $137,102.20 |
| 37 | $184,101.31 | $151,100.52 |
| 38 | $206,758.66 | $165,557.53 |
| 39 | $231,053.92 | $180,498.95 |
| 40 | $257,105.48 | $195,951.60 |
| 41 | $285,040.32 | $211,943.40 |
| 42 | $314,994.56 | $228,503.47 |
| 43 | $347,114.20 | $245,662.16 |
| 44 | $381,555.77 | $263,451.12 |
| 45 | $418,487.12 | $281,903.36 |
| 46 | $458,088.25 | $301,053.33 |
| 47 | $500,552.14 | $320,936.97 |
| 48 | $546,085.75 | $341,591.77 |
| 49 | $594,910.99 | $363,056.89 |
| 50 | $647,265.81 | $385,373.19 |
| 51 | $703,405.37 | $408,583.33 |
| 52 | $763,603.25 | $432,731.85 |
| 53 | $828,152.85 | $457,865.30 |
| 54 | $897,368.74 | $484,032.26 |
| 55 | $971,588.26 | $511,283.48 |
| 56 | $1,051,173.11 | $539,671.99 |
| 57 | $1,136,511.16 | $569,253.19 |
| 58 | $1,228,018.30 | $600,084.96 |
| 59 | $1,326,140.49 | $632,227.78 |
| 60 | $1,431,355.95 | $665,744.86 |
| 61 | $1,544,177.45 | $700,702.25 |
| 62 | $1,665,154.82 | $737,168.99 |
| 63 | $1,794,877.65 | $775,217.25 |
| 64 | $1,933,978.16 | $814,922.44 |
AI explains your result
FinCalc AI
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FinCalc AI
Suggested questions:
What's Next?
How This Calculator Works
Direct answer: retirement outcomes are most sensitive to contribution rate, investment return, and years invested. Time in market is typically the strongest lever after savings rate.
Source context: long-term retirement planning standards from pension regulators and central banks emphasize inflation-adjusted projections, not nominal balances alone.
Methodology and formulas
- Projection recurrence: end balance = (start balance + yearly contributions) * (1 + return rate).
- Inflation-adjusted value = nominal value / (1 + inflation)^years.
- Employer match follows configured percent and cap constraints per contribution.
- Estimated monthly income uses a 4% annual withdrawal assumption.
The retirement savings calculator uses the compound interest formula to project your investment growth over time. Each month, your contributions and employer match are added to the balance, and investment returns are applied to the total. The calculator shows both nominal values and inflation-adjusted (real) values so you can understand your actual purchasing power at retirement.
The 4% Rule
The monthly income estimate is based on the 4% rule (also called the Trinity Study), which suggests that withdrawing 4% of your portfolio annually provides sustainable income for a 30-year retirement. For example, a $1,000,000 portfolio would provide approximately $3,333 per month. The estimate shown uses your inflation-adjusted balance for a more realistic figure.
Example Scenario
Starting at age 30 with $50,000 in savings, contributing $500/month with a 50% employer match, at 7% annual returns and 2.5% inflation: by age 65 you could accumulate approximately $1.2 million (nominal) or about $650,000 in today's dollars. This would support an estimated $2,200/month in inflation-adjusted retirement income.
Assumptions and Limitations
- Returns are applied monthly at a constant rate (actual returns vary year to year)
- Contributions remain constant (not adjusted for inflation or salary increases)
- No taxes are calculated on withdrawals or investment gains
- The 4% rule is a guideline, not a guarantee
Sources
Data and assumptions align with official publications. For verification and current figures:
- U.S. Bureau of Labor Statistics — CPI, wage data, occupational statistics
- Social Security Administration — Benefits, claiming ages, COLA
Frequently asked questions
How much do I need to save for retirement?
A common guideline is to replace 70–80% of pre-retirement income. The 4% rule suggests you can withdraw 4% of your portfolio annually; so for $3,333/month ($40,000/year) you need about $1,000,000 saved. Our calculator shows how current savings plus monthly contributions and employer match can grow to a target by retirement age.
What is the 4% rule for retirement withdrawal?
The 4% rule (from the Trinity Study) suggests withdrawing 4% of your retirement portfolio in the first year, then adjusting for inflation. For example, a $1,000,000 portfolio would provide approximately $3,333 per month. Our calculator uses your projected inflation-adjusted balance to estimate sustainable monthly income. It is a guideline, not a guarantee — market returns and lifespan vary.
How does employer 401(k) match affect my retirement savings?
Employer match is free money that compounds over time. For example, contributing $500/month with a 50% match adds $250 from your employer — $750 total per month. Starting at 30 with $50,000 saved, that can mean roughly $200,000+ more at 65 compared to no match. Enter your match percentage and cap in the calculator to see the impact on your projections.
When should I start saving for retirement?
The earlier, the better: compound interest needs time. Starting at 30 with $50,000 and $500/month (50% match) at 7% returns can grow to about $1.2 million by 65. Starting the same plan at 40 yields significantly less. Even small amounts in your 20s or 30s have a large effect; use the calculator to compare starting ages.
How much will $500 a month grow by retirement?
At 7% annual returns over 35 years, $500/month alone grows to roughly $850,000 (nominal). With a 50% employer match ($750/month total) and $50,000 starting balance, you could reach about $1.2 million by 65 — or about $650,000 in today's dollars at 2.5% inflation, supporting an estimated $2,200/month with the 4% rule. Use the calculator for your age, match, and return assumptions.
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