.retirement-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 700px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 10px;
background-color: #f9f9f9;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.retirement-calculator-container h2 {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 1.8em;
}
.retirement-calculator-container .input-group {
margin-bottom: 18px;
display: flex;
flex-direction: column;
}
.retirement-calculator-container label {
margin-bottom: 8px;
font-weight: bold;
color: #34495e;
font-size: 0.95em;
}
.retirement-calculator-container input[type="number"] {
width: calc(100% – 20px);
padding: 12px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 1em;
box-sizing: border-box;
transition: border-color 0.3s ease;
}
.retirement-calculator-container input[type="number"]:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 5px rgba(0, 123, 255, 0.3);
}
.retirement-calculator-container button {
display: block;
width: 100%;
padding: 14px 20px;
background-color: #28a745;
color: white;
border: none;
border-radius: 6px;
font-size: 1.1em;
font-weight: bold;
cursor: pointer;
margin-top: 25px;
transition: background-color 0.3s ease, transform 0.2s ease;
}
.retirement-calculator-container button:hover {
background-color: #218838;
transform: translateY(-2px);
}
.retirement-calculator-container .result-section {
margin-top: 30px;
padding: 20px;
border-top: 2px solid #eee;
background-color: #e9f7ef;
border-radius: 8px;
box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}
.retirement-calculator-container .result-section h3 {
color: #2c3e50;
margin-bottom: 15px;
font-size: 1.5em;
text-align: center;
}
.retirement-calculator-container .result-item {
display: flex;
justify-content: space-between;
padding: 8px 0;
border-bottom: 1px dashed #d0d0d0;
font-size: 1em;
color: #333;
}
.retirement-calculator-container .result-item:last-child {
border-bottom: none;
}
.retirement-calculator-container .result-label {
font-weight: bold;
color: #4a4a4a;
}
.retirement-calculator-container .result-value {
color: #007bff;
font-weight: 600;
}
.retirement-calculator-container .result-value.positive {
color: #28a745;
}
.retirement-calculator-container .result-value.negative {
color: #dc3545;
}
.retirement-calculator-container .error-message {
color: #dc3545;
margin-top: 15px;
text-align: center;
font-weight: bold;
}
.retirement-calculator-container .info-text {
font-size: 0.85em;
color: #666;
margin-top: 5px;
line-height: 1.4;
}
function calculateRetirement() {
var currentAge = parseFloat(document.getElementById('currentAge').value);
var desiredRetirementAge = parseFloat(document.getElementById('desiredRetirementAge').value);
var lifeExpectancy = parseFloat(document.getElementById('lifeExpectancy').value);
var currentSavings = parseFloat(document.getElementById('currentSavings').value);
var annualContribution = parseFloat(document.getElementById('annualContribution').value);
var desiredAnnualIncome = parseFloat(document.getElementById('desiredAnnualIncome').value);
var annualReturnPre = parseFloat(document.getElementById('annualReturnPre').value) / 100;
var annualReturnPost = parseFloat(document.getElementById('annualReturnPost').value) / 100;
var inflationRate = parseFloat(document.getElementById('inflationRate').value) / 100;
var errorMessageDiv = document.getElementById('errorMessage');
var retirementResultDiv = document.getElementById('retirementResult');
errorMessageDiv.style.display = 'none';
retirementResultDiv.style.display = 'none';
// Input validation
if (isNaN(currentAge) || isNaN(desiredRetirementAge) || isNaN(lifeExpectancy) ||
isNaN(currentSavings) || isNaN(annualContribution) || isNaN(desiredAnnualIncome) ||
isNaN(annualReturnPre) || isNaN(annualReturnPost) || isNaN(inflationRate)) {
errorMessageDiv.textContent = 'Please enter valid numbers for all fields.';
errorMessageDiv.style.display = 'block';
return;
}
if (currentAge <= 0 || desiredRetirementAge <= 0 || lifeExpectancy <= 0 ||
currentSavings < 0 || annualContribution < 0 || desiredAnnualIncome <= 0 ||
annualReturnPre < 0 || annualReturnPost < 0 || inflationRate < 0) {
errorMessageDiv.textContent = 'Please enter positive values for all fields, and non-negative for savings/contributions.';
errorMessageDiv.style.display = 'block';
return;
}
if (desiredRetirementAge <= currentAge) {
errorMessageDiv.textContent = 'Desired Retirement Age must be greater than Current Age.';
errorMessageDiv.style.display = 'block';
return;
}
if (lifeExpectancy 0) {
fvAnnualContributions = annualContribution * ((Math.pow((1 + annualReturnPre), yearsToRetirement) – 1) / annualReturnPre);
} else { // If annualReturnPre is 0, it's simply contributions * years
fvAnnualContributions = annualContribution * yearsToRetirement;
}
// 3. Total Savings at Retirement
var totalSavingsAtRetirement = fvCurrentSavings + fvAnnualContributions;
// 4. Inflation-Adjusted Desired Annual Income
var inflationAdjustedIncome = desiredAnnualIncome * Math.pow((1 + inflationRate), yearsToRetirement);
// 5. Required Nest Egg at Retirement (Present Value of an Annuity)
var requiredNestEgg = 0;
if (annualReturnPost > 0) {
requiredNestEgg = inflationAdjustedIncome * ((1 – Math.pow((1 + annualReturnPost), -yearsInRetirement)) / annualReturnPost);
} else { // If annualReturnPost is 0, it's simply income * years
requiredNestEgg = inflationAdjustedIncome * yearsInRetirement;
}
// 6. Savings Gap/Surplus
var savingsGapSurplus = totalSavingsAtRetirement – requiredNestEgg;
// Display Results
document.getElementById('yearsUntilRetirementResult').textContent = yearsToRetirement.toFixed(0) + " years";
document.getElementById('totalSavingsAtRetirementResult').textContent = "$" + totalSavingsAtRetirement.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('inflationAdjustedIncomeResult').textContent = "$" + inflationAdjustedIncome.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
document.getElementById('requiredNestEggResult').textContent = "$" + requiredNestEgg.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
var savingsGapSurplusElement = document.getElementById('savingsGapSurplusResult');
savingsGapSurplusElement.textContent = "$" + Math.abs(savingsGapSurplus).toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 });
if (savingsGapSurplus >= 0) {
savingsGapSurplusElement.classList.remove('negative');
savingsGapSurplusElement.classList.add('positive');
} else {
savingsGapSurplusElement.classList.remove('positive');
savingsGapSurplusElement.classList.add('negative');
}
var conclusionText = "";
var conclusionElement = document.getElementById('conclusionResult');
conclusionElement.classList.remove('positive', 'negative');
if (savingsGapSurplus >= 0) {
conclusionText = "Congratulations! You are on track to meet or exceed your retirement goals.";
conclusionElement.classList.add('positive');
// Calculate how much more annual income they could withdraw
var maxAnnualIncome = 0;
if (annualReturnPost > 0) {
maxAnnualIncome = totalSavingsAtRetirement * annualReturnPost / (1 – Math.pow((1 + annualReturnPost), -yearsInRetirement));
} else {
maxAnnualIncome = totalSavingsAtRetirement / yearsInRetirement;
}
conclusionText += " With your current plan, you could potentially withdraw up to $" + maxAnnualIncome.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 }) + " annually (inflation-adjusted) during retirement.";
} else {
conclusionText = "You have a shortfall in your retirement savings.";
conclusionElement.classList.add('negative');
// Calculate how many years the funds will last
var yearsFundsLast = 0;
if (annualReturnPost > 0 && totalSavingsAtRetirement * annualReturnPost / inflationAdjustedIncome 0) {
conclusionText += " Based on your current plan, your savings would last approximately " + yearsFundsLast.toFixed(1) + " years, falling short of your " + yearsInRetirement + " year retirement period.";
conclusionText += " Consider increasing contributions, working longer, or adjusting your desired retirement income.";
} else {
conclusionText += " Your savings are insufficient to provide any income at your desired level.";
}
}
document.getElementById('conclusionResult').textContent = conclusionText;
retirementResultDiv.style.display = 'block';
}
Retirement Planning Calculator
Your current age in years.
The age you plan to retire.
How long you expect to live, determining your retirement withdrawal period.
The total amount you currently have saved for retirement.
The amount you contribute to your retirement savings each year.
The annual income you'd like to have in retirement, expressed in today's dollars.
Your expected average annual investment return before retirement.
Your expected average annual investment return during retirement (withdrawal phase).
The average annual inflation rate you expect, used to adjust your desired income.
Your Retirement Outlook
Years Until Retirement:
Total Savings at Retirement:
Inflation-Adjusted Desired Annual Income:
Required Nest Egg at Retirement:
Savings Gap/Surplus:
Conclusion:
Understanding Your Retirement Plan
Planning for retirement is one of the most crucial financial steps you'll take. This calculator helps you visualize your financial future by estimating how much you'll have saved and if it's enough to cover your desired lifestyle in retirement. It takes into account various factors like your current savings, future contributions, investment returns, and the impact of inflation.
How the Calculator Works:
The calculator uses several key financial principles to project your retirement savings and needs:
- Future Value of Current Savings: It projects how much your existing savings will grow by your retirement age, assuming a consistent annual return.
- Future Value of Annual Contributions: It calculates the total value of your regular yearly contributions, compounded over the years until retirement.
- Inflation Adjustment: Your desired annual retirement income is adjusted for inflation to reflect its purchasing power at your retirement age. This ensures you're planning for a realistic future cost of living.
- Required Nest Egg: This is the total amount of money you'll need at the start of your retirement to provide your inflation-adjusted desired income for your expected years in retirement, considering your post-retirement investment returns. This is calculated using the present value of an annuity formula.
- Savings Gap/Surplus: By comparing your projected total savings at retirement with your required nest egg, the calculator determines if you're on track, or if you need to make adjustments.
Key Input Definitions:
- Current Age: Your age today.
- Desired Retirement Age: The age you plan to stop working. This determines your accumulation period.
- Expected Life Expectancy: How many years you anticipate living after retirement. This defines your withdrawal period.
- Current Retirement Savings ($): The total amount you have already accumulated in retirement accounts (e.g., 401k, IRA).
- Annual Savings Contribution ($): The amount you plan to save for retirement each year. Consistency is key here!
- Desired Annual Retirement Income (Today's $): The yearly income you believe you'll need in retirement, expressed in today's purchasing power. The calculator will adjust this for inflation.
- Expected Annual Return on Investments (Pre-Retirement, %): The average annual growth rate you expect your investments to achieve before you retire. This is crucial for compounding.
- Expected Annual Return on Investments (Post-Retirement, %): The average annual growth rate you expect your investments to achieve during your retirement years, while you are withdrawing funds. This is often a more conservative estimate than pre-retirement.
- Expected Annual Inflation Rate (%): The average rate at which prices are expected to rise each year. Inflation erodes purchasing power, so accounting for it is vital.
Interpreting Your Results:
The calculator will provide you with a clear picture:
- Total Savings at Retirement: The estimated lump sum you'll have when you retire.
- Inflation-Adjusted Desired Annual Income: What your desired income will actually need to be in future dollars to maintain today's purchasing power.
- Required Nest Egg at Retirement: The target amount you need to hit to fund your desired retirement lifestyle.
- Savings Gap/Surplus: This is the most critical number. A positive number means you're on track or even ahead. A negative number indicates a shortfall, prompting you to consider adjustments.
- Conclusion: A summary of your situation, including how long your funds might last if there's a shortfall, or how much more you could potentially withdraw if you have a surplus.
What to do if there's a shortfall:
Don't be discouraged by a shortfall! This calculator is a planning tool. Here are some strategies to improve your outlook:
- Increase Annual Contributions: Even small, consistent increases can make a big difference over time due to compounding.
- Work Longer: Delaying retirement by a few years can significantly boost your savings and reduce the number of years you need to fund.
- Adjust Desired Retirement Income: Re-evaluate your retirement lifestyle. Can you live comfortably on a slightly lower income?
- Seek Higher Returns (with caution): Consider adjusting your investment strategy, but always balance potential returns with your risk tolerance.
- Reduce Expenses: Free up more money to save by cutting unnecessary costs.
Remember, this calculator provides estimates. For personalized advice, consult with a qualified financial advisor.