.swr-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 800px;
margin: 0 auto;
padding: 20px;
background-color: #f9f9f9;
border: 1px solid #e0e0e0;
border-radius: 8px;
}
.swr-header {
text-align: center;
margin-bottom: 30px;
}
.swr-header h2 {
color: #2c3e50;
margin-bottom: 10px;
}
.swr-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
}
@media (max-width: 600px) {
.swr-grid {
grid-template-columns: 1fr;
}
}
.swr-input-group {
margin-bottom: 15px;
}
.swr-input-group label {
display: block;
font-weight: 600;
margin-bottom: 5px;
color: #34495e;
}
.swr-input-group input {
width: 100%;
padding: 10px;
border: 1px solid #bdc3c7;
border-radius: 4px;
font-size: 16px;
box-sizing: border-box; /* Ensure padding doesn't affect width */
}
.swr-input-group input:focus {
border-color: #3498db;
outline: none;
}
.swr-btn-container {
text-align: center;
margin-top: 20px;
grid-column: 1 / -1;
}
.swr-calculate-btn {
background-color: #27ae60;
color: white;
border: none;
padding: 12px 30px;
font-size: 18px;
border-radius: 5px;
cursor: pointer;
transition: background-color 0.3s;
}
.swr-calculate-btn:hover {
background-color: #219150;
}
.swr-results {
margin-top: 30px;
padding: 20px;
background-color: #fff;
border-left: 5px solid #27ae60;
border-radius: 4px;
box-shadow: 0 2px 5px rgba(0,0,0,0.05);
display: none;
}
.swr-result-item {
margin-bottom: 15px;
border-bottom: 1px solid #eee;
padding-bottom: 10px;
}
.swr-result-item:last-child {
border-bottom: none;
}
.swr-result-label {
font-weight: 600;
color: #7f8c8d;
}
.swr-result-value {
font-size: 24px;
color: #2c3e50;
font-weight: bold;
float: right;
}
.swr-status-safe { color: #27ae60; }
.swr-status-warning { color: #f39c12; }
.swr-status-danger { color: #c0392b; }
.article-content {
max-width: 800px;
margin: 40px auto;
font-family: 'Georgia', serif;
line-height: 1.6;
color: #333;
}
.article-content h2 {
font-family: 'Segoe UI', sans-serif;
color: #2c3e50;
margin-top: 30px;
}
.article-content ul {
margin-bottom: 20px;
}
.article-content li {
margin-bottom: 10px;
}
function calculateWithdrawalRate() {
// 1. Get Input Values by ID
var portfolioVal = parseFloat(document.getElementById('portfolioValue').value);
var annualSpend = parseFloat(document.getElementById('annualSpending').value);
var roi = parseFloat(document.getElementById('annualReturn').value);
var inflation = parseFloat(document.getElementById('inflationRate').value);
// 2. Validate Inputs
if (isNaN(portfolioVal) || isNaN(annualSpend) || portfolioVal <= 0 || annualSpend 0 && years 0) {
// Apply growth to remainder
currentBalance += (currentBalance * roiDecimal);
// Adjust spending for inflation for next year
currentSpending += (currentSpending * infDecimal);
years++;
} else {
// Ran out this year
break;
}
// If balance is growing faster than withdrawal + inflation significantly, assume indefinite
if (currentBalance > portfolioVal * 5) {
infinite = true;
break;
}
}
// 5. Determine Safety Status (Based on 4% Rule Benchmark)
var statusText = "";
var statusClass = "";
if (currentRate <= 3.5) {
statusText = "Very Safe (Conservative)";
statusClass = "swr-status-safe";
} else if (currentRate <= 4.0) {
statusText = "Safe (Standard 4% Rule)";
statusClass = "swr-status-safe";
} else if (currentRate <= 5.0) {
statusText = "Moderate Risk";
statusClass = "swr-status-warning";
} else {
statusText = "High Risk (Depletion Likely)";
statusClass = "swr-status-danger";
}
// 6. Update Output Elements
var displayYears = infinite ? "Indefinite (Forever)" : years + " Years";
if (!infinite && years === maxYears) displayYears = "100+ Years";
document.getElementById('resultRate').innerHTML = currentRate.toFixed(2) + "%";
document.getElementById('resultStatus').innerHTML = statusText;
document.getElementById('resultStatus').className = "swr-result-value " + statusClass;
document.getElementById('resultLongevity').innerHTML = displayYears;
// Show results div
document.getElementById('swrResults').style.display = 'block';
}
How Do You Calculate Withdrawal Rate?
Calculating your withdrawal rate is one of the most critical steps in retirement planning. It determines the percentage of your total investment portfolio you withdraw annually to cover living expenses. Understanding this metric helps ensure that you do not outlive your savings.
The Core Formula
The math behind the withdrawal rate is straightforward. You divide your annual withdrawal amount by your total portfolio value and multiply by 100 to get a percentage:
Withdrawal Rate = (Annual Spending ÷ Total Portfolio Value) × 100
For example, if you have a portfolio of $1,000,000 and you plan to spend $40,000 per year, your withdrawal rate is 4%.
What is a Safe Withdrawal Rate?
Financial experts often cite the 4% Rule (derived from the Trinity Study) as a safe baseline. This rule suggests that withdrawing 4% of your portfolio in the first year of retirement, and adjusting that dollar amount for inflation in subsequent years, offers a high probability that your money will last for at least 30 years.
However, your specific "safe" rate depends on several factors:
- Asset Allocation: A portfolio with higher stock exposure typically supports a higher withdrawal rate but comes with more volatility.
- Time Horizon: Early retirees (FIRE movement) often target a lower rate, such as 3% or 3.5%, to ensure funds last for 50+ years.
- Market Valuations: Retiring during a market peak may require a more conservative withdrawal rate (Sequence of Returns Risk).
How to Use This Calculator
To use the tool above effectively, follow these steps:
- Total Portfolio Value: Enter the current total value of your liquid investable assets (stocks, bonds, cash). Do not include the value of your primary residence unless you plan to sell it.
- Annual Withdrawal: Enter your expected yearly expenses that must be covered by this portfolio. Subtract any other income sources like Social Security or pensions from your total expenses before entering this number.
- Expected Return & Inflation: These inputs help project how long your money will last. A standard conservative estimate is a 5-7% return and 3% inflation.
Interpreting the Results
If your calculation results in a rate significantly higher than 4-5%, you may be at risk of depleting your portfolio prematurely. Conversely, a rate below 3.5% is generally considered extremely safe, potentially allowing you to spend more or retire sooner.