Standard short rate is often 10% of the unearned premium.
Calculation Summary
Total Policy Duration:0 days
Days Policy was Active:0 days
Unearned Days:0 days
Pro-Rata Unearned Premium:$0.00
Short Rate Penalty Fee:$0.00
Estimated Short Rate Refund:$0.00
Understanding Short Rate Cancellation
When you cancel an insurance policy before its expiration date, the insurance company calculates the refund owed to you. There are two primary methods for this: Pro-Rata and Short Rate.
What is Short Rate?
A short rate cancellation is used when the policyholder initiates the cancellation. Unlike pro-rata, which returns the exact unused portion of the premium, a short rate cancellation allows the insurer to retain a higher percentage of the premium to cover administrative costs and the loss of expected revenue. This "penalty" is typically 10% of the unearned premium.
Short Rate vs. Pro-Rata
Pro-rata is generally used when the insurance company cancels the policy. In this scenario, if 50% of the term remains, you get 50% of your money back. In a short rate scenario, if 50% of the term remains, the insurer might take 10% of that remaining amount as a fee, meaning you would only receive 45% of the total premium back.
How to use this Calculator
To determine your potential refund, follow these steps:
Total Policy Premium: Enter the full amount paid for the policy term.
Effective Date: The day your policy started.
Cancellation Date: The day you wish the coverage to end.
Expiration Date: The original end date listed on your policy declarations page.
Short Rate Penalty: While 10% is standard for many commercial and personal lines, check your policy language for specific "Short Rate Tables."
Example Calculation
If you have a 1-year policy costing $1,200 and you cancel exactly halfway through (182.5 days):
Pro-Rata Unearned: $600.00
Short Rate Penalty (10% of $600): $60.00
Final Refund: $540.00
In this example, the insurance company keeps an extra $60 compared to a standard pro-rata calculation.
function calculateShortRate() {
var premium = parseFloat(document.getElementById('srcPremium').value);
var start = new Date(document.getElementById('srcStartDate').value);
var cancel = new Date(document.getElementById('srcCancelDate').value);
var end = new Date(document.getElementById('srcEndDate').value);
var penaltyPercent = parseFloat(document.getElementById('srcPenalty').value);
var errorDiv = document.getElementById('srcError');
var resultDiv = document.getElementById('srcResult');
errorDiv.style.display = 'none';
resultDiv.style.display = 'none';
// Validation
if (isNaN(premium) || premium <= 0) {
showError("Please enter a valid premium amount.");
return;
}
if (isNaN(start.getTime()) || isNaN(cancel.getTime()) || isNaN(end.getTime())) {
showError("Please enter valid dates for all fields.");
return;
}
if (cancel end) {
showError("Cancellation date cannot be after the policy expiration date.");
return;
}
if (end <= start) {
showError("Expiration date must be after the effective date.");
return;
}
if (isNaN(penaltyPercent) || penaltyPercent < 0) {
showError("Please enter a valid penalty percentage.");
return;
}
// Calculations
var totalTime = end.getTime() – start.getTime();
var elapsedTime = cancel.getTime() – start.getTime();
var totalDays = Math.ceil(totalTime / (1000 * 3600 * 24));
var elapsedDays = Math.ceil(elapsedTime / (1000 * 3600 * 24));
var remainingDays = totalDays – elapsedDays;
if (remainingDays < 0) remainingDays = 0;
var proRataRefund = (remainingDays / totalDays) * premium;
var penaltyAmt = proRataRefund * (penaltyPercent / 100);
var shortRateRefund = proRataRefund – penaltyAmt;
// Display
document.getElementById('resTotalDays').innerText = totalDays + " days";
document.getElementById('resElapsedDays').innerText = elapsedDays + " days";
document.getElementById('resRemainingDays').innerText = remainingDays + " days";
document.getElementById('resProRata').innerText = "$" + proRataRefund.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resPenaltyAmt').innerText = "$" + penaltyAmt.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resFinalRefund').innerText = "$" + shortRateRefund.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
resultDiv.style.display = 'block';
}
function showError(msg) {
var errorDiv = document.getElementById('srcError');
errorDiv.innerText = msg;
errorDiv.style.display = 'block';
}