.furniture-calculator-wrapper {
max-width: 800px;
margin: 0 auto;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
color: #333;
line-height: 1.6;
}
.calc-box {
background: #fdfdfd;
border: 1px solid #e0e0e0;
border-radius: 8px;
padding: 30px;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
margin-bottom: 40px;
}
.calc-title {
text-align: center;
color: #2c3e50;
margin-bottom: 25px;
font-size: 24px;
font-weight: 700;
}
.input-group {
margin-bottom: 20px;
}
.input-group label {
display: block;
margin-bottom: 8px;
font-weight: 600;
color: #4a5568;
}
.input-group input, .input-group select {
width: 100%;
padding: 12px;
border: 1px solid #cbd5e0;
border-radius: 6px;
font-size: 16px;
box-sizing: border-box;
transition: border-color 0.2s;
}
.input-group input:focus {
border-color: #4299e1;
outline: none;
box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
}
.calc-btn {
width: 100%;
background-color: #2b6cb0;
color: white;
padding: 14px;
border: none;
border-radius: 6px;
font-size: 18px;
font-weight: 600;
cursor: pointer;
transition: background-color 0.2s;
}
.calc-btn:hover {
background-color: #2c5282;
}
.results-box {
margin-top: 30px;
background-color: #ebf8ff;
border: 1px solid #bee3f8;
border-radius: 6px;
padding: 20px;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
margin-bottom: 12px;
padding-bottom: 12px;
border-bottom: 1px solid #bee3f8;
}
.result-row:last-child {
border-bottom: none;
margin-bottom: 0;
padding-bottom: 0;
}
.result-label {
font-weight: 600;
color: #2d3748;
}
.result-value {
font-weight: 700;
color: #2b6cb0;
font-size: 18px;
}
.calc-content h2 {
color: #2c3e50;
margin-top: 40px;
border-bottom: 2px solid #edf2f7;
padding-bottom: 10px;
}
.calc-content p {
margin-bottom: 15px;
}
.calc-content ul {
margin-bottom: 20px;
padding-left: 20px;
}
.calc-content li {
margin-bottom: 8px;
}
.error-msg {
color: #c53030;
text-align: center;
margin-top: 10px;
display: none;
font-weight: bold;
}
.info-tip {
font-size: 12px;
color: #718096;
margin-top: 4px;
}
function calculateFurnitureDepreciation() {
// Get DOM elements
var priceInput = document.getElementById('furnPurchasePrice');
var lifeInput = document.getElementById('furnUsefulLife');
var ageInput = document.getElementById('furnAge');
var salvageInput = document.getElementById('furnSalvageValue');
var errorDiv = document.getElementById('furnError');
var resultDiv = document.getElementById('furnResults');
// Parse values
var price = parseFloat(priceInput.value);
var life = parseFloat(lifeInput.value);
var age = parseFloat(ageInput.value);
var salvage = parseFloat(salvageInput.value);
// Validation
if (isNaN(price) || isNaN(life) || isNaN(age) || price < 0 || life <= 0 || age < 0) {
errorDiv.style.display = 'block';
resultDiv.style.display = 'none';
return;
}
if (isNaN(salvage) || salvage < 0) {
salvage = 0;
}
// Reset error
errorDiv.style.display = 'none';
// Straight-Line Depreciation Logic
var depreciableCost = price – salvage;
// Ensure salvage isn't higher than price
if (depreciableCost depreciableCost) {
totalDepreciation = depreciableCost;
}
var currentValue = price – totalDepreciation;
var rate = (1 / life) * 100;
// Update UI
document.getElementById('resCurrentValue').innerText = '$' + currentValue.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resTotalDep').innerText = '$' + totalDepreciation.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resYearlyDep').innerText = '$' + yearlyDepreciation.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById('resRate').innerText = rate.toFixed(2) + '% / Year';
// Show results
resultDiv.style.display = 'block';
}
Furniture Depreciation Calculator
The original cost of the furniture including tax and delivery.
Standard tax life for office furniture is 7 years. Residential varies (5-10).
Estimated value at the end of its useful life (often $0).
Please enter valid positive numbers.
Current Book Value:
–
Total Depreciation:
–
Yearly Depreciation:
–
Depreciation Rate:
–
How to Calculate Furniture Depreciation
Understanding the value of your furniture over time is essential for insurance claims, tax deductions (for businesses), and resale pricing. This calculator uses the Straight-Line Depreciation method, which is the standard model used for accounting and insurance valuations.
The Formula
Straight-line depreciation spreads the cost of the furniture evenly over its useful life. The math works as follows:
- Depreciable Cost: Purchase Price – Salvage Value
- Annual Depreciation: Depreciable Cost / Useful Life
- Current Value: Purchase Price – (Annual Depreciation × Years Owned)
Key Terms Explained
- Purchase Price: The total amount paid for the item, including sales tax and delivery fees.
- Useful Life: The estimated number of years the furniture is expected to remain useful. For tax purposes (IRS MACRS), office furniture is typically depreciated over 7 years. Residential furniture usually has a lifespan of 5 to 10 years depending on quality.
- Salvage Value: The estimated resale value of the furniture at the very end of its life. For many accounting calculations, this is set to $0, but if you plan to sell it as vintage or used, estimate a conservative figure.
- Years Owned: The duration of time since you purchased the asset.
Common Furniture Lifespans
If you aren't sure what to input for "Useful Life," consider these industry standards:
- Solid Wood Tables/Chairs: 10–15 years
- Upholstered Sofas: 5–10 years (Leather typically lasts longer than fabric)
- Office Desks & Chairs: 7 years (Standard IRS guideline)
- Mattresses: 5–8 years
- Patio Furniture: 3–6 years
Why Calculate Depreciation?
Insurance Claims: If your home suffers damage (fire, flood, theft), insurance companies usually pay "Actual Cash Value" (ACV) rather than the replacement cost. ACV is essentially the depreciated value of your items.
Resale: If you are selling used furniture on marketplaces, calculating the depreciated value helps you set a fair price that attracts buyers while ensuring you don't undervalue your property.
Tax Deductions: For freelancers and business owners, depreciating office furniture is a common way to lower taxable income. Always consult a tax professional for specific business filings.