Lease Break Cost Calculator
ANA›Life Services Authority›National Calculator Authority›Lease Break Cost Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Lease Break Cost Calculator
Estimate the total financial cost of breaking a lease early, including break fees, ongoing rent liability, advertising, and reletting costs.
Monthly Rent ($)
Lease Start Date
Lease End Date
Intended Break Date
Fixed Break Fee (weeks of rent, 0 if none)
Estimated Weeks to Find New Tenant
Advertising / Reletting Fee ($)
Bond / Security Deposit Paid ($)
Calculate Break Cost
function leaCalc() { var resultDiv = document.getElementById('lea-result');
var monthlyRent = parseFloat(document.getElementById('lea-monthly-rent').value); var leaseStart = document.getElementById('lea-lease-start').value; var leaseEnd = document.getElementById('lea-lease-end').value; var breakDate = document.getElementById('lea-break-date').value; var breakFeeWeeks = parseFloat(document.getElementById('lea-break-fee-weeks').value) || 0; var reletWeeks = parseFloat(document.getElementById('lea-relet-weeks').value) || 0; var advertisingCost= parseFloat(document.getElementById('lea-advertising-cost').value) || 0; var bond = parseFloat(document.getElementById('lea-bond').value) || 0;
// --- Validation --- if (isNaN(monthlyRent) || monthlyRent Please enter a valid monthly rent.'; return; } if (!leaseStart || !leaseEnd || !breakDate) { resultDiv.innerHTML = 'Please enter lease start, end, and break dates.'; return; }
var startMs = new Date(leaseStart).getTime(); var endMs = new Date(leaseEnd).getTime(); var breakMs = new Date(breakDate).getTime();
if (isNaN(startMs) || isNaN(endMs) || isNaN(breakMs)) { resultDiv.innerHTML = 'One or more dates are invalid.'; return; } if (endMs Lease end date must be after lease start date.'; return; } if (breakMs Break date must be after lease start date.'; return; } if (breakMs >= endMs) { resultDiv.innerHTML = 'Break date must be before lease end date — no break cost applies if the lease has already ended.'; return; } if (breakFeeWeeks Break fee weeks cannot be negative.'; return; } if (reletWeeks Reletting weeks cannot be negative.'; return; }
// --- Core Calculations --- var weeklyRent = (monthlyRent * 12) / 52; var dailyRent = monthlyRent / 30.4375; // average days per month
// Total lease duration in days var totalLeaseDays = (endMs - startMs) / 86400000; // Days elapsed at break var elapsedDays = (breakMs - startMs) / 86400000; // Remaining days on lease after break var remainingDays = (endMs - breakMs) / 86400000; var remainingMonths = remainingDays / 30.4375; var remainingWeeks = remainingDays / 7;
// Proportion of lease remaining (used for proportional break fee models) var proportionRemaining = remainingDays / totalLeaseDays;
// 1. Fixed break fee (e.g. 6 weeks rent) var fixedBreakFee = breakFeeWeeks * weeklyRent;
// 2. Rent liability during vacancy (until new tenant found or lease ends, whichever is sooner) var vacancyWeeks = Math.min(reletWeeks, remainingWeeks); var rentLiability = vacancyWeeks * weeklyRent;
// 3. Advertising / reletting agent fee (passed in directly) // Already captured in advertisingCost
// 4. Total gross break cost var totalBreakCost = fixedBreakFee + rentLiability + advertisingCost;
// 5. Net cost after bond offset (bond may partially cover costs) var bondOffset = Math.min(bond, totalBreakCost); var netBreakCost = totalBreakCost - bondOffset;
// --- Format helpers --- function fmt(n) { return '$' + n.toFixed(2).replace(/\B(?=(\d{3})+(?!\d))/g, ','); } function fmtDays(d) { return Math.round(d) + ' day' + (Math.round(d) !== 1 ? 's' : ''); }
resultDiv.innerHTML = '### Break Cost Estimate ' + '' + 'Weekly Rent' + fmt(weeklyRent) + '' + 'Daily Rent' + fmt(dailyRent) + '' + 'Total Lease Duration' + fmtDays(totalLeaseDays) + '' + 'Days Elapsed at Break' + fmtDays(elapsedDays) + '' + 'Remaining Lease Days' + fmtDays(remainingDays) + ' (' + (proportionRemaining * 100).toFixed(1) + '% of lease)' + 'Fixed Break Fee (' + breakFeeWeeks.toFixed(1) + ' wks rent)' + fmt(fixedBreakFee) + '' + 'Rent Liability During Vacancy (' + vacancyWeeks.toFixed(1) + ' wks)' + fmt(rentLiability) + '' + 'Advertising / Reletting Fee' + fmt(advertisingCost) + '' + 'Total Gross Break Cost' + fmt(totalBreakCost) + '' + 'Bond Offset (applied to costs)− ' + fmt(bondOffset) + '' + 'Estimated Net Out-of-Pocket Cost' + fmt(netBreakCost) + '' + ''; }
#### Formulas Used
Weekly Rent = (Monthly Rent × 12) ÷ 52
Daily Rent = Monthly Rent ÷ 30.4375
Remaining Lease Days = Lease End Date − Break Date
Proportion Remaining = Remaining Days ÷ Total Lease Days
Fixed Break Fee = Break Fee Weeks × Weekly Rent
Rent Liability = min(Relet Weeks, Remaining Weeks) × Weekly Rent
Total Gross Break Cost = Fixed Break Fee + Rent Liability + Advertising Cost
Net Break Cost = Total Gross Break Cost − min(Bond, Total Gross Break Cost)
#### Assumptions & References
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