Pool Fill Cost Calculator

.afford-calc-container { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; max-width: 800px; margin: 20px auto; padding: 25px; border: 1px solid #e1e4e8; border-radius: 12px; background-color: #ffffff; color: #333; box-shadow: 0 4px 12px rgba(0,0,0,0.05); } .afford-calc-header { text-align: center; margin-bottom: 25px; } .afford-calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } @media (max-width: 600px) { .afford-calc-grid { grid-template-columns: 1fr; } } .afford-input-group { margin-bottom: 15px; } .afford-input-group label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 14px; } .afford-input-group input { width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 6px; box-sizing: border-box; font-size: 16px; } .afford-btn { background-color: #0056b3; color: white; padding: 15px 20px; border: none; border-radius: 6px; cursor: pointer; width: 100%; font-size: 18px; font-weight: bold; margin-top: 10px; transition: background-color 0.2s; } .afford-btn:hover { background-color: #004494; } .afford-result { margin-top: 30px; padding: 20px; background-color: #f8f9fa; border-radius: 8px; text-align: center; display: none; } .afford-result h3 { margin-top: 0; color: #0056b3; font-size: 24px; } .afford-price { font-size: 32px; font-weight: 800; color: #28a745; margin: 10px 0; } .afford-breakdown { font-size: 14px; color: #666; line-height: 1.6; } .afford-content { margin-top: 40px; line-height: 1.6; } .afford-content h2 { color: #222; border-bottom: 2px solid #0056b3; padding-bottom: 10px; } .afford-content h3 { color: #444; margin-top: 25px; }

Home Affordability Calculator

Estimate your maximum purchase price based on your income and debts.

Estimated Max Home Price

Estimated Monthly Payment:

Calculated using a 36% Debt-to-Income (DTI) ratio limit.

How Much House Can I Afford?

Determining your home buying budget is the most critical step in the real estate journey. While a bank might pre-approve you for a high amount, understanding the math behind affordability ensures you don't become "house poor."

The 28/36 Rule Explained

Lenders typically use the 28/36 rule to determine your borrowing capacity:

  • 28% Limit: Your total monthly housing costs (mortgage, taxes, and insurance) should not exceed 28% of your gross monthly income.
  • 36% Limit: Your total debt obligations (housing plus car loans, student loans, and credit cards) should not exceed 36% of your gross monthly income.

Key Factors Impacting Affordability

1. Gross Income: Your total earnings before taxes are the foundation of your mortgage eligibility.

2. Debt-to-Income (DTI) Ratio: High existing debts reduce the amount a lender will give you for a mortgage.

3. Down Payment: The more you put down, the lower your monthly payment and interest costs will be.

4. Interest Rates: Even a 1% difference in interest rates can swing your buying power by tens of thousands of dollars.

Example Scenario

If a household earns $100,000 annually ($8,333/month) and has $400 in monthly car payments, the 36% rule allows for a total debt of $3,000. Subtracting the $400 car payment leaves $2,600 available for the monthly mortgage, taxes, and insurance.

function calculateAffordability() { var annualIncome = parseFloat(document.getElementById('annualIncome').value); var downPayment = parseFloat(document.getElementById('downPayment').value) || 0; var monthlyDebt = parseFloat(document.getElementById('monthlyDebt').value) || 0; var annualRate = parseFloat(document.getElementById('interestRate').value); var loanTerm = parseFloat(document.getElementById('loanTerm').value); var taxRate = parseFloat(document.getElementById('propertyTax').value) / 100; if (!annualIncome || !annualRate || !loanTerm) { alert("Please enter income, interest rate, and loan term."); return; } var monthlyGrossIncome = annualIncome / 12; var monthlyInterest = annualRate / 100 / 12; var totalPayments = loanTerm * 12; // Rule of 36% DTI for total debt var maxTotalMonthlyDebt = monthlyGrossIncome * 0.36; var availableForHousing = maxTotalMonthlyDebt – monthlyDebt; // We must account for Taxes and Insurance (PITI) // Roughly, let's assume 75% of the available housing budget goes to Principal/Interest // and 25% goes to Taxes/Insurance (this varies by location) // To be more precise: Monthly Payment M = (Loan * i(1+i)^n) / ((1+i)^n – 1) // And Property Tax/Insurance is (Price * taxRate) / 12 // We solve for Price where (Monthly P&I) + (Price * taxRate / 12) = availableForHousing // Loan = Price – DownPayment var monthlyTaxFactor = taxRate / 12; var denom = (monthlyInterest * Math.pow(1 + monthlyInterest, totalPayments)) / (Math.pow(1 + monthlyInterest, totalPayments) – 1); // Algebra: [ (Price – DownPayment) * denom ] + [ Price * monthlyTaxFactor ] = availableForHousing // Price * denom – DownPayment * denom + Price * monthlyTaxFactor = availableForHousing // Price * (denom + monthlyTaxFactor) = availableForHousing + (DownPayment * denom) var maxHomePrice = (availableForHousing + (downPayment * denom)) / (denom + monthlyTaxFactor); if (maxHomePrice < downPayment) { maxHomePrice = downPayment; } var loanAmount = maxHomePrice – downPayment; var monthlyPI = loanAmount * denom; var actualMonthlyPayment = monthlyPI + (maxHomePrice * monthlyTaxFactor); document.getElementById('affordResult').style.display = 'block'; document.getElementById('maxPriceDisplay').innerText = '$' + Math.round(maxHomePrice).toLocaleString(); document.getElementById('monthlyPaymentDisplay').innerText = '$' + Math.round(actualMonthlyPayment).toLocaleString(); }

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