The rule for the house affordability calculator is the 28/36 rule. This rule suggests that:
 

1. 28% of Gross Monthly Income: Your mortgage payment (including principal, interest, property taxes, and insurance) should not exceed 28% of your gross monthly income.

2. 36% of Gross Monthly Income: Your total debt payments (including your mortgage, car loans, student loans, credit card payments, etc.) should not exceed 36% of your gross monthly income.

By following these guidelines, you can ensure that your home loan is affordable and that you can manage your other financial obligations comfortably

Home loan affordability is calculated by considering your monthly income, expenses, and other financial commitments.  The calculator uses these details to determine the loan amount you can borrow.

To improve Home Loan affordability, you can increase your gross monthly income, reduce your expenses, pay off existing debts, and maintain a good credit score. These steps will help you qualify for a higher loan amount.