This is the total amount of money you make in a year, after any taxes are taken out.
This is how much you’re spending every month on ongoing expenses such as groceries, credit card bills, student loans, etc. Once you enter these two amounts, the Home Affordability Calculator will generate a recommended estimate of what you can afford for your monthly mortgage payment.
A debt-to-income (DTI) ratio compares a person’s or household’s total monthly debt payments to their gross monthly income. It’s often used by lenders to assess a borrower’s ability to manage additional debt and make loan payments. The DTI ratio is expressed as a percentage and is calculated using the following formula:
Total Monthly Debt Payments: This includes all monthly debt obligations, such as mortgage or rent payments, car loans, student loans, credit card minimum payments, and other outstanding debts.
Gross Monthly Income: This is your total income before any taxes or deductions, such as wages, salaries, bonuses, rental income, and any other sources of income.
For example, if your total monthly debt payments amount to $1,500 and your gross monthly income is $5,000, your DTI ratio would be:
Let’s say a borrower has a gross monthly income of $5,000.
Front-End Ratio (28% Rule): Maximum allowable monthly housing costs = 28% of $5,000 = $1,400
Back-End Ratio (36% Rule): Maximum allowable total monthly debt payments = 36% of $5,000 = $1,800
In this scenario, the borrower’s total monthly debt payments, should not exceed $1,800. This includes their housing costs (including the proposed mortgage payment) that should not exceed $1,400.
Similar to the 28/36 rule, the 35/45 rule sets limits on the borrower’s debt-to-income (DTI) ratio. This is so they can manage their mortgage payments and other financial obligations without becoming weighed down. The rule is made up of two components:
Assuming a borrower has a gross monthly income of $6,000:
Front-End Ratio (35% Rule): Maximum allowable monthly housing costs = 35% of $6,000 = $2,100
Back-End Ratio (45% Rule): Maximum allowable total monthly debt payments = 45% of $6,000 = $2,700
In this scenario, the borrower’s total monthly debt payments, should not exceed $2,700. This includes their housing costs (including the proposed mortgage payment) that should not exceed $2,100.
The 25% after-tax rule is a guideline that suggests allocating no more than 25% of your after-tax monthly income toward your mortgage payment. This rule is intended to help individuals and families manage their mortgage payments while also having enough funds for other essential expenses and financial goals.
Calculate After-Tax Income: Start by determining your monthly after-tax income. This is the amount you receive after deducting taxes from your gross income.
Calculate Maximum Mortgage Payment: Multiply your after-tax income by 25% to find the maximum amount you should allocate toward your mortgage payment, including principal, interest, property taxes, and homeowners’ insurance.
For example, if your after-tax monthly income is $4,000:
Maximum mortgage payment = 25% of $4,000 = $1,000
This rule suggests that your mortgage payment should not exceed $1,000 per month based on your after-tax income.