Calculating Your Debt Ratio

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Most lenders will calculate this information for you, free of charge and with no obligation. They will provide you with an approximate amount you may be able to borrow. Some lenders will go a step further, offering a firm pre-purchase loan commitment before you buy a home. Having a pre-purchase loan commitment is like being a cash buyer and may give you more bargaining power when shopping for a home.

Use this work sheet to find your approximate monthly debt ratio, including a borrowing limit. Your new home price range is probably right if your debt ratio is below 36%. If it is right at 36%, you are probably right at the upper limit of your price range and should consider whether unplanned expenses might prevent you from making your new house payment. If your debt ratio exceeds 36% you need to reduce your debt, increase your down payment or reduce the price you pay for your home.

Fill in the empty boxes below to determine your debt ratio. Those fields that already have a zero will be calculated. Do not use any non-numeric values such as commas, dollar signs, etc.

1. Enter your gross annual income.
(If you prefer, you may enter your weekly before-tax income in the next field and this will be calculated for you.)
  Enter your gross weekly income. (If you entered an amount in the field above, leave this field blank.)
2. This is your gross monthly income.
3. Your approximate house payment limit, including principal, interest, taxes and insurance (PITI):
4. Your monthly debt ratio limit:
5. Enter values for each of the items below to find your total debt.  
  Actual Mortgage Amount, including PITI:
  Auto Loan/Lease Payments
  Student/Other Loans
  Credit Cards (minimum monthly payment)
  Installment Debt
  Child Support/Alimony
  Total Debt:
6. Your debt ratio: %
You may print this form for your convenience, or press the Reset button to try a different set of numbers.


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