What is the 'FrontEnd Ratio'
The frontend ratio is a ratio that indicates what portion of an individual's income is used to make mortgage payments. It is calculated as an individual's monthly housing expenses divided by his or her monthly gross income and is expressed as a percentage. Monthly gross income is simply annual income divided by 12 (months). Lenders use the frontend ratio in conjunction with the backend ratio to approve mortgages.
Calculated as:
BREAKING DOWN 'FrontEnd Ratio'
For example, if your annual income is $60,000, your monthly income is $5,000(60,000/12). By asking your lender what frontend ratio would be required in order for your mortgage to be approved, you can figure how much of that $5,000 you can allocate to your mortgage payments. If the required frontend ratio is 31%, you can allocate $1,550 (5,000 x 0.31). Thus, if your PITI is $1,550 or less, you would be approved.
Typical monthly housing expenses include the mortgage principal, interest, taxes and insurance payments  collectively known as PITI.

BackEnd Ratio
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Qualification Ratio
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