A borrower has gross monthly income of $9,200. Their monthly debts are: car payment $380, student loan $275, credit card minimums $125, and proposed PITI of $2,300. What is the back-end DTI?

Correct answer: 33.5%

Back-end DTI = ALL monthly debts / Gross Income = ($380 + $275 + $125 + $2,300) / $9,200 = $3,080 / $9,200 = 33.48%, rounded to 33.5%. This includes the proposed housing payment (PITI) plus all recurring monthly obligations.