Front-End DTI is the ratio of PITIA to Monthly Gross Income. PITIA is defined as principal, interest, taxes, insurance (including homeowners insurance and hazard and flood insurance) and homeowners association and/or condominium fees. Mortgage insurance premiums are excluded from the PITIA calculation.
Any subordinate liens are not included in the front end dti
The borrower’s Monthly Gross Income is the amount before any payroll deductions includes wages and salaries, overtime pay, commissions, fees, tips, bonuses, housing allowances, other compensation for personal services, Social Security payment, including Social Security received by adults on behalf of minors or by minors intended for their own support, annuities, insurance polices, retirement funds, pensions, disability or death benefits, unemployment benefits, rental income and other income.
You can check you eligibility here in this link............there is also a payment estimator and FAQs on the right hand side of the page....
Making Home Affordable - Home Affordable Modifications