A lender has shared the following information. All sources need to documented and taxable income as shown on a 1040 is the usual first step. Self-employed need to have records of two years to qualify.
"Below is what could be could be qualified as an FHA income:
Seasonal pay, child support, retirement pension payments, unemployment compensation, VA benefits, military pay, Social Security income, alimony, and rent paid by family all qualify as income sources. Part-time pay, overtime, and bonus pay"