The income limitations for claiming SSI for a disabled child vary by whether all income is earned or unearned, how many parents are in the household and how many ineligible children are in the household, according to the Social Security Administration. For 2014, the lowest limit was $1,482 per month.
The lowest limit applies to a one-parent household with no ineligible children and with all unearned income, notes the SSA. For 2014, for all earned income for a one-parent household with no ineligible children, the limits were $3,009 and $3,731 for a two-parent household. The income limitations get higher depending on how many ineligible children are in the household, up to a maximum of six ineligible children, for which the limit is $5,175 for a one-parent household and $5,897 for a two-parent household with all earned income.