"Surplus income" refers to the extra money or funds that remain after all essential expenses are paid. It is the amount left over for saving, investing, or spending on non-essential items or activities. Full definition
During the 9 months, this bankrupt had to report her income every month so we could verify that she was not required to pay surplus income payments. (hoyes.com)
In determining how much you may have to pay, all sources of income are included in the calculation of surplus income, including vacation pay. (bankruptcy-canada.com)
The most recent surplus income limits can be found here. (hoyes.com)