In field 43: Balance Available for Family Support is where the balance available for family support, commonly called residual, guideline and actual balance for this veteran is placed. Subtract the Estimated Monthly Shelter Expense in field 42 from the Total Net Effective Income in field 41 and place the result here. Use this calculator to perform the calculation needed to arrive at the actual residual figure placed in the right hand column. Learn more about this topic in the Residual Income lesson. Refer to the VA Lender's Handbook for more details regarding residual guidelines and the charts.