The Child Maintenance Service does not hold the information requested. This is because there is no legal requirement to capture the number of ‘top-up’ applications submitted and or granted to a paying parent in calculating child maintenance. It may be helpful to explain the maximum weekly gross income the Child Maintenance Service can take into account when calculating maintenance is £3000. A receiving parent can make a ‘top-up’ application directly to His Majesty’s Courts and Tribunals service in respect of income above £3000. However, the Child Maintenance Service cannot take this into account in the main calculation.