property ExCursor.TooltipPad as Variant
Defines the tooltip's padding (space between tooltip's caption and its borders)

TypeDescription
Variant A string expression in "horizontal,vertical" format that defines the padding (space between tooltip's caption and its borders) for the tooltips while cursor hovers the chart, or a numeric expression that defines the horizontal and vertical padding.
By default, the TooltipPad property is "2,2". The TooltipPad property applies the padding to axes or series tooltips as well. The ShowCursorCategoryLine property specifies the flags to show the vertical/horizontal category/x-line, when the crosshair cursor hovers the chart. The ShowCursorSerieTooltip property defines the flags to show the tooltips, when the crosshair cursor hovers the charts of the series. The ShowCursorValueLine property shows or hides the horizontal/vertical value/y-line, when the crosshair cursor hovers the chart. The ShowCursorXLine property shows or hides the vertical y-line, when the crosshair cursor hovers the chart (available for xy-chart types only). The ShowCursorYLine property shows or hides the horizontal x-line, when the crosshair cursor hovers the chart (available for xy-chart types only).  

The following screen show show the tooltips with a different padding value: