Hi, can anyone help me on the tax efficient savings that companies offer their employees, particulary Car Salary Sacrifice? The reason I'm asking is my ex has a Salary Package of £85k but the Child Maintenance Service are only taking into consideration £71k, they apparently get their figures direct from HMRC so I am trying to work out if it is the Car Salary Sacrifice which is bringing down the taxable income figure with HMRC. He works for a large company on payroll so there isn't any self-assessment. All I can think of is that it is the Car that is billed on the Companies benefits blurb as being a "tax efficient savings scheme"..... Anyone up on tax and can understand whether this is what is happening here?