How can you find out why imputed income is coming out your pay?

Imputed income is income that is the result of you providing services to yourself, such as owning a home rather than paying rent to another person. It is not normally a payroll deduction. In some cases you can be taxed on imputed income, and that might result in a payroll deduction. The best way to find out why imputed income is coming out of your pay is to ask the person who prepares the payroll about it.