Question

What describes a day of personal use the property owner rented his house to his employer for $50. the FMV is $75 a day.

Answer 1

1) A day of personal use of a dwelling unit is any day that the unit is used by any of the following persons.

1. You or any other person who owns an interest in it, unless you rent it to another owner as his or her main home under a shared equity financing agreement (defined later). However, see Days used as a main home before or after renting, later.
2. A member of your family or a member of the family of any other person who owns an interest in it, unless the family member uses the dwelling unit as his or her main home and pays a fair rental price. Family includes only your spouse, brothers and sisters, half brothers and half sisters, ancestors (parents, grandparents, etc.), and lineal descendants (children, grandchildren, etc.).
3. Anyone under an arrangement that lets you use some other dwelling unit.
4. Anyone at less than a fair rental price

2) Employee staying is the house for less then the FMV, will be treated as personal use.