The value of certain noncash fringe benefits you receive from your employer is considered part of your pay. Your employer generally must withhold income tax on these benefits from your regular pay.
Although the value of your personal use of an employer-provided car, truck, or other highway motor vehicle is taxable, your employer can choose not to withhold income tax on that amount. Your employer must notify you if this choice is made. taxmap/pubs/p505-003.htm#en_us_publink10007273
Your employer can choose to treat a fringe benefit as paid by the pay period, by the quarter, or on some other basis as long as the benefit is considered paid at least once a year. Your employer can treat the benefit as being paid on one or more dates during the year, even if you get the entire benefit at one time. taxmap/pubs/p505-003.htm#en_us_publink10007274
Your employer can choose to treat a benefit provided during November or December as paid in the next year. Your employer must notify you if this rule is used. taxmap/pubs/p505-003.htm#en_us_publink10007275
Your employer considers the value of benefits paid from November 1, 2008, through October 31, 2009, as paid to you in 2009. To determine the total value of benefits paid to you in 2010, your employer will add the value of any benefits paid in November and December of 2009 to the value of any benefits paid in January through October of 2010.taxmap/pubs/p505-003.htm#en_us_publink10007276
Your employer cannot choose when to withhold tax on the transfer of either real property or personal property of a kind normally held for investment (such as stock). Your employer must withhold tax on these benefits at the time of the transfer. taxmap/pubs/p505-003.htm#en_us_publink10007277
Your employer can either add the value of a fringe benefit to your regular pay and figure income tax withholding on the total or withhold a flat percentage of the benefit's value.
If the benefit's actual value cannot be determined when it is paid or treated as paid, your employer can use a reasonable estimate. Your employer must determine the actual value of the benefit by January 31 of the next year. If the actual value is more than the estimate, your employer must pay the IRS any additional withholding tax required. Your employer has until April 1 of that next year to recover from you the additional income tax paid to the IRS for you. taxmap/pubs/p505-003.htm#en_us_publink10007278
Your employer must report on Form W-2 the total of the taxable fringe benefits paid or treated as paid to you during the year and the tax withheld for the benefits. These amounts can be shown either on the Form W-2 for your regular pay or on a separate Form W-2. If your employer provided you with a car, truck, or other motor vehicle and chose to treat all of your use of it as personal, its value must be either separately shown on Form W-2 or reported to you on a separate statement. taxmap/pubs/p505-003.htm#en_us_publink10007279
For information on fringe benefits, see Fringe Benefits under Employee Compensation in Publication 525, Taxable and Nontaxable Income.