31.3202-1—Collection of, and liability for, employee tax.
(a) Collection; general rule.
The employer shall collect from each of his employees the employee tax imposed with respect to the compensation of the employee by deducting or causing to be deducted the amount of such tax from the compensation subject to the tax as and when such compensation is paid. As to the measure of the employee tax, see § 31.3201-1.
(b) Collection; payments by two or more employers in excess of annual compensation limitation.
For rules relating to payments by two or more employers in excess of the annual compensation limitation see § 31.3121(a)(1)-1.
(c) Undercollections or overcollections.
Any undercollection or overcollection of employee tax resulting from the employer's inability to determine, at the time compensation is paid, the correct amount of compensation with respect to which the deduction should be made shall be corrected in accordance with the provisions of Subpart G of the regulations in this part relating to adjustments, credits, refunds, and abatements.
(d) When fractional part of cent may be disregarded.
In collecting the employee tax, the employer shall disregard any fractional part of a cent of such tax unless it amounts to one-half cent or more, in which case it shall be increased to one cent.
(e) Employer's liability.
The employer is liable for the employee tax with respect to compensation paid by him, whether or not collected from the employee. If the employer deducts less than the correct amount of employee tax or fails to deduct any part of the tax, he is nevertheless liable for the correct amount of the tax. Until collected from him, the employee is also liable for the employee tax. Any employee tax collected by or on behalf of an employer is a special fund in trust for the United States. See section 7501. An employer is not liable to any person for the amount of the employee tax deducted by him and paid to the district director.
(f) Concurrent employment.
If two or more related corporations who are rail employers concurrently employ the same individual and compensate that individual through a common paymaster, which is one of the related corporations employing the individual, see § 31.3121(s)-1.