Adjustments without interest. A State or local government employer who makes, or has made, an undercollection or underpayment of the hospital insurance taxes imposed by sections 3101(b) and 3111(b) that—
Are required to be paid by reason of section 3121(u)(2), and
Are required to be reported on returns due July 31, 1986, October 31, 1986, or February 2, 1987.
Example. The application of the provisions of this section are illustrated by the following example:
A State or local government employer should have withheld and paid $100 dollars in hospital insurance taxes for the quarter beginning April 1, 1986, and ending June 30, 1986. The due date for the return and payment for that period is July 31, 1986. If the employer made the payment by February 2, 1987, then, under section 6601, interest is not assessable with respect to the underpayment of the hospital insurance taxes. If the employer did not make the payment by February 2, 1987, the interest is assessable for the period from July 31, 1986, until the time of payment.