Satisfaction of a money judgment for support is to be credited as follows:
The money is first to be credited against the current month’s support.
Any remaining money is next to be credited against the accrued interest that remains unsatisfied.
Any remaining money is next to be credited against the principal amount of the judgment remaining unsatisfied.
Notwithstanding the above, a collection received as a result of a tax refund offset is first to be credited against past due support assigned to the state prior to satisfaction pursuant to subsections (1), (2), and (3).