Originally Posted by
AK lawyer
All true. That's why I asked if (s)he was paying through an agency. But (s)he said at the beginning "I started paying ... However, i've been overpaying ...". This language suggests that he is voluntarily paying and that it's not some sort of payroll witholding or garnishment.
But if (s)he's been overpaying, I hesitate to tell him or her to simply reduce his/her payments below the amount (s)he indicates (s)he should now be paying ($520/mo). The overage could be regarded as gifts. Additionally, an underpayment now could put the custodial parent in difficulty and the custodial parent could very well argue that this difficulty is not of his/her making.