What is the penalty for perjury in a child support hearing regarding payments received from non-custodial parent?

The reason for the perjury is not the primary issue. The primary issue is the perjury itself, which is showing contempt for the authority of the court. Penalties can range from fines to jail.

However, money received outside a child support hearing are considered gifts, so claiming one OS not receiving child support may not necessarily be a lie.