Maryland Chapter 13 Plan Supplemental Form — 506 Lien Value or Avoid is a document used in the Maryland bankruptcy court system to determine the value of any lien on the property of the debtor filing for bankruptcy. This form is part of the Chapter 13 Plan, which must be filed with the court in order for a debtor to be eligible for Chapter 13 bankruptcy. The form requires the debtor to list all liens on their property, including the name of the creditor, the amount of the lien, and the total value of the lien. The form also allows the debtor to state whether they wish to surrender the lien, or if they wish to redeem it. The form must be signed and notarized in order to be valid. There are two types of Maryland Chapter 13 Plan Supplemental Form — 506 Lien Value or Avoid: the 506A and 506B. The 506A form is used for secured liens, while the 506B form is used for unsecured liens.