This interim rule simplifies NCUA's share insurance regulations on testamentary accounts, frequently referred to as revocable trust accounts or payable on death accounts, and joint ownership accounts. These amendments are similar to those adopted by the Federal Deposit Insurance Corporation (FDIC) for its deposit insurance regulations. The first amendment increases available share insurance coverage on payable on death accounts by adding parents and siblings to the list of relatives for whom a member may receive separate coverage. The second amendment simplifies the method for determining the amount of insured funds a person may have in one or more joint accounts by eliminating the first of two steps used to make such determinations. These amendments are adopted as an interim rule to provide parity between NCUA and FDIC insurance regulations on commonly held accounts, and to aid the public and prevent confusion over the amount of federal insurance available on those accounts.