Mean Balance definition
Mean Balance. - shall mean the mean balance of an account or of the assets of the trust fund during a plan year which shall be calculated as the balance in such account, or the value of the assets of the trust fund, at the beginning of the plan year, plus one- half of the excess of the total income of the account, or the trust fund in the plan year, over the total disbursements from the account or the trust fund during the plan year.