operating and capital costs for natural gas liquids for the year ended December 31, 2020. The Trust’s Interest income for the years ended December 31, 2020 and 2019 was $5,756 and $29,415, respectively. In accordance with the Trust Indenture and as explained below, interest on cash on hand was paid at a rate equivalent to 1.5% below the prime interest rate.
General and Administrative Expense. General and administrative expense was $193,947 and $202,747 for the years ended December 31, 2020 and 2019, respectively. The Trustee’s fees are included in general and administrative expense.
For the year ended December 31, 2020, the Trustee was due $475,000 for its services. The Trust paid $433,153 of this amount to the Trustee, and $41,847 was allocated to offset against interest due to the Trust under the Trust Indenture. The Trust Indenture requires that cash being held by the Trustee earn interest at 1.5% below the prime rate, which would have yielded the Trust a 3.25% annualized return from January 1, 2020 through March 2, 2020, a 2.75% annualized return from March 3, 2020 through March 14, 2020 and a 1.75% annualized return from March 15, 2020 through December 31, 2020. However, due to the current interest rate environment, the Trustee was unable to obtain an account in which such an interest rate was available. In the event such an interest rate is unavailable in the future, the Trustee intends to allocate certain of its fees due to the Trust to meet the minimum interest rate payable under the Trust Indenture. In future periods the Trustee will continue to allocate a portion of the fees earned for its services to the Trust until all remaining interest due to the Trust is fully offset.
Unreimbursed Expenses and the Contingent Reserve. The Working Interest Owners partially reimburse the Trust each quarter for amounts paid in connection with the Trustee’s services. For the year ended December 31, 2020, the Trustee’s aggregate fees were $433,153 and the Working Interest Owners reimbursed the aggregate sum of $383,588 to the Trustee, which was the same amount reimbursed for the year ended December 21, 2019. As of the years ended December 31, 2020 and 2019, the Trust incurred unreimbursed expenses of $8,565 and $23,629, respectively.
The terms of the Trust Indenture provide, among other things, that the Trustee may establish cash reserves and borrow funds to pay liabilities of the Trust, and may pledge assets of the Trust to secure payment of the borrowings in accordance with the Trust Indenture. The Trustee reserves the right to determine whether or not to release cash reserves in future periods with respect to any reimbursement expenses.
For the year ended December 31, 2020, the Trustee increased the Contingent Reserve by (1) $22,268 of Royalty income received from BP in March 2020 after the distribution to unitholders had been announced for the month of March 2020, which Royalty income was included in the April 2020 distribution to unitholders, (2) $23,629 reimbursement not received from Scout until January 2020 but included in the December 2019 distribution to unitholders, (3) $147,893 Royalty income for February and March 2020 included in the March 2020 distribution to unitholders but not received from Scout until April 2020, (4) $583 for interest earned on the Contingent Reserve in the second quarter of 2020, (5) $7,238 of Royalty income received from BP in September 2020 after the distribution to unitholders had been announced for the month of September 2020, which Royalty income was included in the October 2020 distribution calculation, (6) $83 for interest earned on the Contingent Reserve in the third quarter of 2020, (7) $300 for an overpayment received from Hilcorp in July 2020, (8) $24 for interest earned on the Contingent Reserve in the fourth quarter of 2020, (9) $106,529 for the amount of distributable income for the fourth quarter of 2020 but withheld as cash reserves for current Trust expenses and (10) $11,990 reimbursement not received from Hilcorp in September 2020 but received in October 2020.
For the year ended December 31, 2020, the Trustee decreased the Contingent Reserve by (1) $844 due to an overpayment received in error from BP in December 2019 that was deducted from BP’s January 2020 payment to the Trust, (2) $147,893 Royalty income for February and March 2020 included in the March 2020 distribution to unitholders but not received from Scout until April 2020, (3) $22,268 of Royalty income received from BP in March 2020 after the distribution to unitholders had been announced for the month of March 2020, which Royalty income was included in the April 2020 distribution to unitholders, (4) $2,303 which was the difference between the amount to be paid to unitholders in July 2020 and the amount in the Trust’s operating account as of June 30, 2020, (5) $19,412, as expenses were greater than Royalty income for the three months ended September 30, 2020, (6) $11,990 for a reimbursement not received from Hilcorp