Within such period of time as shall be established by rule of the supreme court, the testamentary trustee then in office shall file with the district court of the county where the will was admitted to probate an intermediate account under oath covering such year showing:

(a) The period which the account covers;

(b) a complete statement of the trust capital and income received and expended;

(c) present investments and other trust property held;

(d) the names and addresses of the beneficiaries and which of them are minors or adjudged disabled persons;

(e) proposed distributions;

(f) the payment of expenses, commissions and attorney fees; and

(g) such other facts as the court may require.