Establishment of Consolidated Revenue Fund:Authorisation of Expenditure from Consolidated Revenue Fund-Default of Appropriations

1. All revenues or other moneys raised or received by the Federation (not being revenues or other moneys payable under this Constitution or any Act of the National Assembly into any other public fund of the Federation established for a specific purpose) shall be paid into and form one Consolidated Revenue Fund of the Federation. 
2. No moneys shall be withdrawn from the Consolidated Revenue Fund of the Federation except to meet expenditure that is charged upon the fund by this Constitution or where the issue of those moneys has been authorised by an Appropriation Act, Supplementary Appropriation Act or an Act passed in pursuance of section 75 of this Constitution. 
3.  No moneys shall be withdrawn from any public fund of the Federation other than the Consolidated Revenue Fund of the Federation unless the issue of those moneys has been authorised by an Act of the National Assembly. 
4. No moneys shall be withdrawn from the Consolidated Revenue Fund or any other public fund of the Federation, except in the manner prescribed by the National Assembly. Authorisation of Expenditure from Consolidated 

Revenue Fund

1. The President shall cause to be prepared and laid before each  House of the National Assembly at any time in each financial  year estimates of the revenues and expenditure of the Federation  for the next following financial year.
2.  The heads of expenditure contained in the estimates (other than  expenditure charged upon the Consolidated Revenue Fund of the  Federation by this Constitution) shall be included in a bill, to be known as an Appropriation Bill, providing for the issue from the  Consolidated Revenue Fund of the sums necessary to meet that  expenditure and the appropriation of those sums for the purposes specified therein
3.  If in respect of any financial year it is found:

(a) that the amount appropriated by the Appropriation Act for any purpose is insufficient; or
(b) that a need has arisen for expenditure for a purpose for which no  amount has been appropriated by the Act, a supplementary  estimate showing the sums required be laid before each House of

the National Assembly and the heads of any such expenditure  shall be included in a Supplementary Appropriation Bill.  Authorisation of Expenditure in Default of  Appropriations

1.  If the Appropriation Bill in respect of any financial year has not  been passed into law by the beginning of the financial year, the  President may authorise the withdrawal of moneys from the Consolidated Revenue Fund of the Federation for the purpose of  meeting expenditure necessary to carry on the services of the  Government of the Federation for a period not exceeding 6  months or until the coming into operation of the Appropriation  Act, whichever is earlier;
2. Provided that the withdrawal in respect of any such period shall  not exceed the amount authorised to be withdrawn from the  Consolidated Revenue Fund of the Federation under the provisions of the Appropriation Act passed by the National  Assembly for the corresponding period in the immediately  preceding financial year, being an amount proportionate to the  total amount so authorised for the immediately preceding  financial year.

Contingencies Fund

1.  The National Assembly may by law make provisions for the  establishment of a Contingencies Fund for the Federation and for  authorising by the President, if satisfied that there has arisen an  urgent and unforeseen need for expenditure for which no other  provision exists, to make advances from the Fund to meet the  need.
2. Where any advance is made in accordance with the provisions of  this section, a Supplementary Estimate shall be presented and a  Supplementary Appropriation Bill shall be introduced as soon as possible for the purpose of replacing the amount so advanced.