Article 84: Supplementary and excess grants
If in respect of any financial year it is found-
a. that the amount authorized to be expended for a particular service for the current financial year is insufficient, or that a need has arisen for expenditure upon some new service not included in the Annual
Budget Statement for that year; or
b. that any money has been spent on any service during a financial year in excess of the amount granted for that service for that year; the Federal Government shall have power to authorize expenditure from the Federal Consolidated Fund, whether the expenditure is charged by the Constitution upon that Fund or not, and shall cause to be laid before the National Assembly a Supplementary Budget Statement or, as the case may be, an Excess Budget Statement, setting out the amount of that expenditure, and the provisions of Articles 80 to 83 shall apply to those statements as they apply to the Annual Budget Statement.