§ 8. Deficiencies; Supplementary appropriations.

(a) Deficiencies.

No temporary loan shall be authorized or made to pay any deficiency arising from a failure to realize sufficient income from all sources to meet the amounts provided in the Ordinance of Estimates, but the City may temporarily borrow money for its use in anticipation of the receipts of taxes levied for any year. In case of any such deficiency the Board of Estimates shall effect reductions (which need not be pro rata) in appropriations other than those for the payment of the principal and interest of the City debt and such amounts as are fixed by law and contained in the Ordinance of Estimates, except to the extent that the City Council shall, upon the recommendation of the Board of Estimates, enact an ordinance which shall supply revenues to meet all or any part of such deficiency. No emergency loan shall be made except in accordance with the provisions of Article XI of the Constitution of Maryland.

(b) Supplementary appropriations — when authorized.

(1) Except as provided herein, the Ordinance of Estimates shall include all the moneys to be appropriated by the City for all purposes for the fiscal year for which the ordinance is applicable.

(2) Additional appropriations are permitted during the fiscal year only in the following circumstances and under the following conditions:

(i) Excess revenues.

Revenues from any source other than the full rate property tax and other taxes imposed under the authority of Article II, in excess of or in addition to those relied on by the Board of Estimates in determining the tax levy required to balance the budget, may be made available for expenditure by the municipal agency responsible for the production of those revenues by a supplementary appropriation ordinance recommended to the City Council by the Board of Estimates, duly passed by the City Council by a majority vote of its members and approved by the Mayor.

(ii) Unanticipated grants.

Grants from private or governmental sources that could not be expected with reasonable certainty at the time of the formulation of the proposed Ordinance of Estimates may be made available to the appropriate municipal agency for expenditure by a supplementary appropriation ordinance recommended to the City Council by the Board of Estimates, duly passed by the City Council by a majority vote of its members and approved by the Mayor.

(iii) Material changes; new programs.

Further appropriations for programs included in the proposed Ordinance of Estimates made necessary by a material change in circumstances, or additional appropriations for new programs that could not reasonably be anticipated at the time of the formulation of the proposed Ordinance of Estimates may be made available to the appropriate municipal agency for expenditure by a supplementary appropriation ordinance recommended to the City Council by the Board of Estimates, duly passed by the City Council by a vote of three-fourths of its members and approved by the Mayor.

Every such further or additional appropriation shall be embodied in a separate ordinance limited to a single program, purpose, activity or project therein stated, and each such supplementary appropriation ordinance shall also, anything contained in the Charter to the contrary notwithstanding, provide the revenue necessary to pay the appropriation by a source, other than the full rate property tax, imposed under the authority of Article II. The revenue shall be levied and collected as directed in the ordinance. The estimate of the revenues to be derived from any source proposed in a supplementary appropriation ordinance shall be made by the Board of Estimates.