Except for purposes which are to be financed by the issuance of bonds or by special assessment, or for other purposes not chargeable to a budget appropriation, no money shall be drawn from the treasury of the city except in accordance with an appropriation thereof for such specific purpose, nor shall any obligation for the expenditure of money be incurred without an appropriation covering all payments which will be due under such obligation in the current fiscal year. The Commission by resolution may transfer any unencumbered appropriation balance, or any portion thereof from one account, department, fund or agency to another.
The Commission may make additional appropriations during the fiscal year for unanticipated expenditures required of the city, but such additional appropriations shall not exceed the amount by which actual and anticipated revenues of the year are exceeding the revenues as estimated in the budget unless the appropriations are necessary to relieve an emergency endangering the public health, peace or safety.
Except in those cases where there is no other logical account to which an expenditure can be charged, expenditures shall not be charged directly to the contingency fund (or other similar fund). Instead, the necessary part of the appropriation for the contingency fund (or other similar fund) shall be transferred to the logical account and the expenditure then charged to such account.
At the beginning of each quarterly period during the fiscal year, and more often if required by the Commission, the City Manager shall submit to the Commission data showing the relation between the estimated and actual revenues and expenditures to date; and if it shall appear that the revenues are less than anticipated, the Commission may reduce appropriations, except amounts required for debt and interest charges, to such a degree as may be necessary to keep expenditures within the revenues.
The balance in any budget appropriation which has not been encumbered at the end of the fiscal year shall revert to the general fund.