Time for budget hearing; adoption; validity of levies

The hearing herein required to be held upon all budgets by all taxing subdivisions or municipalities of the state shall be held not less than ten (10) days prior to the date on which they shall certify their annual levies to the county clerk as required by law. After such hearing the budget shall be adopted or amended and adopted as amended, but no levy shall be made until and unless a budget is prepared, published and filed, but no levy of taxes shall be invalidated because of any insufficiency, informality, or delay in preparing, publishing and filing said budget.