New York Laws
Article 19-A - Business Improvement Districts
980-K - Tax and Debt Limitations.

(b) The district charge, exclusive of debt service, levied in a given
year against real property in a district may not exceed twenty percent
of the total general municipal taxes levied in that year against the
taxable real property in the district. The district charge so levied
shall be included in the total amount, if any, that the municipality is
permitted by law to raise in that year by a tax on real property.