The annual property tax credit cap shall be calculated as follows:
Step one: tax levy /local unit budget = percentage of appropriation attributable to tax levy.
Step two: (appropriation(s) for specific purpose(s) of charitable fund) x (percentage of appropriation attributable to tax levy) = cap on credit-eligible donations to charitable fund.
Step three: (cap on credit-eligible donations to charitable fund) x 90% = annual property tax credit cap for charitable fund.
A municipality, county, or school district may apply to the Director to change from 85 percent, the percentage by which the total tax levy is multiplied, or from 90 percent, the percentage by which the cap on credit-eligible donations to the charitable fund is multiplied.
N.J. Admin. Code § 5:30-18.3