After April 30th, property taxes are considered delinquent and subject to interest at the rate of 1% per month (12% per year). If taxes are still delinquent, they are subject to a penalty of 3% on June 1st. Interest continues to accrue until the taxes are paid in full. If you pay the first half taxes by the deadline but fail to pay the 2nd half taxes by October 31st, the unpaid portion is subject to interest at the rate of 1% per month. Any taxes still owing on December 1 are also subject to a penalty of 8%.
Example: If a taxpayer paid their property taxes on December 31st of the year the taxes first became due, the amount would include 8% interest (May through December) and 11% penalty.