Tax payments must be received or US Postal Service postmarked by August 1 (first installment) or February 1 (second installment) to avoid the accrual of interest. If a payment is received and is postmarked after August 1, 2022 it will immediately be subject to 3% interest (1.5% for the months of July, August). Interest will then continue to accrue at a rate of 1.5% per month (18% annually) and you will be billed for the balance due. The same would be true with the second payment of real estate and personal property taxes if received or postmarked after February 1, 2023. The interest will be added back to January and 3% interest will be added immediately on February 1, 2023.