Please be sure that your payment is postmarked no later than December 31st. Payments postmarked after December 31st will accrue a 9% penalty and interest at a rate of 1.5% per month.  County offices will be closed all weekends, Thanksgiving and the Friday after, on Christmas Day, and on New Year’s Day. Sometimes, there are additional closures during the holiday season or due to dangerous weather conditions. Please call 816-407-3200 before you come to verify that the office is open.  You may also deposit your payment in our external drop boxes 24 hours a day, and these boxes will be emptied in a timely manner at the end of the year.  Payments deposited after midnight December 31 will be considered LATE under Missouri law.  If you use a bill payment system, or any other method of payment delivery, please note that these payments are often sent to our office without a postmark. Online bill payments that come to our office without a valid postmark will be posted as of the date printed on the check. ONLINE BILL PAY SERVICES DO NOT PROCESS CHECKS THE SAME DAY YOU REQUEST. Do not request a payment date of December 31 if you plan to pay on time. MANY POST OFFICES NO LONGER POSTMARK MAIL ON THE SAME DAY IT IS DROPPED AT THEIR LOCATION, AND MANY NO LONGER HAND CANCEL MAIL. Please do not wait until December 31 to submit payment in any form.