Tax season is just around the corner, and the City of Kansas City, Missouri, is reminding businesses and residents about a few important 2019 tax-year updates and deadlines. New Tax Forms are available online The current 2019 tax information on City tax requirements is available online . File Online You can file and pay all required City taxes anytime using our Quick Tax system. If you use Quick Tax, you can ensure timely and accurate processing of tax returns and payments. With Quick Tax, you can also view all tax-related activity on your account including filings, payments and tax notifications. Mark the Calendar Feb. 29, 2020 – Deadline for business license applications and payments April 15, 2020 2019 Wage Earner Earnings Tax and Extensions Deadline 2019 Calendar Year Profits Earnings Tax and Extensions Deadline