Instanttax Service 13001 New Halls Ferry Rd Florissant, MO 63033 Phone : (314) 382-8500 Business Category Services Miscellaneous Instanttax Service 9144 W Florissant Ave Saint Louis, MO 63136 Phone : (314) 382-8500 Business Category Services Miscellaneous Instanttax Service 5901 Martin Luther King Dr Saint Louis, MO 63112 Phone : (314) 382-8500 Business Category Tax Return Preparation & Filing