SECTION 1:
INTRODUCTION
The Missouri Department of Revenue (department) supports submission of tax
payments and in some instances return filing information via Electronic Funds Transfer
(EFT) and Automated Clearing House (ACH) Credit using the CCD+ transaction with
TXP Addendum Convention. The TXP Addendum is a national standard used by
participating taxing agencies to provide tax information in defined fields to be transmitted
along with the ACH payment transaction. A complete explanation of what this method
may be used for is provided in this publication. Follow the instructions and record
layouts carefully to ensure proper accounting and posting of payments and/or returns. A
participating customer or taxpayer must confirm that the financial institution supports
origination of transactions using ACH Credit only in the CCD+ transaction using TXP
Addendum.
Participating customers and financial institutions must work together to ensure
that accurate data is transmitted in a timely fashion. A full understanding of proper
procedures to report and remit tax payments is required for all participants. Using the
TXP Addendum Convention emulates return/coupon filing in many instances. Failure to
properly format the required information could result in delays in processing and possible
interest and/or penalty charges. Some financial institutions may charge a fee for this
service.
Financial institutions will provide the customer or taxpayer with instructions on
originating payments to the department. The department will report, to the appropriate
contact, errors or changes needed for transactions received.
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