Accessing confidential information made available through MyTax Missouri subjects the user to all the conditions of Section32.057, RSMo, Confidentiality of Tax Returns and Department Records. Violation of Section 32.057 may result in criminal prosecution.
Disclaimer of Liability
In no event will the Department or any of its employees or agents be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement or substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this system, even if advised of the possibility of such damage. This disclaimer of liability applies to any damages or injury, including but not limited to those caused by any failure of performance, error, omission, interruption, deletion, defect, delay in operation or transmission, computer virus, communication line failure, or theft or destruction or unauthorized access to, alteration of, or use of MyTax Missouri information, whether for breach of contract, tortuous behavior, negligence or under any other cause of action.
Disclaimer for External Link
As you navigate MyTax Missouri, you will see links that, when clicked, will take you to other websites external to Missouri state government. The other websites have individual privacy policies tailored to the interactions available through each site. The Department is not responsible for the contents of any off-site pages referenced. The user specifically acknowledges that the Department is not liable for the defamatory, offensive or illegal conduct of any off-site pages and that the risk of injury from the foregoing rests entirely with the user. Links from MyTax Missouri to other web sites do not constitute an endorsement. These links are provided as an information service only. It is the responsibility of the web surfer to evaluate the content and the Department isn’t responsible for the availability of these outside resources or their contents. You should direct any concerns regarding any external link to its site administrator or webmaster.
Third Party Payment Services
While using this service the handling of payment convenience fees included in any transaction will be paid to a third party vendor not the Department. This handling includes the third party’s right to electronically debit a service charge if applicable for processing of Insufficient Funds or Closed Account transactions from the designated bank account in addition to any charges the taxpayer's bank may assess.
Information sent via this service
We are not responsible for:
a. The accuracy, veracity and completeness of material transmitted to us.
b. Error in the manner of the input of material transmitted to us.
c. Any information you may lose as a result of equipment or power failures or our servers terminating your session due to prolonged periods of inactivity.
Acting for another person
To use this service to access data relating to, or to carry out a transaction for another individual, business, organization or agency:
a. You must be currently appointed by that individual, business, organization or agency to access that data or carry out that transaction on their behalf, and that appointment must not have been revoked.
b. If that appointment is based on you holding a certain position (for example, as that other individual’s employee or agent for tax purposes), you must currently hold that position.
c. If that appointment is based on you holding a certain qualification (for example, as a registered tax agent), you must currently hold that qualification and that qualification must not currently be suspended or cancelled.
By using data made available through Portal, the user agrees to all the conditions stated in the Data Policy.
All transactions processed in MyTax Missouri are based on Central Standard Time Zone (CST). Please Note: The State of Missouri observes daylight saving time.
Passwords must be at least 8 characters long and meet 3 of the following 4 complexity requirements: contain an uppercase letter, contain a number, contain a special character, or contain a lowercase letter. Every 90 days your password automatically expires for security reasons.
Modification or Termination of Service
The Department reserves the right at any time, and from time-to-time, to modify, discontinue, suspend or terminate access to MyTax Missouri and to modify these TOU by posting notice on this website or sending notice to any contact point listed in your user information. The Department will not be liable for any such modification, discontinuation, suspension or termination. You can review the most current version of the TOU on our website at any time.
You may accept and agree to these TOU of the MyTax Missouri on behalf of a business, organization, agency or yourself by checking "I Agree" below. By checking the “I Agree” Box below you affirm that you have read these TOU, that you have the authority to agree to these TOU on behalf of your business, organization, agency or yourself and that the business, organization, agency or yourself will be bound by these TOU. Before you check the "I Agree" box, please carefully read the terms and conditions contained in this TOU.