About Us Site Index Contact Us Home  > Employer Services  >  Interest and Penalties Interest and Penalties   Mississippi law requires reports to be filed, and taxes to be paid, on or before the end of the month following the close of the calendar quarter reported. Interest is calculated at 1 percent per month on any portion of a month in which the payment is past due, and continues to accrue until all taxes, penalties and interest are paid. Penalties are charged in addition to interest. A penalty for late filing is charged beginning 30 days after the due date of the report.  The amount of penalty for late reporting is an additional 10 percent of tax due. An additional penalty for late payment is charged 60 days after due date or when a warrant for collection is issued.  The amount of this penalty is 10 percent of tax due.  Total penalties generally will not exceed 20 percent for any calendar quarter.     There are service centers that offer programs and resources geared toward your job seeking and claim needs.   Find a WIN Job Center   New Hire Reporting   Required Job Posters   Employment Issues   Find Tax Field Reps   Rehiring Veterans   MDES Law Book   Why should I report new hires?   When will I be liable to pay UI taxes?   What is the tax rate for a new employer?   What is the minimum and maximum rate in Mississippi?   What are the report and payment due dates?   How do I determine if a worker is considered contract labor?   All FAQs   Mississippi.gov   USDOL   Privacy & Security Disclaimer | Accessibility Policy | Internal Security The Mississippi Department of Employment Security is an equal opportunity employer. Auxiliary aids and services are available upon request to individuals with disabilities.