Download Form 80-320 (PDF)

Mississippi Estimated Tax Underpayment Form updated 02/2013

Printable Mississippi Income Tax Form 80-320

If you underpaid or failed to pay your estimated income tax for the previous tax year, you must file form 80-320 to calculate and pay any interest or penalties due. For more information, see the Mississippi Income Tax page.

Source: http://www.dor.ms.gov/docs/indiv_80320128.pdf