Download Form 80-320 (PDF)

Mississippi Estimated Tax Underpayment Form Updated 11/-0001

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 about the Mississippi Income Tax, see the Mississippi Income Tax page.

Mississippi may also allow you to e-file your Form 80-320 instead of mailing in a hard copy, which could result in your forms being received and processed faster. For more details, read more about the Mississippi e-filing program.

Document Source: http://www.dor.ms.gov/docs/indiv_80320148.pdf

View Other Mississippi Tax Forms

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Individual Income Tax Instructions

Use this instructional booklet to aid you with filling out and filing your Form 80-105 tax return. You may file your Form 80-105 with paper forms through the mail or online with efiling.

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Individual Income Tax Return

Form 80-105 is the general individual income tax form for Mississippi residents. You must file, online or through the mail, yearly by April 17.

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Payment Voucher

You must pay estimated income tax if you are self employed or do not pay sufficient tax withholding. You need to file form 80-300 with the Mississippi Department of Revenue on a quarterly basis. This form is the replacement of the self employment vouchers

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EZ Individual Income Tax Form

This form should only be filed by a single person with no dependants and with only wages and interest income.

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Estimated Tax Underpayment Form

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.