Miss. Code § 27-7-25
There shall be included in computing the net income of each partner his distributive share, whether distributed or not, of the net income of the partnership for the taxable year.
The net income of the partnership shall be computed in the same manner and on the same basis as provided for individuals, provided no personal exemption shall be granted and, provided further, that husband and wife partnerships shall not be recognized for the purpose of this article, unless it can be proven that husband and wife have each contributed capital out of their separate estates, and not by gift, from one to the other.
In the case of partnerships, each partner that would otherwise be required to include more than twelve (12) months of income in a single taxable year may elect to include such excess in income in one (1) year or ratably over a period of four (4) taxable years.
In the event the individual partners fail to report and pay the taxes imposed according to this section, then the partnership and the general partners shall be jointly and severally liable for said tax liability and shall be assessed accordingly. However, the partnership and/or general partner shall not be liable if the partnership withholds five percent (5%) of the net gain or profit of the partnership for the tax year and remits the same to the commissioner. Such amounts paid to the commissioner shall be deemed to be payments of estimated tax of the partners and shall be allocated pro rata to the partners' taxpayer accounts. The commissioner may allow, or require, block or composite filing by a partnership, or withholding on a nonresident partner.
Magnetic media reporting may be required in a manner to be determined by the commissioner.
Partnership returns shall be filed in such manner and at such time as prescribed by law.
Miss. Code § 27-7-25