Miss. Code § 27-45-7
If there exist upon a portion of a tract of land sold for taxes a lien, either of a deed of trust or mortgage of any kind, the mortgagee or holder of the notes secured by such deed of trust, or any person interested in such real estate may redeem that portion of the land so sold in solido upon which portion such mortgagee or owner of notes secured by deed of trust holds such lien in the following manner, to-wit:
Such mortgagee or owner of notes secured by a deed of trust or any person interested in such real estate may apply, in writing, to the chancery clerk of the county in which the land was sold, within the time provided by law, for redemption from the sale for taxes of such portion of the entire tract so sold in solido. Upon the application being filed with him, it shall be the duty of the chancery clerk to give ten (10) days' notice, in writing, of such application, by registered mail, to the last known post-office address with return receipt requested, to the owner and to the purchaser at the tax sale, and to all persons holding mortgages or other liens of record on the land so sold in solido or any part thereof, which notice shall designate a time not less than ten (10) days from the mailing thereof when such clerk shall hear and perform the duties hereinafter provided for. The clerk shall enter on the record of such tax sale notations giving the date when such notices were mailed and the names and post-office addresses of persons to whom mailed. On the date named for such hearing, the chancery clerk shall make such investigation as he may deem necessary to ascertain the relative value which that portion of the land on which the lien of such mortgage or deed of trust is held by the applicant, or by any other person, bears to the value of the entire land sold in solido for taxes, and the chancery clerk shall apportion the taxes due upon such portion at the ratio which said portion, upon which the lien exists, bears to the entire value of the property sold in solido for taxes. Upon such apportionment, the mortgagee or holder of the deed of trust, or any person interested in such real estate, shall be entitled to redeem that part of the land by payment of the sum apportioned thereon to the chancery clerk, regardless of the amount of the purchaser's bid at the tax sale, with its proportionate part, calculated as above provided, of all costs, damages and interest consequent upon the sale, and also all state and county taxes that have accrued upon that portion of said land since the sale, apportioned by the chancery clerk in the manner hereinabove provided, together with interest thereon, at the rate of one per centum per month, or any fractional part thereof, from the date such taxes shall have accrued.
Miss. Code § 27-45-7