Miss. Code § 27-65-5
"Wholesaler," "jobber" or "distributor" means a person doing a regularly organized wholesale or jobbing business, known to the trade as such, and selling to licensed retail dealers or other wholesalers for resale in the regular course of business. This classification has no bearing on rates of tax due under this chapter, each sale or part of sales being taxable or exempt depending upon the class in which it falls.
"Wholesale sales" shall apply to:
A sale of a service taxable under Section 27-65-23 for resale in the regular line of business, when made to a regular dealer in that service and when the dealer is licensed under Section 27-65-27 of this chapter if located in this state, or a charge for custom processing rendered upon merchandise for resale or rental by a dealer licensed under Section 27-65-27.
A sale of telecommunications services taxable under Section 27-65-19 for resale in the regular course of business, when made to a regular telecommunications provider of the service and the provider is the holder of a permit issued under Section 27-65-27 and is located in this state or is providing telecommunications services in this state.
A sale of specified digital product taxable under Section 27-65-26 for resale in the regular course of business, when made to a regular dealer of specified digital products and the dealer is the holder of a permit issued under Section 27-65-27 and is located in this state.
"Wholesale sale" shall not include a transaction whereby property is delivered to, and collection for the transaction is made from, a person that will consume the property rather than resell it even though the billing is to a retailer.
However, when a taxpayer sells merchandise and has paid a rate equal to the retail rate of tax on the purchase price to a wholesaler, the taxpayer may take credit for the tax paid to the wholesaler from the tax due on the sale of the merchandise specifically included in his return to the commissioner.
The quantity of property or services sold or the price at which sold is immaterial in determining whether or not a sale is at wholesale. Sales may be classed as wholesale, or exempt, only if evidenced by proper and adequate records and invoices to substantiate the wholesale rate or exemption from the tax on each individual sale.
The substantiation of the wholesale sales must be by an invoice clearly indicating the date, the name and address of the vendor and vendee, the items sold and the price thereof. Such proof of wholesale sales shall be filed in chronological order and thus preserved for a period of three (3) years from the date of sale. These records shall be subject to inspection by the commissioner and his agents, at their discretion, for the verification of returns filed by either the wholesaler or his customers.
The substantiation of an exempt sale must be by an invoice containing the same information as required for the wholesale sales. This requirement shall apply equally to a retailer making wholesale or exempt sales.
Any failure to comply with all the above requirements shall subject the violator to the retail rate of tax on all such violations.
Miss. Code § 27-65-5