Miss. Code Ann. § 27-31-17

All stocks in, bonds of or other evidences of debt issued by any agricultural credit corporation or association, and all money loaned by any such organization for agricultural purposes are hereby exempted from all ad valorem taxes; provided, however, that the exemption from taxation on money loaned, as provided herein, shall not apply to money loaned at a rate of interest in excess of eight per cent per annum.