In Himma Merchants Ltd. V. Alhaji Inuwa Aliyu, (1994) 6 SCNJ (Pt.1) 87 (1994) 5 NWLR (Pt. 347) 657, this court in a similar situation held as follows per Onu, JSC: “…..Where therefore there is no evidence whatsoever, as in the instant case, that the claim of interest is founded upon any rationale e.g. mercantile custom or trade usage known to the parties the claim of interest for 20% per month from July, 1988, which anti-dates the judgment passed on 27th October, 1989 by the trial court is without foundation and ought to have been disallowed by the court below.” See also; Union Bank of Nigeria Ltd. Vs Prof. A. O. Ozigi (1994) 3 NWLR (Pt.333) 385 (1994) 3 SCNJ 42 at 56.
TWO CIRCUMSTANCES WHERE INTEREST MAY BE AWARDED
Interest may be awarded in a case in two distinct circumstances, namely: (i) As of right: and (ii) Where there is a power conferred by statute to do so, in exercise of the Court’s discretion. Interest may be claimed as a right where it is contemplated by the agreement between the parties, or under a mercantile custom, or under a principle of equity such as breach of a fiduciary relationship. Where interest is being claimed as a matter of right, the proper practice is to claim entitlement to it on the writ and plead facts which show such an entitlement in the statement of claim. See Per NNAEMEKA-AGU, JSC in EKWUNIFE V. WAYNE WEST AFRICA LTD (1989) LPELR-1104(SC) (PP. 33-42, PARAS. C-A).
— U.M. Abba Aji, JSC. Cappa v NDIC (2021) – SC.147/2006