The official state interest rates, as referenced throughout the South Dakota Codified Laws, are as follows:

(1) Category A rate of interest is four and one–half percent per year;

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(2) Category B rate of interest is ten percent per year;

(3) Category C rate of interest is twelve percent per year;

(4) Category D rate of interest is one percent per month or fraction thereof;

(5) Category E rate of interest is four percent per year;

(6) Category F rate of interest is fifteen percent per year; and

(7) Category G rate of interest is five–sixth percent per month or fraction thereof.

Source: SL 1984, ch 319, § 1; SL 1987, ch 362; SL 1994, ch 366, § 1; SL 2000, ch 226, § 1.