By Type (2)
Secured Promissory Note – Includes a section where the borrower sets aside an item such as a home, vehicle, or boat. This item is given to the lender to help cover the unpaid balance if the borrower is unable to recover after entering into default.
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Unsecured Promissory Note – Does not include a section on security. This adds financial risk to the transaction for the lender; it is recommended that the lender is careful in selecting a borrower by ensuring the potential borrower has a strong credit score and positive referrals.
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Usury Statute
Under an obligation to pay interest, no rate being specified, interest is payable from date of incurrence of debt, unless the parties have otherwise agreed, at a maximum rate of the Category C rate of interest as established in § 54-3-16, and in the like proportion for a longer or shorter term. In the computation of interest for less than a year, three hundred sixty days are deemed to constitute a year.[1]
The official state interest rates, as referenced throughout the South Dakota Codified Laws, are as follows:[2]
(1) Category A rate of interest is four and one-half percent per year;
(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.