South Dakota Codified Laws 10-43-50.3. Failure to file supplementary return–Secretary’s determination of additionaltax–Interest and penalties
If a taxpayer fails to file a supplementary return as required by § 10-43-50.1, the secretary may determine the amount of additional tax due, if any, based on information available to the secretary. The secretary’s determination of additional tax due, together with interest and penalty as provided in § 10-59-6, shall be made within six years after the time the supplementary return was due.
The secretary may also impose a penalty of five thousand dollars or ten percent of the additional tax due, whichever is greater, for failure to timely file a supplementary return and pay any additional tax and applicable interest as required by § 10-43-50.1. This penalty is in addition to all other penalties provided by law and shall be deposited in the state general fund.
Source: SL 2016, ch 63, § 3.