S.D. Codified Laws § 4-11-18
For each audit made of any agency of state government, except those agencies or that portion of an agency that is financed with state general fund appropriations, the audited agency shall pay for audit services computed by dividing the estimated total expenses of the department of legislative audit relating to state government audits for the current fiscal year by the estimated number of audit hours to be spent performing state government audits during the same year and the result multiplied by the number of hours spent on the particular audit. For audits of state agencies if more than one fund is involved, the auditor-general shall determine the method of allocating audit costs. For each audit made of any county, municipality, school district, special district, or other local government agency, the audited agency shall pay for audit services computed by dividing the estimated total expenses of the Department of Legislative Audit relating to local government audits for the current fiscal year by the estimated number of audit and travel hours to be spent performing local government audits during the same year and the result multiplied by the number of hours spent on the particular audit. In all cases where the auditor-general, assistant, or employee is subpoenaed as a witness for a county or other public corporation in the prosecution of its officers reported on by the department, the county, or such other public corporation shall pay all witness fees and all expenses of serving subpoenas and attachment for witness and all expenses for procuring testimony, including the necessary expenses of such witness. All claims for services and expense of the auditor-general or assistants against such county or other public corporation shall be prepared in favor of the state treasurer in payment thereof at the first regular or special meeting of the governing board after the audit is completed. Upon the neglect or refusal of the governing board to issue a warrant in payment of the claim as herein provided, interest at the Category A rate of interest as established in § 54-3-16 shall be added for the time the same remains unpaid after the date of such meeting.
SDCL 4-11-18