Minn. Stat. § 281.03: AUDITOR'S CERTIFICATE.

The county auditor shall certify to the amount due on such redemption, and, on payment of the same to the county treasurer, shall make duplicate receipts for the certified amount, describing the property redeemed, one of which shall be filed with the auditor. Such receipts shall be governed by the provisions of this chapter regulating the payment of current taxes and such payment shall have the effect to annul the sale. If the amount certified by the auditor and received in payment for redemption be less than that required by law, it shall not invalidate the redemption. On redemption being made, the auditor shall record the parcel as redeemed.