For mortgages for which a one-time or up-front MIP is to be charged in accordance with §§ 203.259a, 203.284, or 203.285, the mortgagee shall, as a condition to the endorsement of the mortgage for insurance, pay to the Commissioner for the account of the mortgagor, in a manner prescribed by the Commissioner, a premium representing the total obligation for the insuring of the mortgage by the Commissioner or the up-front portion of the total obligation, as applicable, within 10 calendar days after the date of loan closing or within 10 calendar days after the date of disbursement of the mortgage proceeds, whichever is later.