Except as otherwise provided by Section 6.06.145, District license fees will be payable as follows:

1. A. Except as provided in Subsection 6.06.140 F., the license fee computed under a section of this Chapter establishing a license fee formula for the District will be payable in two equal installments, with the first installment due on October 1st of the license year and the second installment due on April 1st of the license year.
2. B. On or before February 15th of each license year, the Division will mail notice to each licensee stating the amount of the second installment payable on April 1st of the license year.
3. C. The property manager or licensee on record as of the billing date of the notice of fee each license year is presumed to be the responsible party for the entire license year unless the Division approves the transfer to another property manager or licensee under Section 6.06.060. If the licensee has not engaged in property management activity within the District until after the beginning of the license year and a transfer has been approved, then the fee payment required will be the next installment due.
4. D. In computing the license fee payable by a licensee who has not engaged in District business property management activity until after the beginning of a license year, no fee will be payable in relation to any real property which, for that license year, has been paid by another licensee.
5. E. In case of a license fee adjustment under a subsection of this Chapter establishing a license fee formula for the District:
   1. 1.  The amount of any adjustment increase allocable to the portion of the license year between October 1st and March 31st will be due 30 days after the Division’s mailing of notice of the fee adjustment to the licensee under Section 6.06.095, subject to any change in the adjustment in an appeal under Subsection 6.06.100 B.
   2. 2. The amount of any adjustment increase allocable to the portion of the license year between April 1st and September 30th will be due on April 1st of the license year or 30 days after the Division’s mailing of notice of the fee adjustment to the licensee under Section 6.06.095, whichever is later, subject to any change in the adjustment in an appeal under Subsection 6.06.100 B.
   3. 3. The amount of any adjustment decrease allocable to the portion of the license year between October 1st and March 31st, provided that the amount previously determined to be due as of that October 1st has already been paid, will be refunded to the licensee or credited to an outstanding installment amount due within 30 days after the Division’s mailing of notice of the fee adjustment to the licensee under Section 6.06.095, subject to any change in the adjustment in an appeal under Subsection 6.06.100 B.
   4. 4. The amount of any adjustment decrease allocable to the portion of the license year between April 1st and September 30th, provided that the amount previously determined to be due as of that April 1st has already been paid, will be refunded to the licensee or credited to an outstanding installment amount due within 30 days after the Division’s mailing of notice of the fee adjustment to the licensee under Section 6.06.095, subject to any change in the adjustment in an appeal under Subsection 6.06.100 B.