Intangible Assets

12 Months Ended

Sep. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets The Company recorded $0.2 million of customer base assets related to a purchased client list and wrote off $11.1 million of fully amortized intangible assets during the year ended September 30, 2022.

The gross and net carrying values of intangible assets as of the balance sheet dates, by major intangible asset class are as follows (in millions):

	September 30, 2022						September 30, 2021
	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
Intangible assets subject to amortization:
Trade/domain names	$	3.7	$	(1.6)	$	2.1	$	3.7	$	(0.9)	$	2.8
Software programs/platforms	28.3		(19.4)		8.9		31.4		(13.3)		18.1
Customer base	29.5		(18.0)		11.5		37.7		(21.7)		16.0
Total intangible assets subject to amortization	61.5		(39.0)		22.5		72.8		(35.9)		36.9
Intangible assets not subject to amortization
Website domains	1.8		—		1.8		2.1		—		2.1
Business licenses	3.7		—		3.7		3.7		—		3.7
Total intangible assets not subject to amortization	5.5		—		5.5		5.8		—		5.8
Total intangible assets	$	67.0	$	(39.0)	$	28.0	$	78.6	$	(35.9)	$	42.7

Amortization expense related to intangible assets was $14.4 million, $15.1 million, and $5.8 million for the years ended September 30, 2022, 2021, and 2020, respectively.

As of September 30, 2022, estimated future amortization expense was as follows:

(in millions)
Fiscal 2023	$	12.6
Fiscal 2024	5.0
Fiscal 2025	1.9
Fiscal 2026	1.2
Fiscal 2027 and thereafter	1.8
	$	22.5