Loss Per Share (Tables)

12 Months Ended

Sep. 30, 2023

Loss Per Share [Abstract]

Schedule of Basic and Diluted Loss Per Share

Basic loss per share and diluted loss per share have been calculated in accordance with ASC 260 for the years ended September 30, 2021, 2022 and 2023 as follows:

	(Predecessor)									(Successor)
	For the year ended September 30,			For the year ended September 30,			From October 1, 2022 to October 11,			From October 12, 2022 to September 30,
	2021			2022			2022			2023
	HK$			HK $			HK $			HK $			US$
Numerator:
Net loss attributable to ordinary shareholders of Alpha Technology Group Limited		(981,035	)		(2,663,554	)		(156,387	)		(6,830,973	)		(872,321	)
Denominator:
Weighted average number of ordinary shares
— Basic		20,000			20,000			20,000			13,250,000			13,250,000
— Diluted		—			—			—			1,169,808			1,169,808
Net loss per share attributable to ordinary shareholders
— Basic		(49	)		(133	)		(8	)		(1	)		(0.07	)
— Diluted		—			—			—			(6	)		(0.75	)