Interests of subsidiaries (Tables)

12 Months Ended

Mar. 31, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of subsidiaries

Name of company	Place of incorporation and kind of legal entity	Particulars of issued capital/ registered capital			Percentage of capital held by the Company				Principal activities
					2017		2018
Bonso Electronics Limited * (“BEL”)	Hong Kong, limited liability company	$	HK5,000,000 (US$641,026)			100%		100%	Investment holding, providing management and administrative support to the Group companies
Bonso Investment Limited  (“BIL”)	Hong Kong, limited liability company	$	HK3,000,000 (US$384,615)			100%		100%	Investment holding and property investment
Bonso Electronics (Shenzhen) Company, Limited (“BESCL”)	PRC, limited liability company	US$12,621,222				100%		100%	Investment holding and property rental
Bonso Advanced Technology Limited *   (“BATL”)	Hong Kong, limited liability company	$	HK1,000,000 (US$128,205	)		100%		100%	Investment holding and trading of scales and pet electronics products
Bonso Advanced Technology (Xinxing) Company, Limited  (“BATXXCL”)	PRC, limited liability company	US$10,000,000				100%		100%	Production of scales and pet electronics products and property rental
Bonso Technology (Shenzhen) Company, Limited (“BTL”)	PRC, limited liability company	HK$200,000				100%		100%	Product development