REVENUE RECOGNITION (Disaggregation of Revenue by Major Service Line) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 308,227	$ 519,205	$ 1,085,807	$ 830,368
U.S. assisted tax preparation
Disaggregation of Revenue [Line Items]
Total revenues	154,489	283,956	541,139	358,174
U.S. royalties
Disaggregation of Revenue [Line Items]
Total revenues	23,902	44,965	67,427	59,644
U.S. DIY tax preparation
Disaggregation of Revenue [Line Items]
Total revenues	21,681	34,089	94,331	42,040
International
Disaggregation of Revenue [Line Items]
Total revenues	15,671	11,804	132,347	97,311
Refund Transfers
Disaggregation of Revenue [Line Items]
Total revenues	7	50,494	11,752	52,794
Emerald Card®
Disaggregation of Revenue [Line Items]
Total revenues	21,951	16,657	48,801	39,128
Peace of Mind® Extended Service Plan
Disaggregation of Revenue [Line Items]
Total revenues	16,101	16,954	72,871	75,451
Tax Identity Shield®
Disaggregation of Revenue [Line Items]
Total revenues	4,927	8,138	19,129	17,308
Interest and fee income on Emerald AdvanceSM
Disaggregation of Revenue [Line Items]
Total revenues	27,590	32,741	28,754	33,780
Wave
Disaggregation of Revenue [Line Items]
Total revenues	14,803	11,213	41,197	25,740
Other
Disaggregation of Revenue [Line Items]
Total revenues	$ 7,105	$ 8,194	$ 28,059	$ 28,998