Revenue - Schedule of Subscription and Transaction Fees Disaggregated by Customer Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,058,468	$ 641,959	$ 238,265
Subscription and transaction fees
Disaggregation Of Revenue [Line Items]
Total revenue	944,710	633,365	232,255
Subscription and transaction fees | Small-to-midsize Business and Accounting Firm Customers
Disaggregation Of Revenue [Line Items]
Total revenue	901,602	603,171	218,227
Subscription and transaction fees | Financial Institution Customers
Disaggregation Of Revenue [Line Items]
Total revenue	43,108	30,194	14,028
Interest on funds held for customers
Disaggregation Of Revenue [Line Items]
Total revenue	$ 113,758	$ 8,594	$ 6,010