Accrual to Cash Basis in QB Online, There are two ways to do this either to change the basis in the account and settings page or within the specific report.
Steps as an Accrual Accounting to Cash basis Accounting follows:
Click the gear icon
Select Account and settings.
Go to the Advanced tab.
Expand the Accounting section.
From the Accounting method, drop-down menu select Cash
On the reports, under the Accounting method section simply select Cash