Thanks for coming back, CMB23.
QuickBooks Online (QBO) does not have a Company Setting to set a default bank account for writing checks. On the other hand, QBO employs "sticky" settings. It will recall the bank account that was used in the previous transaction of that type. Although this is not a default account, it functions similarly to a regular account.
When a new transaction is entered, features such as Checks, Pay Bills, and the Deposit field on the Receive Payments screen will always populate with the last account used. The "sticky" settings are unique to each user. Until they create a check with a different account, each user will default to the first bank account listed on the Chart of Accounts.
You can also check out these links that'll help you review your downloaded bank transactions and put them in the correct accounts. This way, you can ensure your record is accurate:
I'll be here to continue assisting if you have any other concerns about managing your bank accounts in QuickBooks. Just leave the details below, and I'll get back to you.
