Hi Ivan.
Thank you for reaching out to us here on the Community page. I'll help you with deleting a payment account in QuickBooks Online (QBO).
If you set this account from the Chart of Accounts, you can remove it from there. I'll guide you how.
- Open your QBO account.
- Click on Accounting at the left pane, then tap on Chart of Accounts.
- Look for the payment account from the list, then select Make inactive under Action.
- Select Yes to confirm the action.
Just in case you want to make an account active again, you can check out this article as your guide: Delete an account on your chart of accounts in QuickBooks Online.
On the other hand, if you want to close a QuickBooks Payments account, you can open this link as your reference: Cancel your QuickBooks Payments subscription.
If you have any other questions about deleting a payment account, please let me know by adding a comment below. I'm always here to help. Have a good one!