To match a third-party bank deposit with an invoice in QuickBooks Online, edit the deposit and set "Received From" to the customer and "Account" to Accounts Receivable. Then go to "Receive Payment," select the customer and invoice, and apply the deposit as a credit. Record payments to Undeposited Funds for grouped deposits, then use "Make Deposit" to group them, and match in the bank feed. This keeps your A/R and bank records accurate.