As Google moves to a new billing system over the course of 2016, you might see adjustments on your Billing History page.
This might happen because, as we transition our billing system, your account balance is carried from the old billing system to the new billing system via a pair of adjustments: a credit to close out the balance on the old system, and a debit to create the balance in the new system. This is only a balance transfer. There is no change to any payments you made in the past, nor to what you owe.
These credits and debits have no impact on taxes you owe or have already paid. In addition, the documents or displayed information for these credits and debits are not valid tax documents. Please use your existing invoices for any of your tax filings.
If you have questions about other adjustments in your account, see View your cost and payment history.
No action is required from you, unless you have a payment reconciliation request. For information about payment reconciliation requests, please read the Payment Reconciliation FAQ.
If you still have questions or need more information, send us an email at google-billing3@google.com.