1. How Do Automatic Payments Work?
After changing your
account to automatic
payments, you will no
longer receive one bill at
the end of the month.
Instead, you will be
charged either because you've accrued a
certain amount of costs,
known as your billing
threshold, or 30 days
after your last automatic
charge. 
Your payment threshold
is initially set at a
default amount. Each time
your account hits its
threshold before the
30-day billing cycle, your
threshold increases.
The threshold amount is typically €1,000 but this varies per client so best to check in with your client manager.

The amount charged
might be slightly over
the threshold if your
account accrues costs
quickly.
2. View / Download Invoices
2. On the left side, select Billing


Charges are the transactions that occur every time your payment threshold is reached and will most likely take place multiple times a month, depending on your threshold. If your threshold is not reached within the month, a charge will take place every 30 days. On invoices the transactions amount over an entire calendar month is collected. One invoice is made per month, and it becomes visible in your Google Ads Account around the 5th day of the following month.
Read the following articles, to learn more about Charges & Invoices from Google Ads and Automatic Payment.