The card on file will be charged on the first of each new month to cover any outstanding balances that weren’t paid in a previous threshold payment.
For example, if an account has a $50 threshold and their spend by January 31st is $45, their threshold is not met and they are not charged that month. The account is then charged $45 on February 1st to cover the uncharged balance from January.
How do I know if I received a monthly charge?
Your Billing & Payments page will indicate whether a charge was a threshold or monthly payment, specifically under the Payment Type column. For more information on threshold billing, please see Threshold Billing.
Why did I receive a monthly charge after I paused my campaigns?
Monthly charges account for the previous month's undue balances. You can verify this by viewing your account's "All-Time" spend on the Manage Ads dashboard and compare it to the "All-Time" charges on your Billing & Payments page. If the account's "Current Balance" is $0, the total spend and charges should match.