If you made a recent purchase that qualifies you to receive a credit in GoogleŽ AdWords. The promotional credit must be applied to a NEW AdWords account within 15 days of creating the account and is valid only for NEW Google AdWords customers with assisted signup accounts ("Jumpstart Accounts") or self-managed signup.
NOTE:Promotional Google AdWords credits are limited to one per customer and will be available in your account within 48 hours of your qualifying product purchase.
To Use Your Promotional Google AdWords Credit
Note: Advertisers, meaning you, will be charged for advertising that exceeds the promotional credit. You will need to suspend your ads if you do not want to receive additional charges beyond the free credit amount.