The daily budget is the amount you are willing to spend on a campaign each day.
The daily budget amount is averaged over the course of a calendar month. On any given day you could spend less than your daily budget, or up to 10% more than your average daily budget. This system allows you to benefit from high traffic days.
At the end of the month you will not spend more than the daily budget you’ve set, multiplied by the number of days in that month. Your invoice will be adjusted for any over-delivery, so that you will not be charged for any amount in excess of your monthly charging limit.
We'll notify you when your campaign reaches its daily budget.
For example, if your budget is £100 and you receive £90 worth of clicks on the first day, you could receive up to £110 worth of clicks on the second day. This would bring your total spend over two days to £200, which averages to £100 per day.
You can change your daily budget at any time and the adjustments will take effect immediately in your campaign. From the Manage Advertising view, click the budget amount in the Budget column and enter a new amount. You can also change the daily budget by clicking the campaign name and selecting Campaign Settings.
If you change your budget multiple times a day, your maximum campaign spend will be the highest budget in effect for that day. If you reduce your daily budget and your campaign spend is less than your new budget, we will enforce the new budget for that day. If you reduce your daily budget and you’ve already exceeded the new budget, your spending will be capped, and the new budget will take effect the next day. For example, if you change your daily budget from £100 to £50 at noon, but your campaign has already spent £80 that day, then you will be charged £80. If you make no further changes, then from the next day, your daily budget will be £50.
When you change your daily budget mid-month, campaign spend for the rest of the month will not exceed your new daily budget multiplied by the remaining days in the month. For example, you set a daily budget for your campaign to £50, and as of the 20th of the month, you’ve spent £800 in that month. On the 20th of that month, you change your daily budget to £10. The maximum you’ll be charged for that month, will be £800 (that you spent so far) + £110 (£10/day X 11 days remaining in the month) = £910.
The Sponsored Products daily budget cap is an optional setting that controls how much all of your active Sponsored Products campaigns can spend per day in aggregate. You can access this setting under the Advertising Settings tab in Campaign Manager. If you are not sure what to set for a daily budget across Sponsored Products campaigns, then you can leave this blank and set a separate budget for each campaign.
You also have the option to use a lifetime budget for Sponsored Brands campaigns. You can't switch between a daily budget and a lifetime budget after you have selected one when setting up a campaign. To change your budgeting method for a Sponsored Brand, copy your campaign and create a new one.