Google Ads uses average daily budgets—if you’re working with a monthly budget, just divide that figure by 30.4 (the average number of days in a month). Google Ads aims to show your ads until your average daily budget is met (except in cases of overdelivery), and you pay only when someone clicks your ad. Learn more about charges and your average daily budget
- Navigate to "Campaigns" from the Home screen or navigation menu .
- Tap the campaign whose budget you want to change.
- Tap the campaign's name.
- Tap the current budget.
- Enter a new amount.
- Tap the checkmark .