[Setting] Bidding and budget [Learn more] Setting your bid and budget [Description] 
Choose to manually set your bids for clicks on your ads or let AdWords do it for you. Depending on your campaign type, you may see additional bidding options to choose from. Your bid strategy controls how you pay for users to interact with your ads.Your default bid is the most you’ll pay per click for ads in an ad group. Your budget is the average amount you’re comfortable spending each day on your campaign. The budget you choose is entirely up to you, and you can adjust it at any time.