How do I set a max CPC on Google ads?

Instructions

  1. Sign in to your Google Ads account.
  2. Click Campaigns.
  3. Select the campaign you want to edit.
  4. Click Ad groups.
  5. Select the appropriate ad group from the list.
  6. Click the pencil button. in the “Default max. CPC” bid column.
  7. Enter a new amount.
  8. Click Save.

For More Information Please Refer: https://support.google.com/google-ads/answer/2470113?hl=en