Google makes it easy to switch between multiple Google accounts. One of those accounts is designated as your default Google account, which is typically the account you signed into first (according to Google).

Google automatically uses your default Google Account when you use Google services like Search, Gmail, YouTube, Drive, Photos, and more. If your default Google Account isn't what you want, you'll need to switch to the correct account every time you access any of these services through a web browser.

You may want to change your default Google Account if:

The only way to change your default Google Account is to sign out of all of your Google Accounts, and then sign back in to the primary Google Account that you want to make your default before signing in to any additional Google Accounts. Follow these steps to make sure your default Google Account has been changed to the correct account.