Get paid by linking AdSense to your YouTube account
In order to earn money from your monetized videos, see your earnings in YouTube Analytics, and be paid once you reach the payment threshold, you need to associate an approved AdSense account with your YouTube account. You can create a new AdSense account or associate an existing one.
Note: If you want to monetize multiple YouTube channels, you don't need to open a new AdSense account. You can monetize more than one YouTube channel with the same AdSense account. Just follow the instructions below to add the channels to an approved AdSense account.
It's against AdSense's Terms and Conditions to create a duplicate account. In order to associate an AdSense account, your YouTube account cannot be disabled for monetization.
There are four ways to associate an AdSense account with your YouTube account:
If you already have an approved AdSense account
Go to the Monetization page. Get there by clicking your icon in the top right > Creator Studio. Then, in the left menu, click Channel > Monetization.
Go to the "How will I be paid?" section.
From the AdSense Association page, follow the "next" step to be directed to AdSense.
At the bottom of the page, select the option Yes, proceed to Google account sign in to choose the Google Account you want to use.
Enter the password for your Google Account.
Accept the association and you'll be redirected back to YouTube.
Once your account is activated, you'll see a message to inform you that your AdSense account has been associated in your YouTube account. Note that it may take up to 48 hours for the association to be fully active.
If you've never created an AdSense account before
Go to the Monetization page. Get there by clicking your icon in the top right > Creator Studio. Then, in the left menu, click Channel > Monetization.
Go to the "How will I be paid?" section.
From the AdSense Association page, follow the "next" step to be directed to AdSense.
Select the option at the bottom of the page to choose the Google Account you want to use.
Enter the password for your Google Account.
Accept the Adsense association.
Provide your contact information and submit your AdSense application.
You'll be redirected back to YouTube and will see a message saying that your AdSense application has been received.
Adsense will update you by mail once your AdSense account is approved. Your AdSense ID will be updated on the AdSense Association page. Note that it may take up to 48 hours for the association to be fully active.
If you want to review or change your AdSense association
Go to the Monetization page. Get there by clicking your icon in the top right > Creator Studio. Then, in the left menu, click Channel > Monetization.
Go to "Review or change AdSense association."
From the AdSense Association page, click Change.
At the bottom of the page, select Yes, proceed to Google account sign in to choose the Google Account you want to use.
Accept the association and you'll be redirected back to YouTube.
Your AdSense Publisher ID will be updated on the AdSense Association page.
If you have access to the YouTube content management system or you use Content ID
To associate an AdSense account with your content owner account:
Access the Settings Overview page for your YouTube content owner
.
In the AdSense section of the page, click the Edit icon .
Click Continue to AdSense to be redirected to AdSense.
Select the Google Account you want to use to sign in to AdSense. If you're already an AdSense publisher, you must sign in with the Google Account that you use to access your AdSense account.
Enter the password for your Google Account if prompted.
Confirm the YouTube channel you're associating the AdSense account with, and choose the primary language for the channel. Although you select one YouTube channel to complete the AdSense association, YouTube will serve ads on all channels linked to your content owner.
Click Accept Association and provide your billing information if prompted.
Once you've completed this process, you'll be redirected back to YouTube. You might get an email from AdSense with an update. Learn more about AdSense's application review waiting times.
Source Google Support