[Video](https://www.youtube.com/watch?v=Y-tGrvrlfwQ)
Test accounts let you try out new API implementations or account configurations prior to implementing the changes in your production environment. While production accounts serve ads that require billing and are rendered to users, test accounts appear in the Google Ads UI as cancelled accounts since there is no active billing and they don't render ads to users. Because test and production accounts cannot interact in any way, you cannot use a test account under your existing production manager account. To use test accounts, you need a new account hierarchy, with a test manager account as the root. > [!WARNING] > **Note on Test Account Retention:** > > > Google Ads API test accounts and their associated data are subject to automatic deletion. Any test account that remains inactive (has no API activity or logins) for a continuous period of **one year** will be permanently removed. > > > To prevent unintended deletion, ensure you interact with your test accounts periodically if you want to retain them. ## Why use test accounts? Test accounts don't affect your live ads or charge your account, hence they're a useful way to experiment with the API. Test accounts provide extra benefits during active development. Particularly, test accounts: - Can be set up in a hierarchy and organized just like production accounts. - Can be viewed and manipulated in the Google Ads UI, just like production accounts. - Don't require an approved developer token, so you can start experimenting with the API immediately, even before your application is reviewed or approved. - Can't serve ads or interact with your production accounts in any way. This gives you a safe environment to test code or configuration changes without impacting your serving accounts. - Have the same restrictions, including [rate limits](https://developers.google.com/google-ads/api/docs/productionize/rate-limits), as production accounts. Since test accounts don't have budgets, you might see an error when creating a test sub-account in a manager account. You can safely ignore this error. ## Create test accounts and campaigns
[Video](https://www.youtube.com/watch?v=xm5-iDOhF_8)
The following instructions create a test manager account, a test client account, and a few campaigns to populate the test client account. For a full explanation of these account types, see [Account types](https://developers.google.com/google-ads/api/docs/concepts/account-types). 1. Click the blue button to create a test manager account. If prompted, sign in with a [Google Account](https://www.google.com/account/about/) that isn't linked to your production [Google Ads manager account](https://ads.google.com/home/tools/manager-accounts/). There is also a link to create a new Google Account if you need to do so. [Create a test manager account](https://ads.google.com/nav/selectaccount?sf=mt) 2. While in your test manager account, create a test client account: Click **Accounts \> \> Create new account** and fill out the form. Any client accounts you create from your test manager account are automatically test accounts. 3. Create a few test *campaigns* under the test client account from the Google Ads page. 4. Take note of the **client customer ID** for the new test client account, and save it so you can make API calls later. > [!IMPORTANT] > **Important:** Use the developer token of your *production* manager account when making requests against the *test* manager account. Even if it's not approved yet, the token still works on test accounts, including the ones just created. ## View test accounts To view test accounts in the UI, you can [unhide the accounts](https://support.google.com/google-ads/answer/7519830) by choosing to view cancelled accounts. Test accounts appear with a red label:  If you don't see the red **Test account** label on your Google Ads account page, then the account is a production account. ## Limitations Test accounts are a great option for testing changes before deploying them to production, or developing your application while your developer token has [test account access](https://developers.google.com/google-ads/api/docs/api-policy/access-levels#access-levels). However, there are some limitations to keep in mind. - Because test accounts can't serve ads or interact with your production accounts in any way, serving metrics -- like impressions, conversions, or cost data -- are empty. - Some features cannot be tested with test accounts. This includes bid simulations, conversion uploads, and billing. Other features, including recommendations, have limited capabilities within test accounts because test accounts don't generate serving data. - Test manager account hierarchies can contain [up to 50](https://developers.google.com/google-ads/api/docs/best-practices/system-limits#account) test accounts. - Test accounts generating a high volume of continuous requests may be throttled without notice. Take a look at the [Testing Best Practices](https://developers.google.com/google-ads/api/docs/best-practices/testing#test-accounts-and-production-accounts) page for guidance on working around these limitations.