Extend your trial for Office 365 for business
Do you need more time to try out the features of Office 365 for business before buying? If your trial subscription is within 15 days of expiring and the trial hasn't been extended before then you can extend your trial for another 30 day period. You can only do this one time.
Use the admin center (preview) to extend your trial
The preview is available to all Microsoft 365 admins, you can opt in by selecting Try the preview toggle located at the top of the Home page. For more information, see About Microsoft 365 admin center preview.
In the admin center, go to the Billing > Products & services page.
On the Products & services page, find the trial subscription that you want to extend. In the Settings & Actions section, choose Extend trial.
Review the extension information, and if necessary, change your payment method. When you're finished, choose Extend trial.
Use the old admin center to extend your trial
In the admin center, go to the Billing > Subscriptions page.
If you're using Office 365 Germany, go to this Subscriptions page.
If you're using Office 365 operated by 21Vianet, go to this Subscriptions page.
On the Subscriptions page, choose the trial subscription that you want to extend, and then, under the expiration date, choose Extend trial.
Complete the steps in the wizard.
When you're ready to buy, see Buy your trial version of Office 365 for business.