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.
How to extend your trial subscription of Office 365 for business
Sign in to Office 365 with your work or school account as a global admin. Learn how to sign in.
Select the app launcher icon in the upper-left and choose Admin.
Select Billing, and then click Subscriptions.
Your screen might look like either of the following screenshots:
On the Subscriptions page, select the trial subscription that you want to extend and then select Extend trial.
Complete the steps in the wizard.
When you're ready to buy Office 365, see Buy your trial version of Office 365 for business.