Office 2021 is sold as a one-time purchase, which means you pay a single, up-front cost to get Office apps for one computer. One-time purchases are available for both PCs and Macs. However, there are no upgrade options which means if you plan to upgrade to the next major release, you'll have to buy it at full price.
Microsoft 365 is a subscription that includes the most collaborative, up-to-date features in one seamless, integrated experience. Microsoft 365 includes the robust Office desktop apps that you’re familiar with, like Word, PowerPoint, and Excel. You also get extra online storage and cloud-connected features that let you collaborate on files in real time. With a subscription, you'll always have the latest features, fixes, and security updates along with ongoing tech support at no extra cost. You can choose to pay for your subscription on a monthly or yearly basis, and the Microsoft 365 Family plan lets you share your subscription with your family for up to 6 people, and use your apps on multiple PCs, Macs, tablets, and phones.
Microsoft 365 is compatible with PC, Mac, Android, and iOS. See system requirements for compatible versions of your devices, and for other feature requirements.
No. Apps are tailored to work best on each operating system. The apps available for Mac users and the specific features included may be different from those available for PC users. With Microsoft 365, you can be flexible. With your account, you are not limited to exclusively Mac or exclusively PC, so you can transition across devices.
Yes. Documents that you have created belong fully to you. You can choose to store them online on OneDrive or locally on your PC or Mac.
Internet access is required to install and activate all the latest releases of apps and services included in all Microsoft 365 subscription plans. Note that if you are an existing subscriber, you do not need to reinstall or purchase another subscription.
For Microsoft 365 plans, Internet access is also needed to manage your subscription account, for example to install apps on other PCs or to change billing options. Internet access is also required to access documents stored on OneDrive, unless you install the OneDrive desktop app.
You should also connect to the Internet regularly to keep your version of Microsoft 365 up to date and to benefit from automatic upgrades. If you do not connect to the Internet at least every 31 days, your apps will go into reduced functionality mode, which means that you can view or print your documents but cannot edit the documents or create new ones. To reactivate your apps, simply reconnect to the Internet.
You do not need to be connected to the Internet to use Office apps, such as Word, Excel, and PowerPoint, because the apps are fully installed on your computer.
Your Microsoft account is the combination of an email address and password that you use to sign in to services like OneDrive, Xbox LIVE, and Outlook.com. If you use any of these services, you already have a Microsoft account that you can use, or you can create a new account. Learn more about a Microsoft account
As part of signing up for a trial or purchasing Microsoft 365, you will be prompted to sign in with a Microsoft account. You must be signed in with this account to install and manage your Microsoft 365 subscription, or to use some subscription benefits, including OneDrive storage.
You can share Microsoft 365 Family with five other people, for a total of six users. Microsoft 365 Personal can be used by one person.
If you have an active Microsoft 365 Family subscription, you can share it with up to five other people. Each person you share your subscription with can install Microsoft 365 on all their devices and sign in to five devices at the same time.
To add someone to your subscription, visit account.microsoft.com and follow the on-screen instructions to add a user. Each person you add will receive an email with the steps they need to follow. Once they have accepted and completed the steps, their information, including the installs they are using, will appear on their My Account page. You can stop sharing your subscription with someone or remove a device they are using at account.microsoft.com.
Visit this page to learn more about free apps.
Microsoft 365 is compatible with PC, Mac, Android, and iOS
See system requirements for compatible versions of your devices, and for other feature requirements.