Microsoft 365 for a five-person business: what you need and what you don’t

Microsoft 365 pricing pages are designed to make you feel like you’re missing something. For a business with around five people, the honest answer is that you need less than the page wants to sell you — but you do need to pick the right starting plan, because switching later means migrating mailboxes and re-training everyone on where their files live.

What you actually need

• A proper email address on your own domain (you@yourcompany.com), with Outlook and shared calendars.
• OneDrive for each person’s individual files, set to sync automatically so nothing lives only on one laptop.
• SharePoint (bundled in, though most people never realize it) for files the whole team needs — this is what should hold client folders and shared documents, not someone’s personal OneDrive with five people added as collaborators.
• Teams, if you communicate as a group at all, which most five-person businesses do even if they think of it as “just texting each other.”
• The desktop apps — real Word, Excel and PowerPoint installed on each machine, not just the web versions, if anyone does serious document work.

Which plan actually covers that

Microsoft 365 Business Standard covers everything above for most five-person teams: business email, the full desktop Office apps, OneDrive, SharePoint and Teams, all under one per-user monthly price. It’s the plan we set up for the large majority of small businesses this size.

Business Basic is cheaper and gives you the email and web-only apps, but not the installed desktop versions of Word/Excel/PowerPoint — fine if everyone is genuinely comfortable in a browser, a real limitation if anyone does heavy document or spreadsheet work.

Business Premium adds device management and stronger security controls (remote wipe on a lost laptop, more control over who can access what from where). Worth it if you’re handling sensitive client data or financial information; unnecessary overhead if you’re not.

What you probably don’t need yet

• Enterprise plans (E3/E5). These are built for organizations with dedicated IT staff and hundreds of users. At five people, you’ll pay more for controls nobody’s managing.
• A dedicated on-premises server. SharePoint and OneDrive replace what a server used to do for a business this size, without the hardware to maintain.
• Separate backup software, immediately. Microsoft 365 keeps deleted-file history and version history built in, which covers most everyday “I deleted the wrong thing” situations. A genuinely separate backup becomes worth adding once you’re storing anything you truly cannot afford to lose — financial records, signed contracts — as a second layer, not a replacement for good file organization.

The part people get wrong: file organization, not the plan

The single most common problem we see in small offices isn’t the wrong Microsoft 365 plan — it’s that nobody agreed where files live before everyone started saving things wherever was convenient. Client contracts in one person’s OneDrive, a shared spreadsheet emailed back and forth as attachments, three different “final” versions of the same document. Decide on a simple SharePoint folder structure on day one (by client, or by project, whichever matches how you actually work) and have everyone save there from the start. It’s a ten-minute conversation that saves months of “wait, which version is current?”

Setting it up correctly the first time

The technical setup — connecting your domain, migrating any existing email, setting permissions on shared folders so the right people see the right things — is where most of the actual work is, and it’s easy to get permissions wrong in a way that either locks people out of things they need or, worse, gives everyone access to things they shouldn’t see. This is part of our small business IT support for Upper West Side and Manhattan businesses, set up right the first time rather than patched together as problems come up.