Pay for an AI seat only for people who use AI for work most days and regularly hit the limits of what's already included in your Microsoft 365 or Google Workspace plan. Anyone who uses AI occasionally, including with customer information, should use that included AI under their work account instead of a personal login. Everyone else needs nothing.
That rule usually shrinks the seat list to two or three names in a team of eight to ten, and it moves the rest of the team off personal accounts, which matters more than the money. Start with what you're probably already paying for, then run a three-question test for each person and price the result using the September 2026 list prices and the florist example further down.
Start with the AI you already pay for
Before buying any new seat, check your office suite. Two of the most common ones now include AI at no extra cost.
- Microsoft 365 business plans (Business Basic $7, Business Standard $14 and Business Premium $22 per user per month on annual commitment) include Copilot Chat, a web-grounded AI assistant. When staff sign in with their work account, Microsoft applies its enterprise data protection, and prompts aren't used to train its models.
- Google Workspace business plans (about $7, $14 and $22 per user per month on an annual plan for Starter, Standard and Plus) include Gemini: in Gmail plus the Gemini app on Starter, and across Gmail, Docs, Sheets, Slides, Meet, Drive, Chat and Vids on Standard and above. Business content isn't used to train models by default.
Test the included AI on a real task before deciding it isn't enough. Take an illustrative plumbing merchant's credit controller on Business Standard. In Outlook she asks Copilot Chat, "Which customers did I chase about overdue invoices this month, and which haven't replied?" Copilot Chat in Outlook can search her own mailbox and calendar without a paid licence, so it lists eleven customers and flags four with no reply (spot-check two or three against the inbox before trusting the list). She then uploads the aged-debt spreadsheet and asks for a reminder email for each of the four. That works too, with the minor chore of uploading the file each time. What the included version doesn't do is reason across her whole working world at once, such as last month's Teams call with a customer, the shared drive and the inbox together. She doesn't need that, so no seat.
The catch is that included AI only covers people who have a licence on that plan. A shop-floor team member without a work account doesn't get it, and that's fine: most people in that position don't need AI for their job. If you don't use either suite, the cheapest business-grade starting point is a two-seat team plan, covered below.
The three-question test for each person
Run this for every name on the payroll, including your own. Answer from what they actually do, not what they might do one day.
- Frequency: do they use AI for work on at least three days a week? Occasional use rarely justifies a seat.
- Limits: do they regularly run into what the included AI can't do? Examples: working with long documents or large spreadsheets, needing AI that pulls their own emails, meetings and files together in one answer, running into message caps or slow responses at busy times, or needing a feature such as shared projects.
- Data: does their AI use involve customer, staff or financial information? If yes, they must be on a business-grade option (the included AI under a work account, or a business seat), never a personal free or paid consumer account.
| Answers | What to give them |
|---|---|
| No to all three | Nothing. The included AI is there if they want it. |
| Yes to question 3 only | The included AI under their work account, with a short note on what not to paste in. |
| Yes to 1 and 2 | A standard paid seat. |
| Yes to 1 and 2, and they hit standard-seat limits most weeks | Consider a premium seat, after the check below. |
Job-shares are the edge case the test doesn't settle on its own. Two part-time office administrators at an illustrative dental practice split one role, each working two and a half days. Neither passes question 1 alone, but the role uses AI every day, always with patients' details. Answer the questions for the role, then give each person their own account on whatever the role earns: here, the included AI under both work logins, or two business seats if the role also passes question 2. The two-seat minimum happens to fit a job-share neatly. What you can't do is give them one login between them, for the reasons in the rules at the end.
What each level costs (list prices, September 2026)
| Level | Options | Price per person per month |
|---|---|---|
| Included AI | Copilot Chat in Microsoft 365 business plans; Gemini in Workspace plans | $0 on top of the suite licence |
| Standard business seat | ChatGPT Business Standard; Claude Team Standard | $25 monthly or $20 billed annually; minimum 2 seats on both |
| AI inside your office apps | Microsoft 365 Copilot Business | $21 billed annually ($25.20 billed monthly); promotional $18 on annual billing until 31 Dec 2026 |
| Premium seat | ChatGPT Business Premium; Claude Team Premium | $125 monthly or $100 billed annually |
ChatGPT Business lets you mix standard and premium seats in one workspace. For a closer look at the plans side by side, AI subscription prices compared for small businesses covers the wider market, and Copilot Chat versus Microsoft 365 Copilot explains exactly what the paid Copilot adds to the free one.
Where seats usually land, role by role
Every business is different, so treat this as a starting guess to test with the log below, not a rule.
| Role | Typical starting point | What would change it |
|---|---|---|
| Owner or general manager | Standard seat, if they write a lot of emails, proposals or analysis | Mostly on the phone or shop floor: included AI is enough |
| Sales, proposals, events | Standard seat | Proposals built in a CRM or proposal tool with its own AI |
| Marketing and social media | Standard seat, or the AI inside the design tool they already use | A few posts a week: included AI is enough |
| Bookkeeping and admin | Included AI; Copilot add-on if they live in Excel and Outlook | Heavy spreadsheet analysis every day |
| Customer service | The AI features in your helpdesk or inbox tool, not a chat seat | Long, complex written cases every day |
| Shop floor, workshop, drivers | Nothing | Rarely changes |
Notice the customer-service row. AI built into other software (a helpdesk, a CRM, a booking system) is usually priced per seat or in credits by that vendor, and it's often a better buy than a general chat seat for someone whose job lives in that tool. Count it in the same review so you don't pay twice for overlapping AI.
Run a two-week usage log before you buy
Guesses about who uses AI are usually wrong in both directions. The keenest talker may barely use it; the quiet bookkeeper may use it every day on a personal account you don't know about. Ask everyone who might need a seat to keep this log for ten working days. It takes about a minute a day.
AI USAGE LOG Name: ____________
Day | Used AI? | For what task | Hit a limit? | Client or | Minutes
| (Y/N) | | (what) | staff data? | saved
----+----------+------------------------+--------------+-------------+--------
Mon | | | | |
Tue | | | | |
... | | | | |
Tool used (and whose account): ______________________
The last line is the most revealing. If anyone writes a personal account, move them to a business-grade option before anything else, whatever their usage. Setting up company AI accounts instead of personal logins covers how.
Here is one week of a filled-in log from an illustrative online tea shop's customer-service assistant, whose work account is on Google Workspace Business Starter:
AI USAGE LOG Name: customer service (week 1)
Day | Used AI? | For what task | Hit a limit? | Client or | Minutes
| | | | staff data? | saved
----+----------+--------------------------+------------------+-------------+--------
Mon | Y | 14 "where's my order" | No | Yes: names, | 25
| | replies | | order nos. |
Tue | Y | Rewrote returns page | No | No | 20
Wed | N | | | | 0
Thu | Y | Grouped 40 reviews into | Yes: pasted all | Yes: names | 30
| | themes | 40, reply cut off| in reviews |
Fri | Y | Two complaint replies | No | Yes | 15
Tool used (and whose account): Gemini in Gmail (work) Mon and
Fri; my own free ChatGPT on my phone Tue and Thu, "it was open"Reading it: four days out of five passes question 1; one limit, fixed by pasting the reviews in two batches, doesn't pass question 2; question 3 is a clear yes. So no paid seat yet. The urgent change is that last line again: customer names in a free personal account. The fix is to use the Gemini app under the work login for anything like Thursday's job, then log again in a month.
Worked example: a florist with eight people
Say a florist runs on Microsoft 365 Business Standard for the four people with desk work. The team: the owner, a shop manager, three florists, a delivery driver, a weddings and events coordinator, and a part-time bookkeeper. The figures below are illustrative; the prices are list prices.
Before. The owner, the manager and the events coordinator each pay for a personal ChatGPT Plus subscription at $20 a month and expense it: $60 a month. Wedding clients' names, dates, venues and budgets go into three personal accounts the business doesn't control.
What the two-week log showed.
- Owner: AI on nine of ten days for supplier emails, pricing sums and social captions. Hit message limits twice. Yes to all three questions: standard seat.
- Events coordinator: AI every day for wedding proposals and long client emails, always with client details. Yes to all three: standard seat.
- Shop manager: AI on three days, for the rota and a stock order. No limits hit. Yes to question 3 only: Copilot Chat under her work account.
- Florists and driver: no work use; no work accounts. Nothing.
- Bookkeeper: uses her own firm's software and accounts. Nothing from the florist.
After. ChatGPT Business with two standard seats on annual billing: $40 a month, or $480 a year. The manager uses Copilot Chat, already included in her licence. The total AI bill drops from $60 to $40 a month, and every piece of client information now sits in accounts the business owns, with training on business data off by default.
A different answer would have been right if the owner's main need had been AI that works across her own Outlook email, Excel files and Teams meetings. Then a Microsoft 365 Copilot Business licence for her at $21 a month on annual billing would have fitted better, and the coordinator's needs would have been weighed on their own. The test decides the seat; the brand comes second.
When a premium seat is justified
On ChatGPT Business, a premium seat costs five times a standard one and gives five times the usage; Claude's premium team seat is priced the same way. It's worth it only when all of these are true:
- The person hits standard-seat limits most weeks, not once a month.
- They've been shown how to use it efficiently: starting fresh chats for new tasks, attaching only the files needed, not regenerating the same answer ten times.
- The work they do with it is worth more than $100 to $125 a month in time or output. At $40 an hour of their time, that's about three hours saved a month.
Do the sum on the difference, not the full price. Consider two people at an illustrative marketing agency, both on standard seats billed annually at $20. The copywriter runs into the usage limit by Wednesday most weeks and loses about an hour each time, waiting or redoing the work elsewhere: roughly four hours a month, which at $45 an hour is $180 of time. Moving her to a premium seat at $100 adds $80 a month, so it pays. The account manager hits the limit twice a month and loses half an hour in total, about $22 of time. For him the answer is fresh chats and smaller attachments, not an upgrade.
In most small businesses that's one person at most, often nobody. Standard versus premium AI seats goes into how the usage limits differ.
Rules that stop seats going to waste
No shared logins. It's tempting to buy one seat and pass the password round. OpenAI's Terms of Use state that you "may not share your account credentials or make your account available to anyone else", and other vendors have similar terms. Shared logins also mix everyone's chat history, including client details, into one account.
Mind the two-seat minimum. ChatGPT Business and Claude Team both require at least two seats. If only one person qualifies, the included AI in your office suite or the Copilot add-on may be the better fit.
Price the options when the owner of an illustrative four-person landscape-design studio is the only one who qualifies. Two ChatGPT Business standard seats on annual billing cost $40 a month, one of them unused. A Microsoft 365 Copilot Business licence for the owner alone is $21 a month on annual billing, if the studio is on Microsoft 365 and most of her work lives in Outlook, Word and Teams. An individual plan such as Claude Pro ($17 a month billed annually) or ChatGPT Plus ($20) is cheapest for general writing and design briefs, but it runs on consumer terms, so she must switch off the model-training setting and keep client details out of it until the studio moves to a business plan. Here the studio is on Microsoft 365, so the Copilot licence wins; the two-seat plan becomes the right answer the day a second designer passes the test.
Check the terms before billing annually. Annual billing saves $5 a seat a month on the standard plans, but check how the vendor handles removing a seat before renewal. You may keep paying for it until the term ends. Here is how that catches people, as an illustration: a small recruitment agency buys six standard seats on annual billing in January for a new sales push. Two consultants leave in April. If the plan bills those seats to the end of the term, that's two seats at $20 for nine more months, $360 for accounts nobody can use. Buying the four seats you're sure of annually and adding the uncertain ones monthly at $25 would have cost a little more per seat and much less in total.
Review seats every quarter. Put 15 minutes in the diary. Remove seats from anyone who has left, and from anyone who hasn't used theirs in a month. Reassign rather than add. On Microsoft 365, the Copilot usage report in the admin centre shows active users over the last 7, 28, 90 or 180 days; other vendors' admin pages show similar figures. A review note from an illustrative kitchen-fitting firm with five Copilot Business licences might read:
SEAT REVIEW, end of September Licences: 5 x $21 = $105/month
Owner active 26 of 28 days keep
Designer active 22 of 28 days keep
Sales lead active 3 of 28 days remove; Copilot Chat covers it
Office manager active 19 of 28 days keep
Surveyor (left) still assigned remove today
Result: 3 licences, $63/month from renewal (annual commitment),
saving $42/month, $504/year.
Next review: end of DecemberThe sales lead is the usual surprise. He asked loudest for a licence in the spring, and his few uses were short drafts that the included Copilot Chat handles just as well. Removing it isn't a judgement on him; it moves $21 a month to where it earns something.
Remove access the day someone leaves. A seat for a departed employee is both wasted money and an open door to your client history.
If your team has grown and you're wondering whether to move from personal accounts to a business plan at all, ChatGPT Plus versus ChatGPT Business compares the two directly.
Seat questions that come up after the first review
Should we just pay for staff's personal ChatGPT Plus subscriptions?
It's a common shortcut and a poor one. A personal plan belongs to the employee, so the chat history and any files leave when they do, you have no admin control, and consumer plans can use chats for model training unless the user switches that off. For the same or less money, a business plan keeps the account, the history and the settings with your business.
Do seasonal or temporary staff need an AI seat?
Rarely. If they have a work account on your Microsoft 365 or Google Workspace plan, the AI included there usually covers what a temporary role needs. Give a paid seat only if the role is mainly writing or analysis and they'll use it daily, and put a removal date in the diary the day you add it.
Is it worth buying seats for everyone to encourage adoption?
Usually not. Seats for people who don't yet have a use for AI tend to sit unopened, and the unused spend makes AI look like a waste of money. Better to show two or three people how it helps with a specific task, let them prove it, and add seats as real use appears. Adoption follows useful tasks, not licences.
Further reads
- What Gemini in Google Workspace Includes on Each Business Plan — Exactly which Gemini features each Workspace plan includes.
- Staff Offboarding Checklist for AI Tools and Shared Accounts — Reclaim seats and data when someone leaves.
- Free AI Tools vs Paid Plans: What a Small Business Should Pay For — Where free tools are enough and where they fall short.
- Is Claude Team Worth It for a Small Business? — The case for and against Claude's team plan.
- When Does a Shared ChatGPT Plan Stop Being Enough for Your Team? — Signs a shared plan has stopped fitting your team.
- How to Get Your Staff to Actually Use AI Tools — How to get real use from the seats you do buy.
- How Much Does AI Cost a Small Business in 2026? — Itemised 2026 AI budgets for a sole trader, a six-person office and a 20-person firm, with the charges that grow after month three.
- Per-Seat SaaS Fees vs One Custom Tool: Five-Year Costs Compared — Five-year costs of per-seat software against a custom AI tool, year by year, with a break-even seat count and the upkeep costs quotes leave out.
- How to Get Started With AI in Your Small Business: First 7 Steps — Seven steps that take about a month, from a five-day time log to a keep-or-drop decision, with a yoga studio's numbers at each stage.
- How Many AI Tools Does a Small Business Actually Need? — Why most small firms need two or three AI tools, how to spot paying twice for one job, and three businesses' stacks with monthly costs.
- Is AI Worth It for a Small Business? How to Work Out Your Answer — A three-number test for whether AI pays in your business, a break-even table, the costs the quick maths misses, and a two-week trial to settle it.
- AI KPIs for Small Businesses: 12 Metrics Worth Tracking — Twelve AI metrics explained with how to measure each, an example and how it misleads, plus a guide to choosing yours and a one-screen monthly sheet.
- How to Review an AI Tool After 90 Days: Keep, Fix or Cancel — An evidence pack, a ten-point scoring sheet, a worked split verdict for four Copilot seats and a checklist for cancelling without loose ends.
- AI Tool Approval Process: How Staff Request a New AI Tool — The request form staff fill in, the checklist the reviewer works through, and the three replies, so new AI tools get approved in days, not months.
- How Much Should a Small Business Budget for AI? — Itemised AI budget lines, three budgets by team size, a ceiling formula based on hours saved, and a kitchen fitter's first year month by month.
- How to Audit Your AI Subscriptions and Cut Wasted Spend — Find every AI charge, check real usage in each tool's admin reports, cut overlaps, and time changes to seat-reduction rules, with an architect-practice example.
- AI Tools and AI Development: The Complete 2026 Guide — the AI hub, including every tutorial in the AI-for-business series.
Sources: OpenAI ChatGPT Business pricing and Terms of Use; Anthropic Claude pricing; Microsoft 365 Copilot pricing page, Copilot Chat data-protection documentation and Microsoft Learn overview of Copilot Chat; Google Workspace plan pages (checked September 2026).