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Perpetual prices come live from our catalogue. The Microsoft 365 figure is the one you enter, because plan pricing varies by plan and reseller.
Free tool
Microsoft 365 vs One-Time Purchase Calculator
Compare a Microsoft 365 subscription against a one-off perpetual licence.
About this tool
A subscription costs a little every month; a perpetual licence costs once and keeps working. This calculator puts the two side by side. Enter how many people need Office and how many years you expect to use it, add the monthly subscription price you have been quoted, and pick a perpetual edition — the prices for our licences come live from the catalogue, never from a hardcoded table.
How to use the Microsoft 365 vs One-Time Purchase Calculator
- Enter the number of users or PCs you need to cover.
- Enter how many years you expect to keep using the software.
- Enter the Microsoft 365 price per user per month you have been quoted.
- Pick the perpetual Office edition you would buy instead.
- Read the totals and the crossover year — the point where the subscription overtakes the one-off purchase.
Frequently asked questions
- Where do the perpetual prices come from?
- Straight from our live catalogue at the moment you load the page, in your market's currency. Nothing is hardcoded.
- Why do I have to type the subscription price?
- Microsoft 365 plan prices change and vary by plan, region and reseller. Rather than quote a figure that might be wrong, we use the price you have actually been quoted.
- What does the crossover year mean?
- It is the first year in which the cumulative subscription spend exceeds the one-off cost of the perpetual licences.
- What does a subscription give me that a perpetual licence does not?
- Ongoing feature updates, cloud storage and the right to move between versions. A perpetual licence stays on the version you bought and receives security fixes until that version's end-of-support date.