Pay as you go means exactly that: no subscription, no minimum, use nothing and pay nothing. You put a card on file and are charged for the candidates whose results actually unlock.
The current rate per candidate is on the plans page and on billing and usage.

How pay as you go works
- A candidate completes a test.
- The result unlocks for your organisation, shortly afterwards.
- If that is the first result unlocked for that candidate, and your free allowance and prepaid balance are both used up, the candidate is counted as a pay-as-you-go candidate.
- Usage is invoiced at the end of the month, in arrears, for what actually unlocked.
You are never charged in advance and you are never charged for a month you did not use.
Your pay-as-you-go rate
The rate is per candidate and is fixed for your organisation. It is shown on your billing page. Use that number rather than one you remember from a conversation, and take your total from your invoice rather than from arithmetic.
It applies only after free and prepaid
Free results first, then any prepaid balance, then pay as you go. You cannot be charged while either of the first two has anything left in it. See how pricing works.
If you have no card saved
Results do not unlock automatically. They wait, and the score shows as Locked. Nothing is lost and nothing expires. Add a card, or buy a pack, and the waiting results are released. See unlock results.
This is a safe default rather than a punishment: an account with no card cannot run up a bill it did not expect.
Mixing pay as you go with packs
They work together. A pack covers most of your hiring, and pay as you go covers the overflow without you having to notice. If you would rather it never overflowed, do not save a card and top up deliberately instead.
Stopping pay as you go
Remove your card. There is nothing to cancel, because there is no subscription. Results then wait instead of unlocking, and everything already unlocked stays readable. See add or change your card.