Added a subject test today, do I need to take any action?

I just took the test like normal, as if I had signed up for it. Do I have to notify Collegeboard at all that I added a test, or will they just take care of it themselves?

(I know they’ll bill me)

Collegeboard will automatically score the test, and then bill you. No action must be taken by the test taker.

@MrAustere Awesome. Thanks!