Ah, got it! You're working with a new Business Manager and only seeing the "Add Funds" option instead of automatic billing. That means your ad account is currently set up as a prepaid account (manual payment), not postpaid (automatic billing).
So... can you switch to automatic billing?
Unfortunately, there’s no manual way to change it yourself from prepaid to postpaid inside the ad account settings. Facebook assigns billing types automatically based on things like:
Here's what you can do:
Contact Meta Support
Reach out via Meta Business Help Center and ask if they can convert your account to automatic billing. It’s not guaranteed, but they might help — especially if you're planning to scale ad spend.
Create a New Ad Account (if possible)
If your Business Manager is eligible, try creating a new ad account — sometimes Meta allows one to be prepaid and another to be postpaid based on their internal logic.
Use a credit/debit card to add funds
While not automatic, you can still top up easily, and Facebook will pull from your prepaid balance as you run ads. It works — just not quite as smooth as postpaid.
Quick Tip:
If you're just starting out, prepaid isn’t the end of the world — it gives you a little more control over spend. But if you're running consistent campaigns, postpaid is definitely more convenient.