Meta caps how many ad accounts a given Business Manager can have active at once, with the limit scaling based on verification status, spend history, and account standing — an unverified new Business Manager might be capped at just a handful, while a long-standing, verified agency portfolio can hold hundreds.
This limit is exactly why 'unlimited agency ad accounts' as an agency offering matters operationally: rather than a client's own Business Manager bumping into its cap during a scaling push, the agency provisions additional accounts from its own larger, higher-tier portfolio as needed.
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Private Meta infrastructure for buyers spending $100,000+ a month. Unlimited accounts, our cards, a 24/7 operator line.