What is the twenty-account limit?
Google associates up to twenty Google Ads accounts with a single e-mail address, and a manager account is one of those twenty rather than an exception to them. This is the limit people meet long before any other, and Google itself says that if you manage more than twenty accounts, a manager account is probably the right answer.
The non-solution is a second e-mail address. It gives you twenty more accounts and two sets of sign-ins that do not see each other, which is the problem you were trying to avoid.
How does nesting work?
A manager account can link other manager accounts as well as ordinary ones, so a top manager can sit above sub-managers which sit above client accounts. Ownership is inherited upwards: a manager above the owning manager has the same ownership rights over the account below.
Giving a sub-manager to a team does not wall that team's accounts off from you — and does not wall them off from anyone with admin on the top manager either.
A hierarchy is a convenience for reaching accounts, not a security boundary between them.
Which numbers are real?
One. Twenty accounts per e-mail address, manager accounts included, stated by Google on its own help page. Figures for accounts per manager and for nesting depth circulate widely, are quoted confidently, and do not appear on Google's overview page — which does not make them false, but does mean nobody should plan around them.
| Question | What Google states |
|---|---|
| Accounts per e-mail address | Up to 20, managers included |
| Can a manager hold other managers | yes |
| Accounts per manager account | not stated on the overview page |
| Nesting depth | not stated on the overview page |
| Owners per client account | exactly 1 |
| Managers linked per client account | more than one allowed |
If a number matters to your plan, check it in Google's own help before building on it. Limits change, and the second-hand versions of them change later or never.
How should the hierarchy be laid out?
- One top manager, held by youThis is the account whose e-mail address becomes the single point of failure for everything. Treat it that way.
- A sub-manager per group that should stay separateTeams, clients, buyers. Separation is organisational, not a security guarantee.
- Ownership taken on the accounts that matterLinked is enough to work. Owned is what stops someone else deciding who gets in.
- Admin access on as few accounts as the work allowsStandard covers running campaigns. Admin is for handing accounts over.
Common questions
How many accounts can one manager account hold?
Google's main help page on manager accounts does not state a per-manager cap. The only number it gives is the one most people hit first: up to twenty Google Ads accounts, manager accounts included, per e-mail address. Treat any other figure you read as unverified unless it comes from Google's own help.
How deep can the hierarchy go?
A manager account can link other manager accounts, so hierarchies are possible and normal. Google's overview page does not publish a nesting depth limit. In practice the constraint is organisational rather than technical: every extra layer is another place access can be granted without you noticing.
Running into the twenty?
A ready manager account is $500 and takes the accounts you already have under it.
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