A manager account is an advertising account that holds no campaigns of its own. Instead, it sits above other accounts and lets one login view, edit, report on and pay for all of them. Google defines it as an account that "lets you view and manage multiple Google Ads accounts - including other manager accounts - from a single location." It exists because agencies, multinationals and software vendors routinely operate accounts they do not own. In Google's system the manager account was long called MCC, for My Client Center, and the abbreviation survives in everyday use, in Google's own help-page titles and in a short 2021 PPC Land definition of the Google Ads MCC.

How the hierarchy works

The model is a tree. At the top sits a manager account. Beneath it hang client accounts, which may be ordinary advertiser accounts that serve ads or further manager accounts, often called sub-managers. Google's API documentation on account types, last updated on October 14, 2026, gives the canonical example: Manager A has two clients, advertiser B and manager C, and manager C in turn manages advertiser D. A manager is identified in the API by the field customer.manager set to true.

Creating one is a separate act. According to Google's help centre, "a manager account isn't an 'upgrade' of your Google Ads account"; it is a new account with its own 10-digit customer ID. Accounts join the tree through a link request. The manager sends an invitation from a "Link existing account" option, and the link becomes active only once an administrator on the client side accepts. A manager can also create client accounts directly or be granted ownership of one.

The link carries several functions:

  • Single sign-in and cross-account reporting. Users of the manager reach every linked account and can report across them at once.
  • Billing. A manager can attach a payments profile and use monthly invoicing. Google states that "a manager account is required for Ads accounts using monthly invoicing", which makes the manager a financial instrument as well as an administrative one.
  • Shared assets. Some objects can live at manager level. Cross-account bid strategies, launched in February 2021, let a single portfolio bid strategy owned by a manager pool Search and Shopping campaigns from several client accounts, provided they share a currency.

Limits and numbers

The ceilings are set by spend. According to Google's account limits page, any manager can be linked to a maximum of 85,000 non-manager accounts, a figure that counts active, inactive and cancelled accounts. The number of active accounts is tighter and depends on the highest total monthly spend across all client accounts in the previous 12 months:

Highest monthly spend (last 12 months) Active account limit Total limit
Under $10,000 50 85,000
$10,000 to under $500,000 2,500 85,000
Over $500,000 No active limit 85,000

The calculation runs at the top manager, meaning one with no manager above it. A new manager with no spend starts at 50, and once a higher tier is reached the limit does not fall for at least 12 months even if spend drops. Separately, Google allows only 20 accounts, managers included, per email address, one reason agencies route access through a manager.

The API layer

For software, the manager account is the route into client data. A request to the Google Ads API carries an OAuth access token, a developer token and, when an account is reached through a manager, a login-customer-id header holding the manager's customer ID as digits without hyphens. According to Google's call structure documentation, omitting the header in that situation produces a USER_PERMISSION_DENIED error. API access itself was long administered through an API Center page inside the manager, until September 10, 2026, when Google moved Ads API signup and access management into the Google Cloud Console and began retiring the API Center in stages, with no final date given.

Origins and evolution

The concept predates the Google Ads brand by more than a decade. My Client Center was in use by December 6, 2005, when Rohit Dhawan wrote on Google's AdWords API blog that two MCCs, typically an agency's and a developer's, could now link to the same AdWords account. Each link was set to "User Interface & API" or "API Only", and API quota was split between them: the API-only MCC was credited with 100% of spend, the other with 10%. MediaPost reported that it was the central feature of the Google Advertising Professionals programme, whose members had to use an MCC and spend at least $1,000 in 90 days. On October 10, 2006, Google's AdWords blog described the MCC dashboard as showing customer IDs, budgets and spend under "one easy login", with alerts for problems such as declined cards.

The single-agency assumption eroded next. In June 2011 Google introduced "multiple links", which, according to Search Engine Land, let up to five MCCs connect to one AdWords account and removed the UI-versus-API distinction. On June 4, 2015, Zak Stern announced cross-account campaign management, adding a campaigns view that could pause campaigns or change budgets across up to 20 accounts, and with it a change of name: Google said it would "no longer use 'My Client Center' and 'MCC' to refer to AdWords manager accounts." AdWords itself became Google Ads in July 2018, and the manager account kept its name.

Other platforms converged on the same vocabulary. Microsoft Advertising originally called the top-level container a "customer", also known as a customer shell or CID. When it opened account hierarchies to all advertisers in beta, it said those references would change to "manager account" and that every new user would receive one at signup. Microsoft's developer guide still explains that "a Customer is also known as a Manager account" and allows five levels of manager-to-manager links. Its agency model works through client links, which expire if not acted on within 30 days. According to Microsoft's AddClientLinks reference, "there is no set limit to the amount of client accounts that can be linked to an agency", though prepaid accounts cannot be linked. Amazon Ads added nested manager accounts on April 15, 2024, letting advertisers and partners stack manager accounts by operating company, region or business unit, a change PPC Land covered in May 2024.

Why it matters for marketers

The manager account is where commercial control and operational control meet. An agency that holds the manager link can run the campaigns; a client that holds ownership and administrator rights can end the relationship. Those rights decide who keeps the history and conversion data when a contract ends, and under a least-privilege model the manager link is often the widest grant in the system.

That breadth makes managers a policy lever. Since November 2024, Google has been able to penalise agencies whose handling of client accounts breaches its third-party policy, including removal from programmes such as Google Partners and suspension. In June 2025 it went further, exposing individual accounts linked to a non-compliant manager to suspension, with unlinking as the stated remedy. From March 23, 2026, manager accounts with a significant volume of revoked gambling certificates among their clients lose the ability to apply for new ones. Responsibility, in other words, now travels up the tree as well as down.

Limitations and disputes

Three problems recur. The first is security. A manager link is valuable to attackers because it grants reach into many accounts at once. In April 2026 agencies reported fake client inquiries designed to obtain manager account access, one from a domain registered three days earlier; Andrew Goodman said his agency had "seen a steady stream of these over the past 12-18 months."

The second is ownership drift. Links and administrator rights accumulate and are rarely audited. In March 2026 a former agency that had held access to a client's Merchant Center for about six years closed its own account and took the client's with it. Google restored the account within 24 hours. Emmanuel Flossie, founder of FeedArmy, put the principle plainly: "You don't close down an account that you don't own - you disconnect yourself."

The third is friction from the controls meant to fix the first two. In July 2026 Google Ads began requiring a second administrator to approve access removals, with requests expiring after 20 days, leaving accounts with a single administrator unsure how to proceed; PPC Land found no official documentation of the flow.

What it is not

  • Business Manager or business portfolio (Meta). Meta's equivalent container groups ad accounts, Pages and people under a business, but it is an asset and permission wrapper rather than a linked hierarchy of independent ad accounts with their own owners.
  • Account manager. A person, usually at a platform or agency, who looks after a client relationship. Confusion is common because both are often shortened to "manager".
  • Unified or global advertiser account. Amazon's unified advertiser account, in open beta since October 2025, merges product registrations into one advertiser account; consolidated billing then works at both manager and advertiser level, but the two remain distinct tiers.

Recent developments

The autumn of 2026 shifted the manager account's role in Google's developer stack, with API access now governed by Cloud projects rather than developer tokens issued inside a manager. Google's Merchant Center has meanwhile built its own agency layer, which tops out at 1,000 client accounts and has since expanded beyond the US and Canada. As platforms open ad accounts to AI agents, which manager link and access level an automated system inherits has become the newest test of a structure that began as a way to spare agencies from juggling passwords.

Timeline

  • December 6, 2005 - Google's AdWords API blog announces that two MCCs can link to one AdWords account, with "User Interface & API" and "API Only" link types.
  • October 10, 2006 - Google's AdWords blog describes the My Client Center dashboard for managing multiple client accounts under one login.
  • June 2011 - Google introduces "multiple links", allowing up to five MCCs to link to a single AdWords account.
  • June 4, 2015 - Google launches cross-account campaign management and retires the "My Client Center" and "MCC" names in favour of "manager account".
  • July 2018 - AdWords is renamed Google Ads; the manager account name is retained.
  • February 2021 - Cross-account bid strategies owned by manager accounts launch for Search and standard Shopping campaigns.
  • April 15, 2024 - Amazon Ads launches nested manager accounts.
  • November 2024 - Google's updated third-party policy allows penalties and suspensions for agencies managing client accounts.
  • June 6, 2025 - Google policy update makes accounts linked to non-compliant managers subject to suspension.
  • October 2025 - Amazon Ads opens its unified advertiser account in beta, with billing at manager or advertiser level.
  • March 23, 2026 - Google gambling certification rules begin to penalise manager accounts with significant revocations.
  • April 2026 - Agencies report phishing attempts aimed at manager account access via fake client leads.
  • July 2026 - Google Ads requires second-administrator approval for access removals.
  • September 10, 2026 - Google moves Ads API access management from manager accounts to the Google Cloud Console.
  • October 14, 2026 - Google's API account-types documentation last updated, still noting the former MCC name.

Summary

Who: Agencies, in-house teams running many accounts, multinational advertisers and software vendors use manager accounts. Google, Microsoft Advertising and Amazon Ads operate the main implementations, and the client account's administrators decide whether to accept a link.

What: A manager account is a campaign-less account that links to client accounts, including other managers, to provide one login, cross-account reporting, consolidated billing such as monthly invoicing, shared bid strategies and API access via the login-customer-id header.

When: Google's My Client Center was in use by December 2005, was renamed manager account in June 2015, and gained cross-account bid strategies in 2021. Microsoft and Amazon adopted the term later, with Amazon adding nested managers in April 2024. Google moved API access management out of manager accounts on September 10, 2026.

Where: Inside the advertising platforms' interfaces and APIs, at the top of each account tree, with Google limits of 85,000 linked accounts and spend-based active limits of 50 or 2,500.

Why: Advertising is managed at scale by parties who do not own the accounts. The manager account separates operational control from ownership, which makes it efficient for agencies, a target for attackers and, increasingly, a point where platforms enforce policy across many advertisers at once.