Google Ads Manager Accounts (MCC) vs. Incogniton Browser Profiles

If your agency runs paid search, a Google Ads manager account is probably the first tool you set up. It lets you see and manage many client accounts from one login, and it is free.

So why do some agencies also use browser profiles? 

Because a manager account solves access to ad accounts, but not everything around them. Managing Google Ads for multiple clients involves more than switching between ad accounts. Agencies also need to manage staff access, handle standalone Google logins, work across other Google products, and keep client environments separate. 

In this guide, we explain what an MCC account does well, where it stops, and when a Google Ads agency setup benefits from both.

What a Google Ads Manager Account Does

A Google Ads Manager Account, commonly called an MCC account, is designed to help agencies manage multiple Google Ads accounts from a single dashboard. Instead of signing in and out of individual client accounts, your team can access linked accounts, monitor performance, and manage campaigns from one place.

An MCC account simplifies several parts of an agency's daily operations, particularly when it comes to managing multiple clients and their teams. Its main benefits include:

Centralised access to multiple Google Ads accounts

You can switch between clients, view performance across accounts, and build reports that cover your entire portfolio. For an agency managing dozens of advertisers, this simplifies daily campaign management.

Team access management

You can give team members access to the manager account rather than adding them individually to every linked client account. When someone leaves, you can revoke their access centrally.

Granular permission levels

Google offers several access levels: Email-only, Billing, Read-only, Standard, and Admin. These determine what each user can do, from viewing reports to managing campaigns and changing account permissions. Admin users can also review information such as users' authentication methods and last login times.

High account limits

According to Google's manager account limits, a manager account can link to a maximum of 85,000 non-manager accounts. However, the number of active accounts depends on the account's highest monthly spend over the previous 12 months. For example, the limit is 50 active accounts if the highest monthly spend was below $10,000, and 2,500 if it was between $10,000 and $500,000.

Where a Google Ads Manager Account Falls Short

An MCC account solves a specific problem: managing access to multiple Google Ads accounts. It does not replace the Google identities, browser sessions, and other tools involved in running an agency.

There are several situations where its capabilities stop being enough.

• Managing the underlying Google logins: Team members still need individual Google accounts to access the MCC. If your agency shares one Google login among several employees, the manager account does not solve the resulting password-sharing and security problems.
• Accessing other Google products: Merchant Center, Google Analytics 4, Tag Manager, YouTube, and Business Profile have their own permission systems. An MCC does not automatically give your team access to these products, particularly when clients use separate Google accounts to manage them.
• Handling standalone client accounts: Not every client will link their account to your MCC. Some may prefer to give your agency direct login access, particularly during a trial engagement or when their account structure is not set up for manager access.
• Checking websites and search results by location: An MCC does not change your browser's apparent location. Although Google Ads has an Ad Preview and Diagnosis tool for checking ads in different locations, agencies may also need to inspect landing pages, local search results, and other parts of the customer experience from a particular market.
• Separating internal and client work: Your agency may also operate its own advertising accounts, test environments, and training accounts. An MCC organises linked ad accounts, but it does not isolate the browser sessions used to access them.

These limitations do not make MCC less useful. They simply show that account management and browser management are two different operational needs.

How Incogniton Browser Profiles Fill the Gaps

Incogniton is an anti-detect browser that lets users create separate browser profiles. Each profile has its own cookies, cache, browsing history, and browser fingerprint. You can also configure a separate proxy for each profile.

For an agency, this means creating a dedicated browser environment for each client or Google identity. Your team can keep its MCC login in one profile, a client's standalone Merchant Center login in another, and internal agency accounts in separate profiles.

This does not replace the manager account. Instead, Incogniton provides an additional layer of organisation and separation for the browser sessions your team uses.

Separate sessions for each Google identity

An agency can create a dedicated Incogniton profile for each Google identity it manages. Each profile retains its own cookies and browsing data, so sessions remain separate.

For example, your MCC login can sit in one profile, while a client's standalone Google account used for Merchant Center or YouTube sits in another. This reduces the risk of accidentally using the wrong account or mixing up sessions when switching between clients.

Consistent browsing locations

You can assign a dedicated proxy to each profile so that it consistently connects through the same location. This is useful when different team members need to access the same client environment from different networks.

However, a consistent proxy does not guarantee that Google will stop requesting additional verification. Google may still trigger security checks based on other account and login signals.

Shared sessions without sharing passwords

When a client gives your agency direct login access instead of linking an account to your MCC, an administrator can sign in to the account inside a dedicated profile and share access through Incogniton's team management feature.

Authorised teammates can then use the existing browser session without needing to know or exchange the account password. This is particularly useful for agencies with remote teams and multiple people working on the same client account.

Regional checks from the right market

By assigning a proxy in the client's target market, your team can use a browser profile to inspect websites, landing pages, and local search results from that region.

This is useful for understanding how a website appears to visitors in a particular location. It does not guarantee that Google will serve the same ads or search results to every user in that market, but it gives your team another way to conduct location-specific checks.

Google Ads Manager Accounts (MCC) vs. Incogniton Browser Profiles: Which Setup Does Your Agency Need?

The choice depends on how your agency manages client accounts and how many people need access to them.

You need an MCC account when you want to:

1. Manage multiple client Google Ads accounts from one dashboard.
2. Give team members centralised access with different permission levels.
3. Monitor campaign performance across clients.
4. Simplify account administration and reporting.

You need Incogniton when you want to:

1. Keep different Google identities and client sessions separate.
2. Manage standalone client logins outside your MCC.
3. Share browser sessions with teammates without distributing passwords.
4. Maintain consistent browsing locations for specific client accounts.
5. Separate internal agency accounts, test accounts, and client environments.

The two tools are complementary. The MCC handles access and administration within Google Ads, while Incogniton organises the browser environments used to access client accounts and other platforms.

Agency situation	MCC alone	MCC + browser profiles
All clients link their Google Ads accounts to your MCC	Usually enough	Useful for additional session separation
Some clients provide direct Google logins	Does not manage those sessions	Recommended
You manage Merchant Center, GA4, or YouTube through separate client logins	Does not cover browser session management	Recommended
Remote team members access shared client environments	Manages MCC permissions, but not browser sessions	Useful for consistent, isolated sessions
You need to inspect websites and search results by region	Limited to Google's available tools	Useful for location-specific browser checks

Common MCC Mistakes Agencies Make

Even with a manager account, poor access practices can create security and operational problems. Here are some mistakes agencies should avoid.

• Sharing one MCC login across the team: This defeats Google's user management system. Each employee should use their own Google account with an appropriate permission level.
• Owning client ad accounts: When possible, let clients own their Google Ads accounts and link them to your MCC. This makes it easier for them to retain control if they change agencies.
• Giving everyone Admin access: Admin users can change permissions and unlink accounts. Most campaign managers need Standard access, while reporting staff may only need Read-only access.
• Ignoring active account limits: The number of active accounts your MCC can manage depends on your spend history. Review linked accounts regularly and remove those you no longer manage.
• Skipping two-step verification: A compromised staff Google account can put every account accessible through that identity at risk. Require two-step verification for all accounts with MCC access.
• Failing to review user access: Regularly check who has access to your manager account. Remove former employees and anyone who no longer needs access.

Conclusion

A Google Ads Manager Account is the foundation of an agency's paid search operations. It centralises access to client ad accounts and makes campaign management easier as the business grows.

But it does not organise every Google login or browser session your team uses. Incogniton fills that gap with isolated browser profiles, session sharing, and dedicated proxies. If your agency needs that additional layer of separation, you can try Incogniton's free plan with 10 browser profiles for two months, without a credit card.