What Is a Google Ads MCC? Manager Accounts for Agencies Explained

A Google Ads MCC (My Client Center), officially called a Manager Account, is a special type of Google Ads account that lets you manage multiple Google Ads accounts from a single dashboard. For marketing agencies, an MCC is the essential infrastructure for managing client campaigns, billing, and — critically — offline conversion tracking at scale.

The Upload Offline Conversions App (TUOCA) is built with MCC-managed agencies in mind. The Agency Dashboard integrates directly with MCCs, allowing agencies to manage offline conversion uploads across all their clients from one interface.

How MCCs Work

Account Hierarchy

MCC (Manager Account)
├── Client Account A (HVAC Company)
│   ├── Search campaigns
│   ├── Display campaigns
│   └── Conversion actions (Import: "Booked Job")
├── Client Account B (Plumbing Company)
│   ├── Search campaigns
│   └── Conversion actions (Import: "Completed Service")
├── Client Account C (Legal Firm)
│   ├── Search campaigns
│   └── Conversion actions (Import: "Signed Retainer")
└── Sub-MCC (Regional Office)
    ├── Client Account D
    └── Client Account E

Key MCC Features

Feature	Benefit
Single login	Access all client accounts without switching credentials
Cross-account reporting	See performance across all clients in one view
Bulk operations	Make changes across multiple accounts simultaneously
User management	Grant team members access to specific accounts
Consolidated billing	Manage billing for all accounts centrally
Cross-account conversion tracking	Share conversion actions across accounts
API access	One authentication for all client accounts

MCCs and Offline Conversion Tracking

Per-Account Conversion Actions

In the standard setup, each client account has its own conversion actions:

Client A: "Booked Job - HVAC" (Import, Primary)
Client B: "Completed Service" (Import, Primary)
Client C: "Signed Retainer" (Import, Primary)

Offline conversions are uploaded to each account individually. The GCLID in each upload belongs to a specific client account — Google routes the conversion to the correct account.

MCC-Level (Cross-Account) Conversion Tracking

MCCs can also use cross-account conversion tracking, where conversion actions are created at the MCC level and shared across all linked accounts:

MCC Level: "Booked Job" (Import, Primary) → Shared across all clients

Benefits:

• One conversion action serves all clients
• Consistent naming and configuration
• Simpler setup for agencies with many clients

Limitations:

• All clients use the same conversion action settings (count, value, window)
• Less flexibility for client-specific configurations
• Requires MCC-level API access for uploads

Which Approach Is Better?

Scenario	Recommendation
Clients in same industry (all HVAC, all plumbing)	MCC-level — shared conversion actions
Diverse client industries	Per-account — each client has custom actions
5-20 clients	Either approach works
50+ clients	MCC-level — simpler at scale

The Agency Scaling Problem

Without an MCC-integrated tool, offline conversion uploads at agency scale become unmanageable:

20 clients × 4 platforms × weekly uploads = 80 manual CSV uploads per week

Each upload requires:

1. Export data from the client’s CRM
2. Format as platform-specific CSV
3. Log into the client’s ad account
4. Upload the CSV
5. Monitor for errors
6. Log the results

At 30 minutes per upload, that’s 40 hours per week — a full-time employee just for data entry.

How TUOCA Solves MCC-Scale Conversion Tracking

TUOCA’s Agency Dashboard is designed for MCC-managed agencies:

One-Time Setup Per Client

1. Authenticate the MCC — TUOCA connects to your MCC via OAuth
2. Select client accounts — Choose which linked accounts to manage
3. Configure relays — Set up data source → destination pipelines for each client
4. Activate — Relays run on schedule, automatically

Cross-Client Management

Feature	Description
Unified dashboard	See upload status, error rates, and conversion counts across all clients
Bulk onboarding	Template-based setup for new clients
Per-client relays	Each client can have different data sources, destinations, and schedules
Error monitoring	Aggregated error reporting across all accounts
Team permissions	Control who can view/edit which client configurations

API Integration

When TUOCA authenticates with your MCC, it gains API access to all linked client accounts. This means:

• One OAuth token for all client accounts
• No per-client authentication — no need to log into each account
• Automatic routing — TUOCA knows which client account each GCLID belongs to
• Cross-account reporting — See upload performance across all clients

MCC Best Practices for Offline Conversions

1. Use consistent naming — Standardize conversion action names across clients (“Booked Job” everywhere, not “Booked Job” for one and “Job_Booked” for another)
2. Separate Primary and Secondary actions — Use Primary for revenue events, Secondary for observation
3. Enable Enhanced Conversions at MCC level — The ECL setting can be enabled for all linked accounts
4. Monitor per-client match rates — Some clients may have data quality issues affecting match rates
5. Use TUOCA’s Agency tier — Purpose-built for MCC-scale management with automated uploads, error monitoring, and cross-client reporting

Creating an MCC

If you don’t have an MCC yet:

1. Go to ads.google.com/home/tools/manager-accounts/
2. Click Create a manager account
3. Enter your business name and email
4. Select Manage other people’s accounts (for agencies)
5. Link existing client accounts or create new ones

Next Steps

1. Create or verify your MCC — Ensure all client accounts are linked
2. Standardize conversion actions — Create consistent Import actions across clients
3. Set up TUOCA’s Agency tier — Connect your MCC and configure per-client relays
4. Read the Agency solution page — Marketing Agencies
5. Explore the Agency Dashboard — Agency Dashboard