Google Ads MCC Scripts: Cross-Account Management Automation (2026 Guide)

If you manage one account, you check it daily. If you manage 50 accounts (as an Agency or Holding Company), checking them daily is physically impossible. You need MCC Scripts.

These scripts run at the Manager Level, iterate through every child account, and aggregate the data into a single Master Report (Google Sheet).

In this "Mega-Authority" guide, we cover:

1. The Hierarchy: MCC vs Single Account logic.
2. The "Master Dashboard" Script: Budget pacing for 100 clients.
3. The "Safety Net" Script: Detecting zero-impression accounts.
4. Implementation: The executeInParallel function.

Part 1: Theory - The Iterator

Single Account Script: AdsApp.keywords().get()

MCC Script: AdsManagerApp.accounts().get() while (accountIterator.hasNext()) { select(account); ... }

The MCC script opens Account 1, runs logic, saves data. Opens Account 2, runs logic, saves data.

Part 2: The "Master Budget Pacing" Dashboard

The #1 anxiety for agencies: Overspending a client's budget. You need a single Google Sheet that lists:

• Client Name
• Budget
• Spend So Far
• Pacing % (Heatmap)

The Logic:

1. Script loops through all accounts with label "Active".
2. Fetches cost for THIS_MONTH.
3. Fetches budget amount.
4. Calculates %.
5. Pushes row to sheet.

Benefit: You look at ONE screen in the morning. If rows are Green, drink coffee. If Red, take action.

Part 3: The "Zero Impression" Alarm

Sometimes, credit cards fail. Or a client changes permissions. Or ads get disapproved. The account stops serving. If you don't notice for 3 days, you get fired.

The Script:

1. Check impressions for YESTERDAY.
2. If impressions == 0 AND AccountStatus == ENABLED.
3. Email Alert: "CRITICAL: Account X has 0 impressions."

Part 4: Implementation - Setting it Up

1. Login to your MCC.
2. Tools -> Bulk Actions -> Scripts. (Note: Must be at MCC level).
3. New Script.
4. Code: Use AdsManagerApp.accounts() selector.
5. Authorize: Requires OAuth for all child accounts.
6. Schedule: Hourly.

Part 5: Summary & Checklist

Your Action Plan:

1. Install the "MCC Budget Pacing" script (Search GitHub for "Google Ads MCC Budget Script").
2. Install the "Link Checker MCC" (Check all client links at once).
3. Label your accounts. (Exclude "Cancelled" clients using script filters).
4. Build your morning routing around the Master Sheet, not the Google Ads interface.

Scale your time, not your stress.