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This document describes the limits and quotas for the Google Tag Manager API.
Overview
Google Tag Manager is used by millions of sites. To protect the system from
receiving more data than it can handle, and to ensure an equitable
distribution of system resources, certain limits have been put in place. Our
policies are as follows and are subject to change.
Obtaining Quota
You must register your application in the
Google API Console to receive any quota; no
unregistered quota will be allowed. When you register a new application, you
are given a unique client ID to identify each application under that project.
Read the Keys, access, security, and
identity
section of the API Console guide to learn more about how client
IDs identify applications.
General Quota Limits
The following quota limits apply to all requests made to the
Tag Manager API:
10,000 requests per project per day.
0.25 queries per second (QPS) per project.
These quotas are independent of those you can set in the
API Console. If the
you set the project's per-user limit above 0.25 QPS, the
Google Tag Manager quota policy will still take effect and limit per-project
requests to 0.25 QPS.
Exceeding Quota Limits
If quota is exceeded, Google Tag Manager API returns an error for
additional requests: HTTP status code 403 Forbidden and
a message indicating that the specific account has insufficient
quota to proceed.
[null,null,["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eGoogle Tag Manager API usage is subject to limits and quotas to ensure system stability and fair resource allocation.\u003c/p\u003e\n"],["\u003cp\u003eAll applications must be registered in the Google API Console to receive quota and obtain a unique client ID.\u003c/p\u003e\n"],["\u003cp\u003eGeneral quota limits include 10,000 requests per project per day and 0.25 queries per second (QPS) per project.\u003c/p\u003e\n"],["\u003cp\u003eExceeding quota limits results in a \u003ccode\u003e403 Forbidden\u003c/code\u003e error, but higher quotas can be requested through the API Console.\u003c/p\u003e\n"]]],["The Google Tag Manager API enforces quota limits to manage system resources. Every application must be registered in the Google API Console to receive quota. Limits are set at 10,000 requests per project daily and 0.25 queries per second (QPS) per project, enforced independently of console settings. Exceeding quotas results in a `403 Forbidden` error. Daily quotas refresh at midnight PST, and QPS is measured in a 100 second window. An increase in quota can be requested in the API Console.\n"],null,["# Tag Manager API Limits and Quotas\n\nThis document describes the limits and quotas for the Google Tag Manager API.\n\nOverview\n--------\n\nGoogle Tag Manager is used by millions of sites. To protect the system from\nreceiving more data than it can handle, and to ensure an equitable\ndistribution of system resources, certain limits have been put in place. Our\npolicies are as follows and are subject to change.\n\nObtaining Quota\n---------------\n\nYou must register your application in the\n[Google API Console](https://console.cloud.google.com/) to receive any quota; no\nunregistered quota will be allowed. When you register a new application, you\nare given a unique client ID to identify each application under that project.\nRead the [Keys, access, security, and\nidentity](/console/help/using-keys)\nsection of the API Console guide to learn more about how client\nIDs identify applications.\n\n### General Quota Limits\n\nThe following quota limits apply to all requests made to the\n[Tag Manager API](/tag-platform/tag-manager/api/v2):\n\n- 10,000 requests per **project** per day.\n- 0.25 queries per second (QPS) per **project**.\n\nThese quotas are independent of those you can set in the\n[API Console](https://console.cloud.google.com/). If the\nyou set the project's **per-user limit** above 0.25 QPS, the\nGoogle Tag Manager quota policy will still take effect and limit per-project\nrequests to 0.25 QPS.\n| **Note**: Daily quotas refresh at midnight PST. QPS quotas are enforced on a 100 second sliding window (i.e. 25 requests per 100 seconds).\n\nExceeding Quota Limits\n----------------------\n\nIf quota is exceeded, Google Tag Manager API returns an error for\nadditional requests: HTTP status code `403 Forbidden` and\na message indicating that the specific account has insufficient\nquota to proceed.\n| **Note** : You can apply for an increased quota by clicking **Edit Quotas** in the [API Console](https://console.cloud.google.com/) and filling out the *apply for higher quota form* to have your request considered."]]
