Many developers and small businesses turn to Google Cloud Platform (GCP) for scalable, reliable infrastructure, but unexpected bills from free tier overuse remain a top pain point. If you’re relying on GCP Always Free to keep costs at zero, understanding the exact, up-to-date limits is non-negotiable.
GCP’s Always Free tier is often confused with the $300 new user free trial, but it operates very differently. Below, we break down every limit you need to know, common overage mistakes, and how to track your usage to avoid surprise charges.
What Is GCP Always Free?
GCP Always Free is a permanent, no-expiration subset of Google Cloud’s free tier, available to all users with a valid billing account (yes, you still need to add a credit card to activate it, but you won’t be charged if you stay within limits). Unlike the 90-day $300 free trial, these benefits never expire as long as you adhere to the published caps.
Always Free only applies to a curated list of Google Cloud services, and limits are tied to specific regions and usage types. It is designed for small workloads, testing, and low-traffic personal projects.
Core GCP Always Free Limits (2024)
All limits below reset on the first day of each billing month. Always verify against Google’s official documentation for last-minute updates.
Compute Engine
- 1 x e2-micro VM instance (per billing account) running in us-west1, us-central1, or us-east1 regions
- 30 GB per month of standard persistent block storage (HDD) attached to the free VM
- 5 GB per month of snapshot storage
- 1 GB per month of outbound data transfer to all regions except China and Australia
Cloud Storage
- 5 GB per month of regional storage in us-west1, us-central1, or us-east1 (standard storage class only)
- 5,000 Class A operations (e.g., object uploads, bucket listings) per month
- 50,000 Class B operations (e.g., object downloads, metadata retrievals) per month
Serverless Services (Cloud Functions & Cloud Run)
- Cloud Functions: 2 million invocations, 400,000 GB-seconds of memory usage, 200,000 CPU-seconds per month
- Cloud Run: 2 million requests, 360,000 vCPU-seconds, 180,000 GB-seconds of memory usage per month
BigQuery
- 1 TB of querying capacity per month
- 10 GB of active storage for tables and partitions
Other Eligible Services
- Pub/Sub: 10 GB of message ingestion per month
- Cloud Build: 120 minutes of build time per day
- Artifact Registry: 500 MB of storage for container images per month
How to Track GCP Always Free Usage
Google provides built-in tools to monitor your free tier usage in real time:
- Open the Google Cloud Console and navigate to Billing > Cost Breakdown
- Filter for "Always Free" usage to see exactly how much of each cap you’ve used
- Set up budget alerts at 50%, 75%, and 100% of your expected free tier usage to get email notifications before you exceed limits
Pro tip: Unused free tier allocations do not roll over to the next month.
Common Mistakes That Trigger Overages
Even experienced users accidentally exceed GCP Always Free limits. Avoid these top errors:
- Deploying resources in non-eligible regions (e.g., us-east4, europe-west1) instead of the three approved US regions for most services
- Running more than one e2-micro VM instance at a time
- Leaving unattached persistent disks or unused Cloud Storage buckets active (these count toward your storage limits even if not in use)
- Using premium storage classes (Nearline, Coldline) for Cloud Storage, which are not covered by Always Free
- Forgetting that Always Free does not cover managed databases like Cloud SQL or managed Kubernetes (GKE) clusters
GCP Always Free vs. $300 Free Trial: Key Differences
Many users mix up these two separate GCP free offerings. Here’s how they compare:
- GCP Always Free: Permanent, fixed service limits, no credit expiration, only eligible for specific services
- $300 Free Trial: 90-day expiration, $300 credit applicable to all GCP services, no fixed usage caps (limited only by the credit amount)
- You can use both offerings simultaneously, but the free trial credit will apply to non-Always Free services first
Frequently Asked Questions
- Do GCP Always Free limits reset monthly?
- Yes, all usage caps reset automatically on the first day of each billing month. Unused allocations do not carry over.
- Can I use GCP Always Free for commercial projects?
- Yes, as long as you stay within the published limits and comply with Google Cloud’s terms of service. High-traffic commercial projects will likely exceed free caps quickly.
- What happens if I exceed GCP Always Free limits?
- You will be charged standard pay-as-you-go GCP rates for any usage beyond the free tier caps. There is no grace period for overages.
- Are GCP Always Free limits the same for all regions?
- No, most Always Free services are restricted to us-west1, us-central1, and us-east1 regions. A small number of services (like Cloud Build) have global Always Free availability.
Get Started with GCP Always Free Today
Ready to keep your GCP costs at zero? Start by auditing your current usage in the Google Cloud Console, and set up budget alerts to catch overages early. For more advanced cost optimization tips, check out our guide to GCP cost management best practices (internal link idea).
Always refer to Google’s official GCP Always Free documentation (external authority reference) for the most up-to-date limit details, as Google may adjust caps with 30 days’ notice.
Have questions about specific service limits? Drop them in the comments below, and we’ll help you stay within your free tier allocation.
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