Cloud SQL
GCP Cloud SQL — commitment brief
Data sourced: March 2026. Verify current figures at the Google Cloud Pricing Calculator.
Coverage summary
Cloud SQL supports spend-based committed use discounts (CUDs) that apply to CPU and memory costs for database instances across MySQL, PostgreSQL, and SQL Server. A 1-yr commitment delivers a 25% discount and a 3-yr commitment delivers a 52% discount over on-demand pricing. CUDs are scoped to a region within a billing account and apply automatically across all eligible Cloud SQL instance usage in that region.
What is covered: Cloud SQL database instance vCPU and memory usage (standard and high-memory tiers) for MySQL, PostgreSQL, and SQL Server across all regions where your commitment is purchased.
What is not covered: Storage costs (SSD and HDD), backup storage, IP address charges, outbound data transfer, and database licensing fees (e.g., SQL Server license). Shared-core machine types (db-f1-micro, db-g1-small) are excluded from CUDs.
CUD types
Cloud SQL offers spend-based CUDs only. There is no resource-based CUD for Cloud SQL — you commit to a minimum hourly dollar spend on Cloud SQL instance compute in a region rather than to a specific number of vCPUs or GiB of memory. This makes the commitment flexible across instance types and sizes within the region. Both 1-yr (25% off) and 3-yr (52% off) terms are available.
Machine type / SKU coverage
Standard tier (db-n1-standard, db-custom, db-perf) — MySQL
✅ Yes
~25%
~52%
Covers CPU and memory charges
Standard tier — PostgreSQL
✅ Yes
~25%
~52%
Same rates as MySQL
Standard tier — SQL Server
✅ Yes
~25%
~52%
SQL Server license fee excluded
High-memory tier (db-n1-highmem, db-highmem) — MySQL
✅ Yes
~25%
~52%
High-memory tier — PostgreSQL
✅ Yes
~25%
~52%
High-memory tier — SQL Server
✅ Yes
~25%
~52%
SQL Server license fee excluded
Shared-core (db-f1-micro, db-g1-small)
❌ No
—
—
Explicitly excluded from CUDs
Storage (SSD / HDD)
❌ No
—
—
Not covered by any CUD
Backup storage
❌ No
—
—
Not covered
IP address fees
❌ No
—
—
Not covered
Regional availability
Available in all commercial GCP regions. Google's documentation states that "Cloud SQL is available in all Google Cloud regions and is offered in upcoming regional launches at the time of launch." Spend-based CUDs are purchased per region and apply automatically to all eligible Cloud SQL instance compute (MySQL, PostgreSQL, and SQL Server) in that region within the billing account.
⚠️ CUD availability varies by machine type and region. Always verify at GCP regions and zones before purchasing.
Archera
Google Cloud SQL is within Archera's commitment management scope. Archera can automate spend-based CUD purchase for Cloud SQL, monitor utilization across MySQL, PostgreSQL, and SQL Server instances by region, and wrap commitments in a GRI/GSP — eliminating downside risk on over-commitment while preserving the full 25–52% discount.
Sources
⚠️ Discount percentages are approximate and region-dependent. Always verify with the Google Cloud Pricing Calculator.
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