Azure Cost Audit: The Checklist Microsoft Does Not Send You

Published: 2026-05-20
Author: Saascutters
Read time: 7 minutes
Keywords: Azure cost audit, Microsoft Azure spend reduction, Azure reserved instances, Azure FinOps, cloud cost cutting

Azure's billing complexity is legendary. Between subscriptions, resource groups, management groups, and tenant-level agreements, the person who understands your Azure bill is often the person who set it up — and they may have left two years ago.

This checklist cuts through the noise. Run it once per quarter.

1. Map every subscription to an owner

Open the Azure portal. Go to Cost Management + Billing → Subscriptions. For each subscription, verify:

• Who owns the budget?
• What application or team does it serve?
• Is it production, staging, or development?

Orphaned subscriptions — especially dev/test subscriptions that were never decommissioned — are the single largest source of Azure waste we find.

2. Check reservation utilization

Azure Reservations (formerly Reserved Instances) require upfront payment for one or three years. If your reserved capacity is underutilized, you are paying for VMs that do not exist. Go to Reservations in Cost Management and check the utilization percentage. Anything under 85% is a red flag.

3. Audit dev/test pricing

Microsoft offers steep discounts on dev/test subscriptions — but only if you register them correctly. A standard subscription running development workloads is paying full price. Verify your dev subscriptions are enrolled in the Dev/Test pricing offer.

4. Review Azure Hybrid Benefit

If you own Windows Server or SQL Server licenses with active Software Assurance, you can apply Azure Hybrid Benefit to reduce compute costs by up to 40%. Many enterprises own the licenses but never apply the benefit because the checkbox is buried in the VM creation flow. Go to Cost Management → Cost analysis → Azure Hybrid Benefit and verify every eligible VM is enrolled.

5. Find unattached disks

Disks left behind after VM deletion are one of the most common Azure cost leaks. Go to Disks in the portal, filter by ** unattached**, and review every one. If it has been unattached for more than thirty days, snapshot it and delete it.

6. Evaluate Azure SQL tiering

Azure SQL Database pricing escalates quickly from Basic ($5/mo) to Premium ($7,000+/mo). Check your DTU or vCore utilization. If you are on Premium with average CPU under 20%, downgrade to Standard or General Purpose. The performance difference is smaller than the pricing gap suggests.

7. Review bandwidth and egress

Azure charges for data leaving the region and leaving Azure entirely. Go to Cost analysis, group by meter, and look for Bandwidth and Inter-Region. If inter-region traffic is over $2,000 per month, restructure your architecture to keep data in the same region as your compute.

When to bring in help

Azure cost audits are time-intensive and politically sensitive. If your monthly Azure spend exceeds $50,000, the internal audit alone will consume three to four weeks of senior engineering time. Saascutters runs Azure cost audits end-to-end, executes the fixes, and verifies savings against your prior invoices. Thirty percent of verified first-year savings. No retainer. Request an Azure audit →