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Azure Advisor Savings Calculator

Turn Azure Advisor cost recommendations into a realised monthly saving after an honest adoption rate.

About Azure Advisor Savings Calculator

Advisor reports a theoretical maximum that assumes every recommendation is applied, which never happens, so the useful number is the identified saving multiplied by a realistic adoption rate. The levers also differ in risk: deleting an unattached disk is free, resizing a VM needs a maintenance window, and a reservation trades flexibility for a discount over one or three years. Presenting an unfiltered Advisor figure to a finance team creates a target nobody can hit, while an adoption-weighted number is a commitment you can defend; the orphaned-resource line is worth attacking first because it needs no approval and carries no performance risk.

Formula

Azure Advisor Savings

identified = idle VM spend × saving rate + orphaned resource spend + reservation-eligible spend × discount + Hybrid Benefit-eligible licence spend; realised = identified × adoption rate.

adoption rate
Share of recommendations that survive change control and actually ship
orphaned
Resources billing with nothing attached — the only risk-free saving on the list
reservation discount
Percentage a 1-year or 3-year commitment takes off the pay-as-you-go rate

Worked example

With the default values below, Azure Advisor Savings Calculator returns Realised Monthly Saving of $10,178.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total monthly Azure spendaccepts 1–100,000,000 USD
40,000 USD
Spend on idle or underused VMsaccepts 0–100,000,000 USD/month
6,000 USD/month
Saving available on those VMsaccepts 0–100 %
70 %
Spend on unattached disks, idle IPs and old snapshotsaccepts 0–100,000,000 USD/month
1,300 USD/month
Steady-state spend eligible for reservationsaccepts 0–100,000,000 USD/month
18,000 USD/month
Reservation discount availableaccepts 0–80 %
38 %
Windows licence spend eligible for Hybrid Benefitaccepts 0–100,000,000 USD/month
2,200 USD/month
Share of recommendations you will actually implementaccepts 0–100 %
70 %

Results

Realised Monthly Saving
$10,178.00
Saving Identified
$14,540.00
Realised Annual Saving
$122,136.00
Optimised Monthly Spend
$29,822.00
Reduction in Total Spend
25.4%
Largest Single Lever
Reservations and savings plans on steady-state compute

Step by step

  1. 1Values used
  2. 2Azure Advisor Savings
  3. 3Realised Monthly Saving= 10,178.00
  4. 4Saving Identified= 14,540.00
  5. 5Realised Annual Saving= 122,136.00
  6. 6Optimised Monthly Spend= 29,822.00
  7. 7Reduction in Total Spend= 25.4
  8. 8Largest Single Lever= Reservations and savings plans on steady-state compute

Assumptions and limits

  • The result is derived only from the 8 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Azure Advisor Savings calculated?

identified = idle VM spend × saving rate + orphaned resource spend + reservation-eligible spend × discount + Hybrid Benefit-eligible licence spend; realised = identified × adoption rate. Advisor reports a theoretical maximum that assumes every recommendation is applied, which never happens, so the useful number is the identified saving multiplied by a realistic adoption rate. The levers also differ in risk: deleting an unattached disk is free, resizing a VM needs a maintenance window, and a reservation trades flexibility for a discount over one or three years.

Why does Azure Advisor Savings matter?

Presenting an unfiltered Advisor figure to a finance team creates a target nobody can hit, while an adoption-weighted number is a commitment you can defend; the orphaned-resource line is worth attacking first because it needs no approval and carries no performance risk.

What values do I need to enter?

This calculator takes 8 inputs: Total monthly Azure spend, Spend on idle or underused VMs, Saving available on those VMs, Spend on unattached disks, idle IPs and old snapshots, Steady-state spend eligible for reservations, Reservation discount available, Windows licence spend eligible for Hybrid Benefit, Share of recommendations you will actually implement. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

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