Answer your Microsoft supplier GHG request with service-level accounting and consultant-letter support.
Keslio helps service businesses prepare total-company and service-level GHG emissions, document the methodology, organize evidence, and support the consultant-letter option for Microsoft supplier reporting.
People-led, not software-led
Built for teams without sustainability staff
Three accepted annual cycles
If the request is already in your inbox
You do not need to turn it into a broad ESG project.
You need a clear read of the Microsoft requirement, practical data records for total-company and service-level emissions, and a consultant-letter response your team can stand behind.
Microsoft's guidance is public. Your exact requirement isn't.
Microsoft supplier reporting sits in an awkward gap: Microsoft's published disclosure-cycle guidance asks suppliers to address total-company and service-level data-integrity requirements through assurance or consultant-letter options, while the exact submission requirement still depends on the contract, portal wording, or written request you received.
The request sounds simple, then turns technical.
Scope 1, Scope 2, Scope 3 categories, service-level accounting, reference units, emission factors, evidence, and portal wording all need to line up.
The data lives everywhere except one clean file.
Finance, travel, utilities, procurement, cloud usage, HR, and operations records usually need to be turned into a defensible footprint.
A key customer relationship is attached to the response.
This is not a generic ESG exercise. It is a Microsoft supplier requirement that needs to look prepared, specific, and credible.
A strong response protects the Microsoft relationship and leaves your team with a documented process for the next annual request.
From first read to reusable evidence pack.
Keslio starts by reading the Microsoft wording, then scopes the total-company emissions, service-level accounting, evidence, methodology, and consultant-letter work needed for the response.
Request review
Keslio reads the Microsoft request, checks the deadline and likely scope, and tells you what the next step should be.
Fixed-fee project quote
You receive a bounded quote with timeline, data needs, deliverables, and the client inputs Keslio needs to start.
Calculation and evidence build
Total-company and service-level emissions data are collected, calculated, documented, and organized for a buyer-facing response.
Consultant letter and refresh workflow
Keslio provides the consultant letter, supports clarification questions, and leaves the work ready for next year's refresh.
From confusing request to annual refresh.
The first year creates the evidence base. The next year should be faster, cleaner, and less stressful.
The first response does the heavy lifting. Here's what next year looks like once it's in place.
Microsoft request received
You share the portal wording, deadline, or supplier instruction that triggered the work.
Requirements mapped
Keslio identifies the total-company emissions, service-level accounting, evidence needs, and consultant-letter or assurance requirement.
Consultant-letter package
Calculations, methodology notes, supporting evidence, and consultant-letter documentation are prepared together.
Annual refresh
Next year starts from a working base instead of a blank spreadsheet.
Fixed fees, quoted after your free review.
For Microsoft reviews, Keslio treats service-level accounting as core unless the request says otherwise. The exact quote depends on deadline, data quality, entities, service/reference-unit complexity, and whether the request requires independent assurance instead of a consultant-letter option.
Get a fixed-fee quoteAnnual refresh
$2k-$4k
For returning or well-organized suppliers refreshing prior total-company and service-level calculations, evidence, and consultant-letter materials.
Service-level accounting package
$3k-$8k
For first-time or changed Microsoft requests that need total-company emissions plus service-level emissions by service, project, contract, reference unit, or delivery volume.
Complex or assurance project
Quoted
For multiple entities, messy historical data, physical operations, unusual Scope 3 boundaries, or independent assurance. Keslio can prepare the underlying materials; assurance is separate.
Built from real supplier reporting work.
Keslio has already supported enterprise customer supplier reporting work. Details are anonymized for confidentiality.
Relevant client
Microsoft supplier, service-business context
Keslio supported an outsourced marketing services provider supplying Microsoft.
Result
Accepted reporting work
The engagement covered annual GHG emissions calculations and consultant-letter reporting that was accepted.
Repeatability
Three annual cycles
The client returned across three consecutive disclosure cycles, which is the refresh behavior this offer is built around.
Have the Microsoft request in front of you?
Paste the details below. Keslio will review the request, ask clarifying questions or schedule a short call if needed, and send a fixed-fee quote with timeline and data needs.
Best fit if you already have a request, template, portal instruction, or deadline from Microsoft.
The free review does not include calculations, service-level accounting, consultant-letter issuance, or independent assurance.
See what the buyer has published, and how we work from your exact wording.
The official links below show what the buyer has published. We still work from the exact wording, portal instructions, and deadline you received, not a generic template.
All buyers and platforms
Every buyer and platform we help suppliers answer
See how we help suppliers answer requests from Microsoft, Salesforce, Google, Amazon, Cisco, HP, Dell, CDP, EcoVadis, and more.
See all buyers and platformsOfficial materials
Official Microsoft supplier materials
The public links below are the buyer's own materials. We still work from the request wording, portal instructions, and deadline you received, so the response fits your situation.
Free download
Download our one-pager on navigating Microsoft's Supplier Requirements
A One-Pager on Navigating Microsoft's Supplier Sustainability Reporting Requirements
DownloadCommon questions
Short answers for the first questions a Microsoft supplier usually has before sharing the request.
Can Keslio provide consultant letters?
Yes. Keslio provides consultant letters for Microsoft supplier GHG reporting projects when we complete the emissions calculation, methodology documentation, and supporting evidence review.
Can Keslio help with Microsoft service-level accounting?
Yes. Keslio treats service-level accounting as a core Microsoft workstream unless the request says otherwise, then confirms the exact service, project, contract, reference unit, or delivery-volume basis from the wording you received.
What happens in the free review?
Keslio reviews the Microsoft request, asks clarifying questions or schedules a short call if needed, then sends a fixed-fee quote with the likely timeline, data needs, and deliverables.
What data is usually needed?
Most service businesses need utility, fuel, travel, purchased goods and services, employee commuting, cloud or software usage where relevant, finance records, service lists, and reference-unit or delivery-volume data that support total-company and service-level calculations.
What if the request asks for something outside a consultant letter?
Keslio will flag that during review before quoting the project. This page is focused on Microsoft supplier GHG calculations, service-level accounting, and consultant-letter support. Independent assurance is a separate project.
Is Keslio affiliated with Microsoft?
No. Keslio is not affiliated with or endorsed by Microsoft. Keslio helps suppliers respond to customer sustainability requirements.
Tell us what you need.
Bring us the sustainability request, reporting deadline, or strategy question you are facing. We will read it and suggest a practical first step, and the first conversation is free.