NIS B-1 for Holding Company in Mexico: 2026 Guide
NIS B-1 is the standard issued by CINIF that requires ALL Mexican companies applying NIF — not just stock market issuers — to report 30 basic sustainability indicators starting in 2026 with FY2025 data. Its universal scope makes it the highest-impact standard in Mexico by number of affected companies. The IBSO indicators cover environmental, social, governance, and economic dimensions and are designed as the minimum auditable baseline.
Mexican private holdings are the most complex NIS B-1 application case because CINIF has not yet issued consolidation guidance for groups with heterogeneous activities. The current interpretation is that each NIF-applying subsidiary must report its own 30 IBSO indicators — which can multiply compliance costs by 5-10x for a group with many subsidiaries.
Why NIS B-1 Applies Differently in Holding Company
CFO and Board of private holding required to consolidate NIS B-1 across 5+ subsidiaries with different business models
No CINIF methodology for NIS B-1 consolidation across subsidiaries in different sectors — no guidance on how to aggregate heterogeneous indicators (energy intensity of manufacturing + logistics?)
Each subsidiary has its own ERP (SAP, Oracle, Aspel, Excel) with no financial-ESG consolidation layer
Different fiscal year-ends across subsidiaries — some close in December, others in March or June, making uniform FY2025 consolidation impossible
Intragroup emissions double-counting — if the holding has an energy plant that sells electricity to its subsidiaries, who reports the Scope 1?
Critical NIS B-1 KPIs for Holding Company
| Required KPI | Data Source | Difficulty |
|---|---|---|
| Group aggregate GHG Scope 1+2 (tCO2e — consolidated sum) | Purchased electricity (Scope 2) | High 🔴 |
| Total group energy consumption (GJ) | Electricity bills (Scope 2) | High 🔴 |
| Consolidated workplace incident rate per 200k hours (TIFR) | Meters and inventories | High 🔴 |
| Percentage of total group waste recycled or valorized (%) | HR / payroll system | Medium 🟡 |
| Women in management positions — aggregate across all subsidiaries (%) | ERP / accounting system | Medium 🟡 |
Hard-to-Collect Data in Holding Company
Unified energy consumption data with the same denominator when subsidiaries operate in different sectors (no single intensity KPI applies to manufacturing + distribution + services)
Inventory of subsidiaries that are NIF entities vs. those consolidating under international IFRS, to determine which fall within the NIS B-1 perimeter
Waste generated by type (hazardous, non-hazardous, special) aggregated across all subsidiaries with different NOM classifications
That is why manual Excel-based processes will not pass the 2027 assurance. Without automated traceability, an external auditor cannot verify the completeness or accuracy of emissions data.
Checklist: 8 Steps to Comply with NIS B-1 in Holding Company
- 1
Reporting of all 30 Basic Sustainability Indicators (IBSO) organized across the four ESG+E pillars
- 2
Quantification of GHG emissions Scope 1 and 2 in metric tons of CO₂ equivalent with documented methodology
- 3
Measurement and reporting of total water consumption and its intensity relative to business volume
- 4
Disclosure of solid waste generation and disposal, and hazardous waste management practices
- 5
Mandatory social indicators: employee turnover, accident rate, gender pay gap, and training hours per employee
- 6
Connect data sources (ERP, meters, suppliers) to a centralized platform
- 7
Review with internal audit team and adjust consolidation perimeter
- 8
Generate report in CNBV/CINIF format ready for external assurance
How Climatta Automates NIS B-1 for Holding Company
Automated Collection
Eliminate spreadsheets in Holding Company. Climatta connects your systems and automatically collects Group aggregate GHG Scope 1+2 and other critical KPIs.
Auditor-Grade Traceability
Every data point has source, date, and owner documented. The 2027 assurance auditor can trace every figure to its origin in your systems.
NIS B-1 Report Ready
Generates the report in the exact CINIF format — tables, metrics, and narrative. No last-minute manual reformatting.
Onboarding in 4 Weeks
Climatta connects to Holding Company systems in 4 weeks. No months-long IT project or external implementation consultant.
FAQ: NIS B-1 in Holding Company
Ready to comply with NIS B-1 in Holding Company?
Climatta centralizes all data collection, generates the report in regulatory format, and leaves it ready for 2027 external assurance. No spreadsheets.