Impact investors increasingly emphasise measurement and accountability. Most funds report indicators such as:
• Patients served
• Smallholder farmers reached
• Loans disbursed
• Insurance policies issued
These output metrics have become the dominant language of impact reporting across the industry, particularly through frameworks promoted by the Global Impact Investing Network.
But I'm curious:
“Why do outputs dominate, while deeper welfare metrics such as health gains or poverty reduction are reported far less frequently?”
These are the common reasons:
1. Outputs Are operationally observable
Outputs are directly linked to business activity. A healthcare company can easily track:
Number of consultations
Number of diagnostic tests
Number of facilities opened
These metrics are generated through routine operational data. They are verifiable, auditable, and scalable.
2. Attribution is much easier
Outputs are easier to attribute to a specific investment. If an impact fund finances the expansion of a hospital network, it can reasonably report the
number of additional patients treated
However, linking that investment to changes in population health outcomes is more complex.
3. LP reporting requirements
Impact funds ultimately report to limited partners (LPs). LPs typically require:
• Clear and credible impact indicators
• Consistency across portfolio companies
• Low reporting burden
Output metrics satisfy these requirements well. They are easy to standardise and aggregate across different investments.
4. Outputs align with enterprise growth
Impact investing frequently targets scalable enterprises. Growth-stage businesses naturally track:
• Customers served
• Products delivered
• Geographic expansion
These indicators reflect both commercial success and social reach, making them attractive for dual financial-impact reporting.
