Every Impact Decision Deserves Credible Evidence

When measurement is credible, every fund deployed reaches the right place, and every government knows whether its policies are working. Sigma IMS makes both possible through one unified methodology.

Collect Once, Report Many Times

One data collection process feeds every reporting requirement. No duplication, no rework.

Two Domains, One Method

The same methodology that scores a portfolio investment also diagnoses a national evaluation system, the capacity a country needs to track public and private finance against its goals.

Validated, Not Theoretical

Tested across six sectors and countries on four continents. Every output is cross-checked against practitioner expertise.

Interactive Intelligence Demonstration

See the nexus work live

Adjust a live investment portfolio and watch the evidence move in real time, from an investor's impact figures, through a national evaluation system, to the financing framework a government reports against. Then look forward: see whether the contribution is on track to its 2030 goal, with every figure labelled for how strong the claim is. The Missing Link, made tangible in a few clicks.

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Why Impact Capital and National Policy Still Operate in Silos

National evaluation systems and impact investing share the same goal, evidence-based decisions that improve lives. But they have developed in isolation.

$4T
Annual financing gap for the Sustainable Development Goals, widening because measurement infrastructure cannot connect priorities to capital
73%
of companies still manage impact data in spreadsheets, making credible reporting nearly impossible at scale
88%
of active impact investors say governments should do more to enable the market
50+
competing frameworks for impact measurement, each with different structures and reporting requirements. And the number keeps growing.

The problem is not a shortage of frameworks. It is the absence of a unified methodology.

Impact investors and government evaluators measure the same things, what changed, for whom, how much, who contributed, and what could go wrong, but they use different tools, different languages, and different reporting standards.

We bridge this gap. By consolidating 57 frameworks into one methodology, we enable organisations to collect data once and report to any stakeholder, while connecting national evaluation infrastructure to impact capital allocation.

This link now sits between two systems: the global framework countries use to track progress toward the Sustainable Development Goals, and the national financing frameworks, brought to the fore at the 2025 Financing for Development conference in Sevilla, that steer all finance, public and private, toward those goals. A country's evaluation capacity is where the two meet, and it is what we measure.

See How It Works

From Theory of Change to Metrics of Change

We build operational measurement systems grounded in 57 consolidated frameworks. Your tools, your data, your independence.

Strategic planning and data analysis

We operationalise, we do not just strategise

Every engagement produces implementable tools in formats you already work with.

We prepare for verification, we do not verify

No conflict of interest. We build audit-ready systems; independent verifiers validate them.

We design systems, we do not sell software

Platform-agnostic solutions delivered in standard file formats. No vendor lock-in.

We build capacity, we do not create dependency

Our goal is your independence. Your measurement system works without us.

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One Methodology, Multiple Audiences

Whether you manage a fund portfolio, lead a national evaluation programme, or run a social enterprise, the underlying measurement principles are universal.

Investment professionals in boardroom discussion

Impact Investors & Development Finance

Board-ready impact systems in formats your team already uses. Structured outputs that integrate into existing reporting workflows.

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Government policy discussion

Governments & Evaluation Networks

National evaluation system diagnostics with cross-country benchmarking, AI-accelerated assessment, capacity development roadmaps, and the evidence base national financing plans rely on to track results.

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Social enterprise team

Social Enterprises & NGOs

Monitoring and evaluation templates your team can maintain independently. Reporting pre-mapped to your funders' requirements.

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Startup team collaborating

Startups & Early-Stage Ventures

Start with a free readiness assessment, then grow into structured measurement. Built to make you investor-ready without enterprise complexity.

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Practical Guides for Impact Practitioners

Global development and evaluation
National M&E & Impact Investing

The Missing Link Between Evaluation Infrastructure and Impact Capital

How national evaluation systems and impact investing are mutually reinforcing, and how a structured methodology connects them.

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Startup workspace
Startup Guide

Impact Measurement for Startups: Where to Begin When Resources Are Limited

A practical roadmap from zero to investor-ready measurement in four phases. No six-figure budget required.

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Theory of Change
and the Logframe
Methodology Guide

Theory of Change vs Logframe: When to Use Each

The two planning tools most often confused in monitoring and evaluation. What each is for, where they differ, and how they work together rather than competing.

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Σ
Indicator Guide

IRIS+ Indicator Selection: A Practical Guide for Impact Investors

Navigate the 787-metric IRIS+ catalogue with a structured five-step process, narrowing from hundreds of metrics down to the fifteen to thirty that actually matter for your context.

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Ready to Transform Your Impact Measurement?

Whether you manage a fund, lead a national evaluation programme, or run a social enterprise, we would love to hear from you.

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