The Five Dimensions of Impact
A shared impact-management frame that asks five questions about any claimed impact: what changed, who experienced the change, how much changed, contribution, and risk.
Also known as: IMP five dimensions, Impact Frontiers five dimensions, What / Who / How Much / Contribution / Risk.
Context
Impact Measurement and Management needs a common grammar before it needs more metrics. A family office may hold a first-loss housing PRI, a public-market climate allocation, a DAF-funded recoverable grant, and a manager claiming jobs created in a private-credit fund. Each position can produce a report. The hard question is whether those reports describe comparable things.
The Five Dimensions came out of the Impact Management Project’s practitioner consensus work and are now stewarded by Impact Frontiers as part of the Impact Management Norms. The frame is simple enough to use in an investment committee memo and precise enough to keep a manager from hiding behind a single activity count. It asks the office to describe impact across five dimensions: What, Who, How Much, Contribution, and Risk.
For family-office readers, the frame matters because it sits between Theory of Change and metric selection. A theory of change names the causal pathway. The Five Dimensions describe the impact claim. IRIS+ metrics, surveys, operating data, and independent verification then test whether the claim is holding. If the office skips the middle layer, it usually measures whatever the investee can count and calls the result impact.
Problem
Impact reports often compare unlike claims as if they were one thing. A portfolio table may put “12,000 people reached,” “40% lower emissions intensity,” “$30M deployed in underserved communities,” and “3.2x multiple on invested capital” in adjacent rows. Those numbers may all be true, but they don’t answer the same question.
Without the Five Dimensions, the office tends to confuse scale with impact quality. It may favor an investment that reaches 100,000 lightly affected customers over one that changes 2,000 households’ financial security for five years. It may describe a green bond and a first-loss PRI under the same climate-impact label even when the first is value-aligned exposure and the second changed a financing outcome. It may report who was reached without saying whether the affected people were below threshold, whether the change lasted, or whether the office’s capital changed anything.
The problem isn’t that offices lack dashboards. The problem is that dashboards often count before they classify. The Five Dimensions put classification first.
Forces
- Comparison versus fit. A family council needs a shared frame across investments, while each issue area still needs its own outcome logic.
- Scale versus depth. More people reached is not always more impact if the change is shallow, brief, or already happening.
- Enterprise contribution versus investor contribution. The investee may produce an outcome, but the office still has to say what its capital, terms, governance rights, or networks changed.
- Positive intent versus mixed effects. A useful enterprise can create negative or uneven outcomes for employees, suppliers, communities, or the environment.
- Evidence versus cost. The office needs enough data to make a serious claim without building a measurement system so expensive that it consumes the work it is supposed to improve.
Solution
Use the Five Dimensions as the minimum question set for every material impact claim.
| Dimension | Question the office asks | Family-office test |
|---|---|---|
| What | What outcome changed, and is the change positive or negative? | Name the outcome in human or environmental terms, not only the activity. “Stable housing for formerly rent-burdened households” is stronger than “housing fund financed.” |
| Who | Who experienced the outcome, and how underserved or affected are they? | Segment the affected people, communities, or environmental systems. Don’t report “households reached” when the real claim depends on income band, geography, disability status, race, tenure insecurity, or climate exposure. |
| How Much | How many experienced the outcome, how deep was the change, and how long did it last? | Separate scale, depth, and duration. A one-month energy-bill reduction and a ten-year reduction in energy burden don’t belong in the same sentence. |
| Contribution | Did the enterprise produce outcomes better than what likely would have happened otherwise? | State the counterfactual. The manager has to say what its activity changed, not only what good work sits near its activity. |
| Risk | What could make the impact different from expected? | Name evidence risk, execution risk, drop-off risk, external risk, unexpected-impact risk, and other failure modes before the report is written. |
For investors, add a related question: what did the investor contribute? Impact Frontiers treats investor contribution as distinct from enterprise contribution. A company may improve outcomes for patients, tenants, borrowers, or ecosystems. The office’s question is narrower: did the office’s capital, concession, first-close commitment, governance role, technical-assistance funding, or field-building work make that outcome more likely, larger, faster, deeper, or less fragile?
Put the dimensions in the memo before choosing metrics. The investment team should not begin with a spreadsheet of available KPIs. It should begin with the five questions, then select IRIS+ metrics or custom measures that answer them. If the team can’t fill a dimension, the claim may still proceed, but the blank becomes part of the risk section rather than something hidden in the annual report.
How It Plays Out
Consider a $780M single-family office with a $115M foundation and a family council mandate around climate resilience and housing stability. The office is comparing three proposed allocations for next year’s impact sleeve:
| Allocation | Amount | Initial claim | Five-Dimensions problem |
|---|---|---|---|
| Housing first-loss PRI | $9M | “Supports 1,400 affordable units.” | Strong What and Who claim, but Contribution has to show whether the first-loss layer changed senior lender behavior. |
| Green bond ladder | $28M | “Finances climate transition.” | Clear thematic exposure, but weak investor contribution if the bonds are oversubscribed and bought at market terms. |
| Rural health recoverable grant pool | $4M | “Improves access for 18,000 patients.” | Good scale claim, but How Much and Risk need depth, duration, follow-up, and evidence-risk detail. |
Before approval, the impact committee rewrites the comparison.
For the housing PRI, What is reduced rent burden and improved housing stability. Who is households earning below 60% of area median income in three counties with documented supply shortage. How Much is not just 1,400 units. It includes the number of households moved from rent burden above 50% of income to below 35%, the expected tenancy duration, and the share of units with affordability covenants longer than fifteen years. Contribution is the $9M first-loss layer lowering senior lenders’ modeled expected loss enough to close a $64M senior tranche. Risk includes construction-delay risk, lease-up risk, policy risk around local subsidy programs, and the chance that affordability rules do not reach the households the family intended.
For the green bond ladder, the committee writes a narrower claim. What is exposure to issuers financing eligible climate projects under their bond frameworks. Who is not yet specific enough at the office level because the use-of-proceeds reports aggregate projects across regions. How Much is issuer-reported project scale, not office-caused outcome. Contribution is weak because the office is buying liquid bonds after issuance. Risk includes label risk, refinancing risk, and the chance that reported project categories don’t produce the real-economy change the family wants. The allocation may still fit the finance-first climate sleeve. It doesn’t belong in the strongest impact-first total.
For the health recoverable-grant pool, the committee asks for better depth and duration evidence before approving the full amount. The draft reports 18,000 patients reached through mobile clinics. The committee adds follow-up completion, avoided emergency visits, patient travel time, and six-month continuity of care. It also requires the intermediary to segment by county and insurance status. The first-year grant is approved at $1.5M rather than $4M, with the remaining amount conditioned on data quality and patient follow-up.
The final memo is less flattering and more useful. It says the office has one strong impact-first contribution claim, one finance-first climate-exposure claim, and one promising but evidence-thin health-access claim. The family council can now compare the three positions without pretending they are the same kind of impact.
The failure case is the office that reports all three under one headline: “$41M deployed for climate and community impact.” That sentence hides the dimensions. It lets scale substitute for depth, exposure substitute for contribution, and intent substitute for risk analysis. It isn’t necessarily false. It’s too imprecise to govern.
Consequences
The benefit is disciplined comparison. The Five Dimensions let the office compare a PRI, an MRI, a recoverable grant, and a public-market allocation without flattening them into the same impact word. The family council can see which claim is about affected people, which claim is about environmental systems, which claim depends on investor contribution, and which claim is mostly values-aligned exposure.
The frame also improves metric selection. IRIS+ becomes easier to use because the office knows what each metric is trying to evidence. Independent verification becomes more useful because the verifier can test specified claims instead of broad intent language. Impact washing becomes easier to catch because weak claims usually fail one or more dimensions in plain sight.
The liabilities are practical. The frame can become a checklist if staff fill every box with shallow language. It can slow approval when a principal wants to move quickly. It can also expose uncomfortable differences inside a portfolio: the office may discover that the largest reported “impact” allocation has the weakest investor-contribution story, while a smaller, messier PRI carries the stronger claim.
The second-order effect is cultural. Once the office uses the Five Dimensions, impact reporting becomes less about asking, “Can we say this was good?” and more about asking, “What changed, for whom, how much, because of whom, and with what risk?” That’s the conversation a serious family office can govern.
Related Patterns
| Note | ||
|---|---|---|
| Complements | Operating Principles for Impact Management | OPIM gives the management-system discipline around strategy, assessment, monitoring, exit, and verification; the Five Dimensions give the cross-investment impact vocabulary inside that system. |
| Complements | Theory of Change | A theory of change names the causal pathway; the Five Dimensions give the office a shared frame for describing the impact claim the pathway is supposed to produce. |
| Detects | Impact Washing | A claim that cannot say what changed, who experienced it, how much changed, contribution, and risk is usually too weak to carry an impact label. |
| Enables | Independent Verification | A verifier needs the dimensions to test whether the claimed impact is specified clearly enough to assess rather than asserted in summary language. |
| Refines | Additionality | The Contribution dimension separates enterprise contribution from what would likely have happened anyway, and investor contribution adds the investor-side question that additionality asks. |
| Upstream of | IRIS+ Metric Selection | IRIS+ metric selection should happen after the office has named which dimension each metric is meant to evidence. |
Sources
- Impact Frontiers, Five Dimensions of Impact, updated 2024-2026 — the current stewarded Norms page for What, Who, How Much, Contribution, Risk, and investor contribution.
- Impact Frontiers, Social Equity Revisions to the Norms, January 2025 — the full-text appendix showing the 2024 social-equity audit updates to the Impact Management Norms.
- Global Impact Investing Network, IRIS+ Standards, current access 2026 — the official GIIN standard and metric-selection system that translates impact intentions into measurable results.
- Operating Principles for Impact Management, The Impact Principles and Principle 1: Impact Objectives, current practice guidance — the management-system frame in which impact objectives, assessment, monitoring, exit, disclosure, and verification make dimensional claims auditable.
This entry describes a structural pattern and is not legal, tax, or investment advice. Consult qualified counsel and tax advisors licensed in your jurisdiction before adopting any structure described here.