Theory of Change vs Logframe vs Logic Model: What’s the Difference?

What is a theory of change?

A theory of change explains how and why your work is expected to lead to the change you want. The OECD’s evaluation glossary calls it “the way the intervention is expected to achieve or achieves change” (OECD glossary). The UN’s 2017 guidance adds that it should draw on “a causal analysis based on available evidence” (UNDG).

The idea came from evaluation work in the US in the 1990s. Carol Weiss described it in a 1995 Aspen Institute book as “a theory of how and why an initiative works,” and she’s generally credited with making the term popular (Stein and Valters, 2012; Center for Theory of Change).

A good theory of change does three things. It starts from the long-term change and works backward to what has to happen first. It names the assumptions that link each step to the next. And it uses evidence, such as your own data or published studies, to show why those links are likely to hold.

Here’s a short, made-up example in sentence form: If we mentor girls and fix school toilets, then more girls will stay in school, because the baseline study found that safety and sanitation are the main reasons girls in these schools drop out. That holds only if families support attendance and the schools stay open. A diagram then shows the same steps as boxes and arrows.

What is a logic model?

A logic model is a one-page picture of your program. The W.K. Kellogg Foundation’s widely used guide defines it as “a systematic and visual way” to show the links between your resources, your activities, and the results you hope to achieve (Kellogg Foundation). The CDC describes it as a one-page graphic of how a program’s activities connect to its intended outcomes (CDC).

Logic models usually read left to right: inputs, activities, outputs, short-term outcomes, and long-term outcomes. They’re common in US foundation and US government proposals. The State Department’s design toolkit pairs them with a theory of change and calls the theory of change “a brief statement that ties your logic model together” (State Department).

The difference from a theory of change is mostly depth. A logic model shows the steps. A theory of change also explains why each step should lead to the next and what could break the chain.

What is a logframe?

A logframe, or logical framework, is a matrix that sets out each level of results with the evidence you’ll use to track it. The OECD calls it a management tool that identifies the strategic elements of a project, “their causal relationships, as well as indicators, and the assumptions or risks” that may affect success (OECD glossary).

It’s older than the other tools. USAID commissioned it from a consulting firm, Practical Concepts Inc., in 1969, and the firm’s Leon Rosenberg and Lawrence Posner designed it (PCI, 1979). The World Bank notes it was used widely by bilateral donors through the 1970s and 1980s (World Bank).

The classic version has four rows and four columns. In older EU manuals, the rows were overall objective, purpose, results, and activities. Current EU calls use overall objective (impact), specific objective(s) (outcomes), outputs, and activities. The columns are the intervention logic (what you expect to happen), objectively verifiable indicators, sources of verification, and assumptions (EU project cycle manual). Here’s what that looks like for the fictional project above:

Fictional example for illustration. The activities row lists means and costs instead of indicators, as in the EU format.

Logframe vs theory of change: which do donors ask for?

Often both, used for different jobs. The theory of change explains your thinking. The logframe or results framework turns it into targets you’ll be held to. Here’s what some major donors say today:

• FCDO (UK): its April 2026 Programme Operating Framework makes the senior responsible owner accountable for each programme having a theory of change, and each programme must be reviewed at least once a year against “an agreed results framework or logframe” (FCDO).
• World Bank: “All operations supported by the Bank are required to have results frameworks,” built on an intervention logic, with indicators and a monitoring and evaluation plan (World Bank).
• Global Fund: uses a performance framework of indicators and targets, which is part of the grant agreement (Global Fund).
• US State Department: its October 2026 global request for statements of interest asks for a theory of change and says “a full logic model is not required” at that first stage (State). USAID, which used logframes and results frameworks, stopped administering foreign assistance in July 2025 (Congressional Research Service).
• EU: its project cycle method is built around the logframe. Current EU calls set their own format in the application annexes, so use the template attached to the call you’re answering.

Whatever the donor calls it, read the call’s instructions and annexes first. If it gives a template, use that template and its row and column names exactly.

What goes wrong with logframes and theories of change?

Both tools have well-known weak spots, and reviewers know them too.

Logframes can harden into contracts. Critics call this the “lock-frame” problem, where a matrix written at the start stops a project from adapting (Gasper, 2000; INTRAC). A review for the UK government found the assumptions column often turns into a “too hard” column. It also found a “missing middle”: the logframe jumps from outputs to big outcomes without explaining how one leads to the other (Vogel, 2012).

Theories of change have the opposite problem. Organizations use the term to mean very different things, from a single sentence to a wall chart (Stein and Valters, 2012). The same UK review warned that a theory of change “is not a magic bullet” (Vogel, 2012).

The fixes are practical:

• Keep outputs to things your team controls and delivers. The OECD notes that outputs are within the implementing team’s control; outcomes aren’t.
• Write real assumptions, such as “families let girls attend,” rather than “no major disruptions.”
• Make every indicator something you can measure with the data source you name, at a cost you’ve budgeted.
• Fill the missing middle. If the jump from output to outcome needs an explanation, it belongs in the theory of change.

How do you build a logframe from a theory of change?

Start with the theory of change and let the logframe follow:

1. Agree on the long-term change and the main problem it addresses, using whatever evidence you have, such as a baseline or needs assessment.
2. Work backward: what has to change for people first, and what will the project deliver to make that happen?
3. Write down the assumption behind each arrow, and the evidence for it.
4. Move the steps into the logframe rows: impact into the overall objective, the main outcome into the purpose, deliverables into outputs or results, and the work into activities.
5. Add one or two indicators per row, with a baseline, a target, and a data source.
6. Check the budget. Every activity should have a cost line, and every indicator should have a way to be collected.

A monitoring and evaluation (M&E) framework or plan usually comes next. It takes the logframe’s indicators and adds detail: how often each is measured, who collects it, and how it’s reported. If you’re writing a first-round application, see our guide on how to write a concept note, where a short version of the theory of change often goes.

Frequently asked questions

References: OECD Glossary of Key Terms in Evaluation and Results-Based Management, 2nd edition; Vogel, Review of the use of Theory of Change in international development (DFID, 2012); UNDG Theory of Change companion guidance (2017); W.K. Kellogg Foundation Logic Model Development Guide; PCI, The Logical Framework (1979); ECHO Project Cycle Management manual; FCDO Programme Operating Framework; World Bank results factsheet. Sources checked October 26, 2026.

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