Proposal Writing
Theory of Change: How to Write One, With a Worked Example
Grant Writing Service Editorial Team
June 12, 2026 · 5 min read
Table of contents
Key takeaways
- A theory of change works backward from a long-term goal to the conditions that must exist first.
- The assumptions behind each link are the part reviewers test, so write them down and cite evidence where you can.
- It explains why the program should work; a logic model summarizes what the program does.
- Each precondition in the pathway is a candidate indicator for your evaluation plan.
A theory of change is an explanation of how and why a set of activities is expected to lead to a long-term goal. You build it by starting with the goal and working backward through every condition that has to be true first, then stating the assumptions each step depends on and the evidence that it holds. In a grant proposal it answers the reviewer's real question: what makes you confident these activities will produce this result?
What a theory of change contains
- Long-term goal. The lasting change you want, stated as a condition: "adults in the county hold jobs paying a living wage," not "run a job training program."
- Outcomes pathway. The intermediate conditions (often called preconditions) that must exist before the goal is reachable, arranged in the order they depend on each other.
- Interventions. The activities you will run, placed at the points in the pathway they are meant to produce.
- Assumptions. What has to be true for each link to hold, especially conditions you do not control.
- Evidence or rationale. Research, prior results, or pilot data showing the links are plausible.
- Indicators. How you will know each precondition has been reached.
It is usually presented as a diagram with a short narrative, or as a narrative alone when the funder sets a page limit.
Steps to write one
- Define the problem and the population. Who is affected, how, and what causes it. Root causes matter here, because the pathway will address them.
- State the long-term goal. One sentence, specific enough that you could tell whether it had been reached.
- Map backward. Ask "what must be true immediately before this?" and repeat until you reach conditions your activities can directly create. Each answer becomes a box in the pathway.
- Place your interventions. Mark which preconditions your program will produce and which depend on partners or on conditions already in place. Be honest about the boxes you do not control.
- Write the if-then links. "If participants earn an industry credential, then employers in the sector will interview them." Each link is a claim a reviewer can test.
- Surface the assumptions. Under each link, write what it depends on. This is the part most applicants skip and the part experienced reviewers look for first.
- Add evidence. Cite studies, program data, or a pilot for the links a skeptic would question.
- Choose indicators. One per precondition, so the theory can be monitored and evaluated.
A worked example
The example below is illustrative, written for a fictional workforce nonprofit applying for a three-year grant.
Problem: Adults without a postsecondary credential in a three-county region are concentrated in jobs below a living wage, while regional health systems report unfilled entry-level clinical roles. Participants in past programs cited childcare and transportation as the main reasons they left training.
Long-term goal: Program graduates hold health-sector jobs that pay a living wage two years after completing training.
Outcomes pathway, mapped backward:
- To hold a living-wage job two years later, graduates must be hired into roles with a wage ladder and retained past the first year.
- To be hired, they must hold a recognized credential (certified nursing assistant or phlebotomy) and have interviews with employers who are hiring.
- To be retained, they need workplace support during the first six months and stable childcare and transportation.
- To earn the credential, they must complete training and pass the certification exam.
- To complete training, they must enroll, have childcare and transportation during training, and receive tutoring in the subjects where exam failure is most common.
Interventions placed on the pathway: outreach and enrollment; childcare and transit vouchers during training; contextualized tutoring; exam fees; hiring agreements with two health systems; a retention coach for the first six months of employment.
Assumptions and evidence:
| Link | Assumption | How we address it |
|---|---|---|
| Training leads to credential | Participants can attend at least 85 percent of sessions | Vouchers remove the two barriers past participants named; attendance tracked weekly |
| Credential leads to interviews | Partner employers keep hiring at entry level | Signed hiring agreements; a third employer recruited in year one as backup |
| Hire leads to retention | Early job problems can be solved with coaching | Retention coach contacts each graduate every two weeks for six months |
| Retention leads to living wage | Employers' wage ladders apply to these roles | Wage ladder documented in the hiring agreements |
Indicators: enrollment and attendance rates; credential pass rate; interviews per graduate; placement rate within 90 days; 12-month retention; wage at 24 months.
Notice how the pathway explains choices a reviewer might otherwise question. The vouchers are not an extra; they sit on the critical path, because the problem statement shows they are why people dropped out. The retention coach exists because placement alone does not reach the goal. A theory that skipped from "training" straight to "living wage" would hide all of that.
Theory of change versus logic model
| Theory of change | Logic model | |
|---|---|---|
| Purpose | Explains why change should happen | Summarizes what the program does |
| Starting point | The long-term goal, mapped backward | Usually the resources, read forward |
| Shows assumptions | Yes, at every link | Sometimes, as a footnote row |
| Format | Pathway diagram plus narrative | One-page table of columns |
| Best for | Testing whether the strategy makes sense | Showing structure and tying it to the budget and evaluation |
Many funders ask for one or the other; some ask for both. When you need both, write the theory first, then translate it into columns with our guide to building a grant logic model. The pathway's preconditions become the logic model's outcomes, and the interventions become its activities.
Where it goes in the proposal
The theory usually sits in the program design or methods section: a diagram or short narrative that names the goal, the main pathway, the critical assumptions, and the evidence. Keep the full mapping for your own planning and give reviewers the version that fits the page limit.
Three other sections have to agree with it. The objectives should match its intermediate outcomes, which our guide to writing SMART objectives covers. The evaluation plan should measure its preconditions and check its riskiest assumptions; see how to build an evaluation plan. And the statement of need should establish the root causes the pathway addresses, which is where a strong statement of need does its work.
For how all of these sections fit together, see our guide to writing a grant proposal from start to finish.
