Theory of Change: A Practical Guide for Small Charities

"Theory of change" sounds academic, and plenty of people in small charities quietly dread the phrase. It does not need to be hard. A theory of change is your explanation of how the things you do lead to the difference you want to make. If you can explain to a friend why your project helps people, you already have the start of one. This guide shows how to write it down in a way funders recognise, and how it makes the rest of your grant application stronger.

What a theory of change is (and is not)

A theory of change describes a chain: the problem you are tackling, the people you work with, the activities you run, the outcomes those activities lead to, and the long-term impact you hope to contribute to. Crucially, it also explains why you believe one step leads to the next.

It is not a business plan, a budget, a list of targets or an evaluation. The think tank and consultancy NPC, whose free guide Theory of change in ten steps is widely used in the UK voluntary sector, makes this point strongly: targets, numbers and measurement come later, once you are clear about the underlying thinking.

Why funders care

Most grant forms never say "please attach your theory of change". But nearly every form asks questions that a theory of change answers:

• What difference will your project make?
• What outcomes will you achieve?
• How do you know your approach works?
• How will you measure success?

If you have thought through your theory of change, these sections become consistent and convincing. If you have not, assessors often spot outcomes that do not follow from the activities, or measures that do not match the outcomes. Our guide to how funders assess applications explains why that logic matters so much at the assessment stage.

The building blocks, in plain English

Term	What it means	Example for a youth mentoring project
Problem	The issue you are tackling	Young people leaving school without a job, training or a college place
Target group	The people you work with directly	14 to 16 year olds at two local schools, at risk of leaving without a plan
Activities	What you do	Weekly one-to-one mentoring with trained volunteers
Mechanisms	How people need to experience it for it to work	Young people feel listened to and trust their mentor
Outcomes	Shorter-term changes for people	More confidence, better attendance, a plan for after school
Impact	The long-term change you contribute to	More young people go on to education, training or work
Assumptions	What must be true for this to work	Schools give pupils time to attend; volunteers stay for the year

The mechanisms row is the one most people miss. NPC describes mechanisms as what you want people to be thinking, feeling or doing while they experience your service, and argues they deserve to be front and centre. A mentoring scheme where young people do not trust their mentor will not change much, however many sessions it runs.

How to build your theory of change in six steps

NPC's guide breaks the process into ten steps. For a small project, the six below cover the essentials. Do this with your team, volunteers and ideally some of the people you work with. NPC stresses that the discussion is as valuable as the document.

Step 1: Describe the problem

Write one or two sentences on the issue you want to tackle. Then ask: who is affected, what causes it, what gets in the way of change, and what support already exists? Our guide to writing a statement of need covers the evidence you will need here.

Step 2: Be precise about who you work with

Your target group is the people you work with directly. If you train teachers to support pupils, the teachers are your target group. Be specific about age, place and circumstances. "Families" is vague; "parents of children under five in Northfield who are new to the area" is useful.

Step 3: Define the long-term change

What will be different for people in a year or five years because of your work? Keep it to one or two sentences. NPC points out that impact is something people achieve for themselves, with your help, and that you will contribute to it alongside others. You do not have to claim you will solve it alone.

Step 4: Work backwards to outcomes

What shorter-term changes need to happen for that impact to be more likely? Think about changes in knowledge, skills, attitudes and behaviour. Outcomes are usually things you could expect to see within weeks or months.

Step 5: List your activities and how they work

Now describe what you will do, briefly: what, how often, delivered by whom, and how people will find you. Then write down the mechanisms: how people need to experience your activities for the outcomes to follow. Feeling safe, trusting staff, having fun and feeling that something is relevant to them are all mechanisms.

Step 6: Write down your assumptions

Imagine your fiercest critic. What would they question? Can you really reach the people you describe? Will volunteers stay? Does the evidence support the link between your activity and the outcome? Writing these down helps you manage the risks and tells you what to test through monitoring.

Do you need a diagram?

No. Diagrams are a good way to summarise and communicate a theory of change, and many organisations put one on a single page. But NPC is clear that a theory of change is more than a diagram, and it is perfectly acceptable to have one without. For a grant application, a few clear paragraphs or a simple table like the one above is usually better than a crowded chart squeezed into a form.

A worked example in one paragraph

Here is how a small community food project might sum up its theory of change in an application:

Many families in our area run short of food at the end of the month and feel ashamed to ask for help. We run a weekly community pantry and cooking club for families referred by local schools and the children's centre. Because it is a membership pantry rather than a food bank, people choose their own food and feel like customers, not recipients, so they keep coming back and talk to us about other pressures. In the short term, families spend less on food, cook more meals from scratch and get advice on benefits and debt. Over time, we expect fewer families to reach crisis point, and children to be better fed. This works if referral partners keep sending families, and if we can keep enough volunteers for the cooking club.

That paragraph covers the problem, target group, activities, mechanism, outcomes, impact and assumptions in under 150 words.

Turning your theory of change into outcomes and measures

Once you have a theory of change, the outcomes section of your application follows from it. For each outcome, ask: how would we know if this was happening? That gives you your indicators. For example:

• Outcome: families spend less on food. Indicator: members' own estimates of weekly food spend, asked when they join and after three months.
• Outcome: families cook more meals from scratch. Indicator: a short check-in question every eight weeks.
• Mechanism: people feel like customers, not recipients. Indicator: a simple feedback card, plus volunteers' notes on return visits.

Keep measures proportionate to the size of the grant. Funders do not expect a small group to run a research study. NPC's guide notes that smaller, light-touch evaluations use simpler methods such as before-and-after surveys and conversations with participants. Our guide to monitoring and reporting covers how to collect this without drowning in paperwork.

Common mistakes

• Starting with targets. "We will reach 500 people" is not a theory of change. Get the logic right first, then the numbers.
• Outcomes that are really activities. "Run 40 sessions" is an output. "Participants feel less isolated" is an outcome.
• Too much detail. Keep it high level. Delivery plans belong elsewhere.
• Claiming too much. Say you will contribute to long-term change, not that you will single-handedly end it.
• Writing it once and forgetting it. NPC calls a theory of change a living document. Revisit it as you learn.

Find funders who share your goals

A clear theory of change also makes it easier to spot which funders care about the outcomes you are working towards. GrantMatch lists open grants for charities, community groups and social enterprises, from rolling programmes such as National Lottery Reaching Communities England to small local funds. Set up a free profile to see the ones that fit you.