Core funding is what allows a charity to do good work consistently, not just deliver one more project. It pays for the people, systems, relationships and time that make every outcome possible. Yet many UK charities find it harder to ask for unrestricted support than to write a tightly specified project bid. This guide explains how to make the case for core funding clearly, credibly and in a way a funder can act on.
The language varies: you may hear core costs, unrestricted funding, organisational development or flexible funding. The principle is the same. You are asking a funder to invest in the capability of the organisation, rather than paying only for a defined set of activities. For a small charity, that flexibility can be the difference between surviving a busy year and building something durable.
A strong case for core funding is not an apology for overheads. It is a clear explanation of how the organisation turns money into lasting change — and why flexible support will make that work more effective.
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What is core funding?
Core funding is financial support for the essential costs of running your organisation and delivering its mission. It may be unrestricted, meaning you can use it where it is most needed, or it may support a broad area such as leadership, safeguarding, evaluation or a team member's time.
Project funding, by contrast, normally pays for a defined intervention: a programme, group, campaign, service or piece of equipment. Project funding is valuable, but a charity cannot run a safe, reliable and learning organisation on project activity alone.
The simplest distinction
Project funding pays for what you deliver.
Core funding pays for the strength and capability that make delivery possible.
Most resilient organisations need both. The goal is not to replace every project grant with unrestricted money; it is to build a funding mix that does not leave essential work permanently subsidised by whichever project happens to be funded next.
Why is core funding hard to secure?
The difficulty is partly presentational. “We need £30,000 for management, rent and administration” may be accurate, but it does not yet tell a funder why the investment matters. A funder needs to see the connection between organisational capacity and the change you create.
There is also a practical challenge. Core funding is often competitive, and unrestricted grants are rarely won by a generic appeal for help. Funders want confidence that the organisation understands its purpose, knows what capability it needs next and can show how support will improve its work.
That does not mean pretending everything is perfect. A credible case can name a real constraint — fragile systems, stretched leadership, inconsistent evidence or a reliance on one grant — and show a sensible plan to strengthen it. Honest diagnosis is usually more persuasive than polished vagueness.
Do not ask a funder to pay your overheads. Show them what stronger foundations will allow your mission to achieve.
Start by mapping what your mission needs
Before you approach a funder, separate essential organisational costs from nice-to-have improvements and from costs that belong to a specific project. This gives your request a firm basis and stops the budget becoming a list of whatever bills are currently worrying you most.
1. Identify the capabilities behind delivery
Look beyond the visible activity. A youth service may need trained staff, supervision, safeguarding, volunteer coordination, data protection, a trusted referral network and time to listen to participants. A community organisation may need a stable base, local relationships, governance and the ability to respond when needs change. These are not distractions from impact. They are part of the delivery model.
2. Find the costs that keep being subsidised
Review your last year of funding and ask which essential costs were squeezed into project budgets, covered by reserves or absorbed by unpaid founder time. Repeatedly underfunded work is a signal that the organisation needs a core-funding conversation, not a more inventive project budget.
3. Choose a meaningful period
A one-year grant may solve an immediate pressure, but a two- or three-year request can make a stronger strategic case when you can explain what the additional time will change. Be realistic about what the organisation can build, test and learn during the period. Longer funding is not automatically better if the plan is vague.
A useful cost map
Keep the work safe: safeguarding, supervision, governance, compliance and financial controls.
Keep the work strong: staff development, evaluation, community listening and service improvement.
Keep the work sustainable: leadership time, fundraising, partnerships, reserves and systems.
Build the case around change, not overhead
Your case for core funding should answer one central question: what will become more possible, more reliable or more effective because this organisation has stronger foundations?
Explain the need for the organisation
Be specific about the people and place you serve. Describe the gap your organisation exists to address, what people with lived experience say about it and what happens when the gap remains. National evidence can establish scale, but local insight shows why your organisation is relevant here and now.
Show why capability affects outcomes
Connect each core investment to the quality of your work. Better supervision may improve consistency and safety. Stronger data systems may help you spot who is being missed. Fundraising capacity may reduce dependence on a single project grant. The point is not to claim that a new system magically solves a social problem; it is to show the chain between a stronger organisation and better conditions for change.
This is where a clear theory of change helps. It makes the relationship between resources, activities and outcomes visible without asking the funder to take a leap of faith.
Make the organisation credible
Give evidence that your team can use the investment well. Include relevant delivery experience, community trust, partnerships, governance, financial controls and what you have learned from previous work. Early stage organisations can draw on the experience of their founders and trustees, pilot learning and partner confidence; they do not need to pretend to have a ten-year track record.
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Write a budget a funder can understand
A core-funding budget should be specific enough to build confidence and flexible enough to reflect the nature of the request. Avoid a single line called “overheads” with no explanation, but do not bury the reader in an accountancy export either.
- State the total request and the period. Say whether you are seeking £25,000 for one year, £60,000 over two years or a contribution towards a larger plan.
- Group related costs. People, premises, systems, governance, learning and fundraising are easier to understand than twenty unexplained line items.
- Explain the assumptions. Show how a staff cost, sessional rate, rent contribution or development project has been calculated.
- Show other income. A realistic funding mix reassures the reader that this grant is part of a plan, not the organisation's only hope of survival.
- Say what flexibility changes. If an unrestricted contribution lets you respond to demand, protect quality or invest in reserves, explain that explicitly.
Funders know that staff time, finance, technology and management cost money. The question is whether the cost is proportionate to the work and whether the organisation is learning and improving as it grows. A transparent budget is often a sign of maturity, not a liability.
Find funders who actually support core work
Not every grant-maker offers unrestricted funding, and not every unrestricted funder is right for your organisation. Read the funder's criteria, recent awards, geography, typical grant size and language around organisational development before you apply.
- Existing funders: a funder who already understands your work may be the best first conversation about a broader or longer-term contribution.
- Community foundations: local knowledge and place often make them good partners for organisational resilience and community-led work.
- Trusts and foundations: look for funders whose published priorities match both your mission and your stage of development.
- Individual and corporate supporters: regular donations, sponsorship and pro-bono expertise can sometimes provide the flexible layer that grants do not.
Treat research as part of the funding strategy, not admin before the “real” work. Our guide to finding grant funding in the UK explains how to build a shortlist, while relationships with funders give a strong core-funding case a much better chance of being heard.
Make a clear, proportionate ask
A funder should not have to reverse-engineer what you want from a compelling story. State the amount, the period, the purpose and the change the investment will unlock. If the final figure is flexible, give a range and explain what each level would make possible.
A stronger core-funding ask
“We are seeking £48,000 over two years to protect the leadership, safeguarding and learning capacity behind our community programme. This will allow us to support 180 residents each year, improve how we measure outcomes and build a more balanced income pipeline without reducing frontline access.”
It is specific, but it does not pretend that the grant directly buys every outcome. It explains what the organisation will be stronger at doing and how that should benefit the people it serves.
Common core-funding mistakes
- Calling essential work “just overheads.” The language you use can accidentally hide the role those costs play in safety, quality and impact.
- Asking without a diagnosis. “We need capacity” is not enough. Name the constraint, its consequence and the practical change you will make.
- Promising certainty you cannot prove. Strong organisations understand that change takes time and explain how they will learn, adapt and report.
- Submitting the same case everywhere. Your core story can stay consistent, but the emphasis should reflect the funder's priorities and local context.
- Ignoring the funding mix. Core support is more credible when it sits inside a plan for grants, contracts, trading, donations and partnerships that fits your mission.
- Making the ask too small to work. A grant that funds half a role but none of the supporting capability may leave the underlying problem untouched.
A funder-ready core-funding checklist
Before you send an application or request a conversation, ask somebody outside the day-to-day work to read it once. Can they answer all six questions without searching through the document?
- Who does the organisation serve, and what need or opportunity is it responding to?
- What essential capability makes the organisation’s work possible?
- What is currently fragile, constrained or being subsidised by the team?
- What exactly will the requested funding strengthen?
- How will stronger foundations improve the experience or outcomes of the people served?
- What amount, period and reporting relationship are you asking the funder to consider?
If the answers are unclear, improve the thinking before you polish the prose. Our case for support guide can help you turn the answers into a reusable funding narrative, and our guide to building a funding strategy can help place the request in a wider plan.
Core funding is not money for “nothing”. It is investment in the conditions that let meaningful work happen well.
The bottom line
The strongest case for core funding begins with respect for the work. Your organisation is not a cost attached to the impact; it is the way the impact becomes possible. Show the need you understand, the capability you are building, the evidence that gives you credibility and the difference flexible support will make over a realistic period.
Start with your own numbers. Map the essential work, find the costs that are repeatedly being squeezed into projects and choose one fundable organisational improvement to explain clearly. Then approach funders whose priorities, geography and style fit the case. Core funding is competitive, but a precise, honest and well-evidenced request gives a funder something much more useful than a plea: a credible opportunity to strengthen lasting social impact.
