How to build a community budget that finance will trust

A community budget pays for a service delivered by people through technology. The visible subscription may be small beside research, facilitation, moderation, expert answers, assurance, integration and change. Conversely, an expensive product does not prove that members receive a useful outcome.

This guide provides a reproducible budgeting method for an English organisation. It does not publish market rates or future prices. Supplier pages were reviewed on 5 September 2026 and must be checked again when the buyer requests a quote.

What to take away

The method has six steps: boundary, people model, setup versus steady operation, charging units, assurance with contingency and exit, then three connected views and reforecasting.

Define what the budget includes

Write the service boundary before requesting prices. Record:

Different boundaries cannot share a meaningful cost comparison. A public customer-support forum with weekend cover requires different work from a small professional cohort meeting once a month.

State the alternative too. The decision may compare community delivery with direct support, events, documentation or no intervention. Continuing an existing service should include the cost of current technical debt and unpaid work borrowed from other teams.

Build the people model first

List tasks rather than starting with job titles. Discovery, welcoming, facilitation, unanswered questions, moderation, appeals, events, reporting, product feedback, data requests, technical administration and specialist escalation need different time and authority.

For recurring work, calculate:

activity volume x handling time x loaded people cost

Use a range for both volume and time. A routine welcome and a complex harmful-content report should not share an average that obscures their different distributions. Keep rare, high-consequence work visible as a scenario even when the expected monthly count is low.

The Office for National Statistics publishes earnings and working-hours datasets. Those statistics can provide labour-market context, but they do not determine an employer's salary, pension, National Insurance, recruitment, equipment or overhead. Finance should supply the loaded cost for each role.

4 to gross salary to cover employer National Insurance, pension and other employment costs. That range is typical rather than a rule, so ask finance for the multiplier it uses. The ONS Annual Survey of Hours and Earnings gives median gross pay by occupation for the UK, which makes the closest standard occupational code the useful comparison for England.

Account for absence and continuity. If members can post at any time, the plan needs a credible route when the ordinary manager is unavailable. This may involve limited service hours, a rota, an external provider or urgent-only cover. Price the promise the organisation actually makes.

Include contributions from product, customer support, legal, privacy, security, accessibility and safeguarding specialists. If their time is not charged to the community budget, record it as a resource dependency so decision makers see the full organisational cost.

Separate setup from steady operation

Setup can include audience research, service design, procurement, contract review, configuration, customisation, integrations, data work, content preparation, user testing, training and launch communication.

Estimate each line with a quantity, rate, source and range. Avoid a single implementation percentage applied to every product. Migration effort follows the quality and complexity of source data, while integration effort follows the systems and decisions involved.

Keep a change budget after launch. Permissions, notification rules, moderation processes, content structure and integrations will need adjustment when real members use the service. Without that allowance, necessary improvement appears as an overrun rather than an expected part of implementation.

Understand software charging units

Community products can charge by plan, registered members, active members, administrators, storage, messages, streaming, automation, support or negotiated enterprise terms.

Treat each unit as a driver to forecast. Write the supplier's definition beside your own input, so the line reads as active members multiplied by the price per active member per month. Before you accept the definition, ask for the measurement period, exclusions, reset, overage and the evidence available to the buyer.

Circle's pricing page, Mighty Networks' pricing page and Discourse's pricing page are first-party records for those providers. They illustrate different public plan structures on the review date. They are not quotes, do not establish like-for-like features and may not include taxes or the buyer's full service.

Create low, expected and high scenarios using the supplier's precise definitions. Do not inflate or suppress member activity to fit a tier. If an economically sustainable plan requires removing legitimate historical accounts, assess the retention and member consequences rather than making cost the only rule.

Cost the delivery model

Internal operation

An internal team may connect closely with product, policy and support. Budget recruitment, management, training, absence, specialist time and tooling. Do not treat work dispersed across existing employees as free.

Managed service

An external provider may price retained capacity, hours, activity units, named deliverables or a bespoke service. Define volumes, judgement boundaries, additional work and change. A quoted moderation hour may not include investigation, expert escalation, reporting or client approval.

Self-managed technology

Self-hosting can alter licence and infrastructure cost while increasing responsibility for upgrades, monitoring, backups, spam controls, recovery and technical support. Price engineering availability, not just server resources.

Combined suppliers

A platform, implementation partner and operator can create separate fees and handoff work. Allocate incident leadership, member communication, data requests and termination. Unowned gaps often become unexpected internal cost.

Include assurance and compliance

Budget the work required by the actual audience and risk: privacy review, data mapping, security assessment, accessibility testing, legal advice, online-safety assessment, advertising review, safeguarding and sector expertise.

The amount should follow scope, not a generic percentage. A public service likely to be accessed by children and a closed adult professional network present different questions. Both still need evidence for their conclusion.

Security costs span supplier due diligence, identity, administrative controls, monitoring, response and recovery. The National Cyber Security Centre's cloud security principles provide assessment questions without pricing or approving a product.

Privacy work continues after launch through rights requests, retention, access review, incident handling and new uses. The Information Commissioner's Office's accountability framework can help identify governance activities, but the organisation must estimate them using its own design and responsibilities.

Expose hidden and contingent work

Create a separate register for costs that depend on events. Examples include:

For each, estimate likelihood only where evidence supports it, then show consequence and response. Some high-impact risks belong in organisational contingency or insurance rather than the community's ordinary operating line.

Do not hide uncertainty in a rounded contingency percentage. Name the uncertain assumption and show how the total changes. This gives the owner a decision, such as narrowing the first cohort or removing a complex integration.

Budget exit at the start

Termination may require notice payments, member communication, data export, archive decisions, content review, reconstruction, parallel running, supplier assistance and deletion verification.

Test a representative export. Count posts, attachments and accounts only after checking relationships, visibility and permissions. A file that contains every record may still be expensive to use if it loses threading or group context.

Decide which material moves, remains read-only or is deleted under an established rule. Budget human review for content that cannot be classified automatically. Include the service required while the new route is prepared.

A worked example budget

A worked example shows the arithmetic behind the method. Every figure is illustrative, not a market rate. It describes an English membership body with 8,000 registered members, one public forum and no self-hosting.

Assume a loaded people cost of £40,000 per full-time equivalent, taken from payroll rather than from a salary survey. Use your own figure, because the people line moves with volume, handling time and loaded cost.

All amounts are illustrative and exclude VAT. Do not treat them as a market rate, because the drivers in the last column set the real numbers. The contingency line comes from the risk register, not from a flat percentage of the total.

Supplier pages commonly show prices excluding VAT. VAT on community software and management services is normally charged at the standard rate of 20% across the UK. An organisation that cannot recover VAT should budget the inclusive amount, and partial recovery needs finance's own calculation.

Build three connected views

Build three tables from one set of inputs, so the views agree. Separate tables must not produce three different totals.

Assign a source, accessed date, confidence and reviewer to every material amount.

Run sensitivity on the factors most likely to move the decision. Member registrations may affect one software model, while contribution volume and report complexity affect staffing. Implementation uncertainty can dominate the first year even when steady operation is predictable.

Evaluate value without forcing a number

Connect financial benefits through a measured route. A peer-support answer may reduce direct support only if the member receives an appropriate response and does not require the same contact later. Page views are not ticket deflection.

For each attributable financial benefit, calculate:

eligible volume x measured change x attributable share x unit value

Test low, central and high assumptions. Community members may already be more committed than non-members, so a retention difference is not automatically caused by participation.

The government's Magenta Book concerns evaluation of public interventions, while HM Treasury's Green Book concerns public-sector appraisal. A commercial organisation should not copy their parameters. Their attention to counterfactuals, options, uncertainty and evaluation is still a useful methodological check.

Keep valuable outcomes without credible monetary conversion as separate evidence. Member access, learning, safety and trust should not acquire invented pound values merely to enter a formula.

Control and update the budget

Obtain approval from the service owner and finance, plus specialist sign-off for material assurance lines. Record which assumptions would trigger reforecasting. Do not wait for annual planning when activity or supplier terms have moved substantially.

Compare actual invoices and staff effort with the original drivers. If product colleagues repeatedly answer questions or moderators spend longer on appeals, bring that work into the next forecast. Investigate whether the process, scope or measure should change.

Retain versions and source dates. Prices, employment costs, taxes, volumes and regulatory expectations can move. The reliable output is not one permanent total; it is a transparent model in which another reviewer can replace an input, follow the calculation and understand which decision changes.

Before you act

Common questions

Why should the service boundary be written before prices are requested?

Different boundaries cannot share a meaningful cost comparison. See Define what the budget includes for the record to keep before asking suppliers for quotes.

How should recurring people costs be calculated?

For recurring work, calculate activity volume multiplied by handling time multiplied by loaded people cost. Use a range for both volume and time, because a routine welcome and a complex harmful-content report should not share an average. Finance should supply the loaded cost for each role, including pension, National Insurance, recruitment, equipment and overhead.

What should be budgeted for exit?

Budget exit before launch and test a representative export. Count posts, attachments and accounts only after checking relationships, visibility and permissions. Decide which material moves, remains read-only or is deleted under an established rule. Budget exit at the start sets out the work, from notice payments to deletion verification.