Packaged, hourly or outsourced? How accounting business models differ on risk and revenue

An accounting practice can sell recurring records work, defined compliance tasks, specialist advice or an outsourced finance function.

What to take away

Compare the operating models

These indicative bands are typical for England and depend on scope, complexity, location and staff seniority.

These models can coexist, but shared staff and systems must not blur responsibility.

Define what the customer retains

An engagement should specify records, dates, approvals and decisions expected from the client. "Full service" is too vague. State who keeps source documents, operates bank access, approves payroll, confirms estimates and signs submissions.

HMRC's standard for agents describes expectations concerning integrity, competence, contemporary records, information security and third-party input. It applies to the tax-agent population described by HMRC and does not replace law or professional-body standards.

Match price to variability

Fixed pricing can work where transaction volume, entity count, record quality and exceptions are bounded. Define thresholds and the change process. A low subscription with undefined clean-up work can create rushed corrections or disputes.

Project fees suit a discrete outcome, but milestones should distinguish analysis, client decisions and submissions. Time charging can reflect uncertain work while giving the customer less cost certainty. Estimate ranges, approval points and reporting reduce that risk.

For a directory, charging providers for visibility creates a conflict that must be conspicuous. Separate paid placement from editorial selection and never imply that payment proves competence or regulatory standing.

Treat statutory audit separately

Statutory audit is not an add-on that any bookkeeping firm may sell. The FRC's Key Facts and Trends 2025 identifies the recognised supervisory and qualifying bodies and reports a distinct public-interest-entity audit-firm population.

ICAEW and ACCA are among the recognised supervisory bodies for audit, and their members must meet their registration and independence requirements.

Confirm registration, independence and applicable standards before including audit in a service model. Do not use a general accounting qualification as evidence of audit authority.

Choose through unit economics and risk

Model the work unit: transaction, payroll run, entity, filing, advisory project or managed-finance month. Include review, correction, software, supervision, insurance, data security and non-billable communication.

Illustrative payroll run: 20 employees at £5 per employee per month gives £100 revenue. Software costs £2 per employee, staff time is 2 hours at £25 per hour, review is 0.5 hour at £40 per hour. Total cost is £110, a £10 loss at that price.

Pilot with a narrow customer segment. Measure accurate completion, exceptions, client effort, write-offs and deadline risk. Expand only after the practice can state what it does, what it refuses and how a changing customer moves to a different service tier.

Review customer concentration and recurring deadline exposure. A model can appear profitable while relying on one client, one reviewer or a few intense filing weeks. Stress the plan for absence, software failure and late records. Reserve capacity for corrections and queries instead of selling every nominal hour.

Document when work passes to a specialist and whether that relationship is a subcontract, referral or separate engagement. Tell the customer who holds information and responsibility at each stage.

Before you act

Common questions

When can fixed pricing work for an accounting service?

Fixed pricing can work where transaction volume, entity count, record quality and exceptions are bounded. The article advises defining thresholds and the change process. A low subscription with undefined clean-up work can create rushed corrections or disputes, so variability must be matched to price.

What must a practice check before including statutory audit in a service model?

Statutory audit is not an add-on that any bookkeeping firm may sell. The article says to confirm registration, independence and applicable standards before including audit in a service model, and not to use a general accounting qualification as evidence of audit authority. The FRC identifies recognised supervisory and qualifying bodies.