Decision guide · Bookkeeping
Outsourced Bookkeeping vs In-House Bookkeeper
The short answer
For most small and mid-sized businesses, outsourced bookkeeping is the better choice: it costs less, never goes on holiday or off sick, and removes the burden of supervising the work yourself. An in-house bookkeeper costs £14,000–£22,000 in the UK or $45,000–$60,000 in the US before employer costs — and someone still has to manage and check them. An in-house hire wins once bookkeeping volume genuinely fills a full role and you have the senior finance person on site to direct it.
Outsourced Bookkeeping vs In-House Bookkeeper — side by side
| Dimension | Outsourced Bookkeeping | In-House Bookkeeper |
|---|---|---|
| Annual cost | From £1,800/yr UK · from $5,940/yr US (fixed-fee retainer) | £14,000–£22,000 UK · $45,000–$60,000 US salary, plus employer NI/payroll tax, pension, holiday and equipment |
| Cover for holiday and sickness | Built in — the work continues regardless | None by default — the books stall when one person is away |
| Continuity if they leave | High — the provider, processes and software stay in place | Low — knowledge walks out with the person; a gap and a rehire follow |
| Supervision burden | Low — the provider owns quality and method | High — someone capable must direct, review and correct the work |
| Skill level | Established processes and current software knowledge across many clients | As good as the one person hired, and only as current as their training |
| Scalability | Scale the fee up or down as transaction volume changes | Fixed cost; under-used in quiet months, stretched in busy ones |
| Best fit | Bookkeeping volume below a full role; no senior finance person to supervise | High daily volume that fills a role, with an FD or controller on site to direct it |
When Outsourced Bookkeeping is the right call
Choose outsourced bookkeeping when the volume of bookkeeping does not justify a full-time salary — which is the reality for most businesses below mid-size — or when you have no senior finance person available to supervise an in-house hire. Outsourcing converts a fixed payroll cost into a flexible fee, removes holiday and sickness gaps, and means the records are kept to a consistent standard by people who do this all day. Crucially, it removes the hidden cost most owners underestimate: the hours you or a manager spend directing and checking a junior bookkeeper. The work arrives done, not delegated.
When In-House Bookkeeper is the right call
Choose an in-house bookkeeper when bookkeeping volume genuinely fills a full-time role — high daily transaction counts, complex stock, multi-currency, or a busy sales ledger that needs someone reachable in the building every hour. An in-house hire also makes sense when you already have a finance manager, controller or FD on site who can direct, review and develop them, so the supervision burden is absorbed by an existing role rather than landing on the owner. If you need a finance person physically present for ad-hoc tasks beyond bookkeeping, in-house wins on availability.
The honest verdict
For most small and mid-sized businesses, outsourced bookkeeping is the more economical and more resilient choice — lower cost, no holiday or sickness gaps, no rehire risk, and none of the supervision burden that an in-house junior quietly creates. The decision tips toward in-house only when volume fills a real role and a senior finance person is already on site to direct it. BlackpeakCFO provides outsourced bookkeeping from £150/month in the UK and from $495/month in the US — done to chartered standard by Stuart Wilson, ACMA CGMA, so the work needs no supervision from you.
"Owners price an in-house bookkeeper by the salary. The real cost is the salary plus employer costs plus the hours someone senior spends checking the work — and that last part never shows up on the budget."
Stuart Wilson, ACMA CGMA — founder, BlackpeakCFO
Common questions
Is outsourced bookkeeping cheaper than hiring in-house?
For most small and mid-sized businesses, yes — and by more than the headline gap suggests. An in-house bookkeeper costs £14,000–£22,000 in the UK or $45,000–$60,000 in the US in salary alone, before employer National Insurance or payroll tax, pension, holiday cover, equipment and software. Outsourced bookkeeping from £150/month in the UK or $495/month in the US is a fixed, all-in fee with no employment overhead.
What happens to my books when an in-house bookkeeper is on holiday or off sick?
By default, the work stalls until they return — which is one of the strongest arguments for outsourcing. An outsourced provider builds cover into the service, so reconciliation, invoicing and the monthly close continue regardless. Continuity is not an add-on; it is structural.
Doesn't an in-house bookkeeper understand my business better?
They develop familiarity over time, but a good outsourced provider closes that gap quickly with proper onboarding — and brings something an in-house junior usually cannot: broad experience across many businesses and current knowledge of accounting software. The trade-off is proximity for breadth, and for most businesses breadth wins.
Who supervises an outsourced bookkeeper?
The provider does — that is the point. Quality control, method and software currency are the provider's responsibility, not yours. With an in-house junior, someone capable in your business has to direct and review the work, and that supervision time is a real but hidden cost. With BlackpeakCFO the bookkeeping is done by a chartered management accountant, so there is nothing for you to check.
When does an in-house bookkeeper actually make sense?
When bookkeeping volume genuinely fills a full-time role — high daily transaction counts, complex inventory, multi-currency — and you already have a finance manager, controller or FD on site to direct and develop them. At that point the supervision burden is absorbed by an existing role, and having someone present every hour has real value. Below that, outsourcing is usually the better economics.
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