When Should an SME Outsource Finance?
When should an SME outsource finance?
Short answer: An SME should consider outsourcing finance when the Managing Director is spending more time on reports than running the business, when the in house team cannot produce timely and reliable management accounts, when the cost of a senior finance hire is hard to justify, or when growth is outpacing the finance function. Most SMEs reach at least one of these triggers between £1m and £10m of turnover.
What "outsourcing finance" actually means
Outsourcing finance does not mean handing over the whole function and hoping for the best. In practice, it is a spectrum. At one end, a bookkeeper handles transactions. In the middle, an outsourced finance partner runs the monthly accounts, cashflow, and reporting. At the other end, a part time Finance Director sits on the leadership team and brings senior financial thinking into strategic decisions.
Most SMEs buy a mix. The point is to get the capability you need at a cost that makes sense for the size of the business.
The five triggers that usually prompt the decision
1. The MD is doing finance work
If the Managing Director is pulling management accounts together, chasing debtors, or reconciling the bank, that is a clear signal. Every hour the MD spends on finance is an hour not spent on customers, strategy, or the team. In most SMEs, outsourcing a defined set of finance tasks pays for itself quickly just by freeing up the MD's time.
2. The in house team cannot keep up
Management accounts arriving six weeks after month end are not management accounts. They are history. If reporting is consistently late, the bookkeeper is overwhelmed, or the business has outgrown the processes that worked at a smaller scale, the finance function has hit its limit. Adding a senior hire is one answer. Outsourcing is often faster and cheaper.
3. You need senior finance capability occasionally, not constantly
Most SMEs do not need a full time Finance Director. They need an FD for a few days a month, particularly around board meetings, fundraising, major deals, and the annual plan. Paying a full time salary for part time requirements is wasteful. A part time or outsourced FD fills the gap properly.
4. Growth is outpacing the numbers
A business growing at 20% or more a year outgrows its finance function faster than almost any other area. What worked at £2m of revenue breaks at £5m. You need better cashflow visibility, proper budgeting, meaningful management accounts, and someone who can talk to a bank about funding. If the finance function has not kept pace, decisions start getting made on gut feel. Outsourcing is often the quickest way to reset.
5. A specific event forces the issue
Preparing for investment, a major loan, a sale of the business, a tax investigation, or the loss of a key finance team member all force the question. An outsourced partner can step in quickly without the delay and risk of a permanent hire.
The three models of outsourced finance
Most SMEs use a blend of these three. The right blend depends on where you are and what you need.
| Model | What it covers | Typical cost range | When it fits |
|---|---|---|---|
| Outsourced bookkeeping | Transactions, bank reconciliation, VAT returns, basic reporting | £500 to £2,000 a month | Micro business or early stage, or where in house is overloaded with transactions |
| Outsourced finance function | Everything above, plus monthly management accounts, cashflow, budgeting, basic commentary | £2,000 to £6,000 a month | Most SMEs between £1m and £10m turnover without a senior finance hire |
| Part time FD | Strategic financial leadership, board reporting, funding, commercial support | £1,500 to £5,000 a month depending on days | Businesses that need senior financial thinking a few days a month, often layered on top of an outsourced finance function |
Costs are indicative for UK SMEs in 2026. Your actual figure depends on complexity, volume, and scope.
What you keep in house and what you hand over
Outsourcing finance well is not binary. Most businesses keep some things in house because the knowledge and relationships are inseparable from the role.
Typical split:
- Kept in house: strategy, customer relationships, sales pipeline, operational decisions, final sign off on accounts and payments, senior recruitment.
- Handed over: bookkeeping, month end processes, management accounts, cashflow forecasting, VAT, payroll processing, reporting, and ideally the FD conversation at board level.
The Managing Director remains accountable for the numbers regardless of who prepares them. A good outsourced partner makes that accountability easier to meet, not harder.
Cost comparison: in house versus outsourced
For most SMEs in the £1m to £10m range, the honest comparison looks like this.
In house team
- Bookkeeper on £30,000 to £40,000.
- Financial Controller on £55,000 to £75,000.
- Part time FD on top when needed, or a full time FD on £100,000+.
Fully loaded cost including employer National Insurance, pension, office, and software is typically £120,000 to £220,000 a year for a function that can produce timely accounts and meaningful reporting.
Outsourced equivalent
- Outsourced finance function covering bookkeeping, month end, management accounts, and cashflow: £3,000 to £6,000 a month.
- Part time FD layered on: £2,000 to £4,000 a month for a couple of days a month.
Typical fully loaded cost is £60,000 to £120,000 a year for comparable output. You also avoid the recruitment cost, the risk of a bad hire, and the overhead of managing a team.
The savings matter but they are not the main reason to outsource. The main reason is capability. An outsourced finance partner brings a team with more combined experience than any one hire, visibility into how other similar businesses run, and better tooling than most small in house teams can afford.
When outsourcing is the wrong answer
Outsourcing is not always right. It is a poor fit when:
- You genuinely need someone embedded in the business every day, and the finance conversations happen in corridors rather than in scheduled meetings.
- You have highly complex operations that require deep institutional knowledge built up over years.
- You want a senior hire for succession or equity reasons.
- You have not yet defined what good finance looks like in your business, and risk outsourcing a broken process.
In the last case, a short engagement to define the operating model before committing to a long term outsourced relationship is usually the better move.
How to choose an outsourced finance partner
Four questions worth asking:
- Who will actually do the work? You want a named team, not a ticket queue.
- What does a typical month look like in their operating rhythm? Good partners run a consistent cycle you can plan around.
- What does their output look like? Ask for sample management accounts and a sample board pack. The quality of the reporting tells you more than any sales pitch.
- How do they handle the handover if things do not work? A confident partner is clear about exit terms from day one.
How AI Finance Partners help
We are the outsourced finance function for a group of SMEs across the South East. For most clients we run bookkeeping, month end, management accounts, 13 week cashflow, and budgeting, and provide a part time FD presence at board level. We use technology to do the mechanical work faster and cheaper than a traditional team can, and put the saved time into the conversations that actually move the business forward.
Frequently asked questions
At what turnover should an SME outsource finance? There is no fixed threshold, but most SMEs start outsourcing elements of finance between £500,000 and £2m turnover, and move to a fuller outsourced model between £2m and £10m. The trigger is usually capability, not size.
Is outsourcing finance cheaper than hiring? Usually yes, once you include fully loaded employment costs, recruitment, software, and management overhead. The more important question is whether outsourcing delivers better capability for the same or lower cost. For most SMEs it does.
Will I lose control of my numbers if I outsource? No, if you choose a partner who reports properly. You sign off the accounts, you approve the payments, you decide on strategy. The partner does the work that gets you to the decision point.
Can I outsource part of finance and keep the rest in house? Yes, and most SMEs do. A common pattern is in house bookkeeping with an outsourced FD, or outsourced bookkeeping and month end with an internal Financial Controller. There is no single right answer.
How long does it take to set up an outsourced finance function? Four to six weeks for a clean transition from an existing in house setup, less for businesses starting from a minimal finance function. The first month is mainly about getting into the detail. By month three the rhythm is in place.
