As a business grows, one question eventually lands on every owner, founder, or manager's desk:
“How do we actually run our financial operations?”
At first, the answer seems obvious. You have a bookkeeper. You have an accountant. Things have always worked well enough. But as revenue increases, transactions grow, suppliers multiply, hiring accelerates, and the financial pace of the business intensifies, the old setup begins to strain.
Suddenly, you find yourself considering options you’ve never had to think about before:
Should we upgrade our bookkeeper?
Should we hire a finance manager?
Should we outsource this whole thing?
Most founders choose the wrong path - not because they lack insight, but because they’re trying to solve structural problems with task-based roles.
This blog breaks down the three most common approaches growing businesses take, what each option solves, where each option fails, and why an outsourced finance function is usually the best fit for businesses in the growth phase.
Let’s walk through the three paths founders typically choose.
In summary:
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1. The Part-Time Bookkeeper
Feels simple, affordable, and logical. Until the business grows.
Most founders and business owners expect bookkeepers will keep everything up to date, ensure transactions are accurate, and reduce admin workload.
Here’s what bookkeepers actually do well:
- Recording transactions
- Reconciling accounts
- Maintaining the ledger
- Managing basic AP/AR tasks
- Providing accurate historical data
Bookkeepers are essential. But they are not finance operators, nor should they be expected to be. As the business grows, the finance environment becomes more complex than a bookkeeper can reasonably manage.
The role is not designed to create or manage:
- financial workflows
- approval structures
- cash flow processes
- system oversight
- reporting cadences
- proactive financial coordination
The result is a role doing its job correctly, but still leaving major operational gaps the business can't see until they appear as errors, delays, or financial surprises.
When a part-time bookkeeper is appropriate:
- Early-stage and low-volume businesses
- Businesses under $400k with simple operations
- Environments where the founder still directly handles financial oversight
Beyond that point, the cracks begin to show quickly.
2. The Finance Manager
Feels like the “grown-up hire,” but is usually premature.
When a business feels real financial strain, founders often conclude that they need to hire a Finance Manager. It feels like the senior, sensible, adult solution - someone who can “take over finance,” - a single person who will solve everything.
What a Finance Manager actually does well:
- Management-level reporting
- Oversight of established processes
- Interpretation of financial performance
- Supervising finance staff
- Supporting strategic decisions
In the right environment, a Finance Manager is incredibly valuable, but this option fails for small–mid-sized businesses:
- The role relies on existing systems (which most small businesses don’t have).
A Finance Manager is not hired to build workflows, systems, or operational finance structures from scratch. They are hired to manage an existing finance function. Without one, they spend their time patching holes, not improving performance.
- They are expensive - and often underutilised.
A full-time salary or even a part-time senior role is costly. Most small businesses can’t provide enough volume or strategic scope to justify the investment.
- The business becomes dependent on a single person.
If they leave, all knowledge, processes, and decisions leave with them.
When a Finance Manager is appropriate:
- Revenue above ~$5m
- A fully functioning finance department already in place
- Clear strategic requirements beyond operational oversight
Most businesses below this level don’t need a Finance Manager - they need operations.
3. The Outsourced Finance Function (OFF)
The structure and expertise which growing businesses actually need.
An outsourced finance function provides the system, structure, workflows, reporting cadence, and financial ownership that sit between bookkeeping and accounting - the piece most small–mid-sized businesses don’t realise they’re missing.
What an outsourced finance function provides:
- End-to-end AP/AR management
- Workflow and approval design
- System setup, oversight, and optimisation
- Weekly and monthly reporting rhythms
- Cash flow processes and visibility
- Coordination between bookkeepers, accountants, and internal teams
- Accountability across the entire finance operation
This is not bookkeeping. This is not accounting.
This is operational finance - the function that keeps the business financially healthy as it grows.
Why an outsourced finance function is the best option for SME:
- It solves the actual problem: lack of structure.
You don’t need more labour. You need financial operations designed and owned end-to-end.
- It’s far more affordable than hiring internally.
You receive an entire finance team’s capability for a fraction of the cost of one internal senior hire.
- It scales with the business.
As volume increases, processes and reporting evolve with you - not after things break.
- It supports bookkeepers and accountants, not replaces them.
Everyone stays in their lane, and the finance function ties everything together.
The Founder’s Dilemma: Who Do You Hire for Finance?
When growth exposes operational cracks, founders instinctively look for a person rather than a structure, someone who can “tidy things up,” “take ownership,” or “fix finance.” But the problem isn’t a lack of people. The problem is a lack of a finance function.
Without systems, workflows, approvals, reporting rhythms, and financial ownership, no individual (no matter how talented) can stabilise the financial environment alone.
So which option is right for you?
Most growing businesses don’t need a Finance Manager yet, and they’ve already outgrown what a bookkeeper alone can support.
What they actually need is a finance function - the operational structure that keeps financial systems running smoothly, ensures reporting remains reliable, and gives founders clarity and confidence as the business expands.
This is why the outsourced finance function model has become the ideal solution for businesses in their growth phase. It delivers structure, expertise, and financial coordination without requiring the business to take on premature internal hires.
Kirbyko exists to support the exact moment where businesses outgrow basic bookkeeping and ad-hoc processes.
We partner with founders who want clarity, structure, and consistency - not more spreadsheets or more people to manage. Our team becomes your embedded finance operator, managing everything from workflows and approvals to reporting, systems, and financial coordination.
If you’re ready to move away from reactive problem-solving and towards stable, scalable financial operations, we can help you build the structure your business needs to grow confidently.
