Actualizado: 30/06/26
A point comes in every company's life when financial management starts to become too much of a burden. Invoices pile up, tax deadlines loom, and the numbers no longer fit on a spreadsheet managed in spare moments. That's when the key question arises: do we hire our own in-house financial team or entrust that function to an external consultancy?
There is no universal answer. The decision depends on the size of the company, its volume of operations, its growth rate and, above all, how much control management wants to retain over day-to-day finances. Let's look at the factors that should really tip the scales.
What does each option involve
A own finance department means incorporating staff into the team: from an accounting administrator to a controller or a CFO, depending on the needs. This gives the company total control over processes, in-depth business knowledge, and immediate availability to resolve any unforeseen issues.
The External consultancy, for its part, offers a team of specialised professionals who serve several companies at once, usually under a monthly or per-project fee model. The company delegates accounting, tax, and labour management to expert hands without the need to hire, train, or maintain an internal structure.
Factors that should guide the decision
- Size and volume of operations
Small and medium-sized enterprises (SMEs) and the self-employed with a moderate turnover volume rarely require a full finance department. The workload does not justify the fixed cost of several salaries, social security contributions and management tools. In these cases, external consulting is usually the most efficient option.
However, beyond a certain size, the volume of transactions, the complexity of the corporate structure, or the need for constant investor reporting can justify having in-house finance staff. - Real cost, not just the visible one
Hiring your own department involves salaries, social security contributions, ongoing training, management software, and the time management dedicates to supervising the team. An external consultancy, on the other hand, turns that fixed cost into a variable and predictable fee, without the burdens associated with hiring.
It's worth doing the real numbers before deciding: compare the total cost of an in-house team (not just gross salary) against the fees of a consultancy with the level of service the company needs. - Access to specialisation
An external consultancy firm typically integrates specialists in various areas — tax, labour, commercial, accounting — who would be difficult and expensive to bring together within an SME. This is particularly valuable when regulations change frequently, as is the case with taxation or labour law in Spain.
A dedicated in-house department, on the other hand, can offer more specialised insight into a specific business, but rarely covers all disciplines with the same depth unless the company invests in a large team. - Flexibility and scalability
A company's financial needs change over time: an expansion campaign, a funding round, or an internationalisation process can cause a temporary surge in workload. External consulting allows services to be scaled up easily, without the time and costs associated with hiring.
An internal team, on the other hand, can take months to adapt to these peaks in demand, whether by hiring more staff or training them for new roles. - Control and availability
Having your own team means having professionals solely dedicated to the business, present on a daily basis, with immediate access to information and fully aligned with the company's culture. For companies with complex operations or that require quick and constant financial decisions, this can make all the difference.
While external consultancy can be agile, it may not always offer the same immediacy, especially if they manage multiple clients simultaneously. This is why choosing a partner who guarantees clear response times and a trusted point of contact is key.
An intermediate model: partial outsourcing
Many companies are not forced to choose between the two extremes. It is common to combine both options: to keep an internal figure – for example, a finance manager or an administrator – who acts as a liaison, and to outsource the more technical or specialised functions, such as taxation, auditing, or labour consultancy.
This hybrid model allows strategic control to be retained within the company while accessing the expertise and resources of a specialised external team, optimising costs without compromising service quality.
So, which to choose?
In general, external consultancy is often the most sensible option for self-employed individuals, startups, and growing SMEs requiring financial rigour without incurring the costs of an internal structure. An in-house department makes sense for larger companies with complex operations or with control and immediacy needs that justify the investment.
The important thing is not to make the decision solely out of inertia or habit, but to periodically assess whether the chosen model still fits the company's current situation. What works today may no longer work in two years' time, and reviewing this decision in good time can prevent both cost overruns and management bottlenecks.
Do you need help deciding which model best suits your company? At Lever we have a team of specialists in financial, tax, labour and commercial consulting who adapt to the size and needs of each business. Talk to us and we'll help you find the right balance.
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