Every business with recurring legal needs eventually faces the same question: should we keep an in-house legal team or hire outside counsel matter by matter? There is no universal formula that fits every company — this is a practical business decision, not something fixed by any statute.
There is no fixed "cost-differential formula"
To be clear from the outset: Vietnamese law prescribes no cost-differential formula between in-house and outside counsel. Lawyers' fees are set by agreement — Article 56 of the Law on Lawyers 2006 (as amended in 2012) imposes no price cap on corporate advisory services. All figures compared below are market reference levels drawn from practical experience, not legal requirements.
2026 market reference levels
| Item | Reference level (VND/month, excl. VAT) |
|---|---|
| In-house legal officer (junior–mid) | 15–25 million |
| Legal Manager / Head of Legal | 25–60 million |
| Outside retainer (fixed monthly) | 8–50 million |
| Outside counsel hourly rate | 0.5–2 million/hour |
Note: in-house salary figures exclude recruitment, training, benefits, mandatory insurance, and turnover risk. Outside retainers typically include expert costs but may generate out-of-scope fees when a matter proves more complex than expected.
The break-even framework: when is in-house cheaper?
Practical experience points to two typical scenarios:
- Steady, high-volume, repetitive needs (daily contract review, ongoing operational advice): in-house counsel usually costs less in total, because there is no per-matter margin and no time is lost briefing context to an outsider.
- Episodic, highly specialized or one-off matters (M&A, major disputes, internal investigations): outside counsel is usually more economical, since the company does not carry year-round fixed costs for capacity used only a few times.
The hybrid model: the most common choice
Many mid-size and large businesses now use a combined model: a lean in-house team (1–3 people) handles day-to-day work, while outside counsel is engaged on retainer or per matter for specialized areas. This controls fixed costs while keeping "expert backup" available when major matters arise.
Risks of looking only at the numbers
- Capability risk: in-house staff may lack depth in new areas (international tax, IP, anti-corruption investigations).
- Independence risk: in sensitive situations (internal complaints, disputes with management), an independent outside opinion carries particular value.
- Retainer contract risk: vaguely defined scope invites disputes over out-of-scope fees — the contract should list covered items specifically and state how extra fees are calculated.
Frequently asked questions
Which option suits a small business (under 20 employees)? In practice, most small businesses use an outside retainer or matter-by-matter engagement, since their workload is not enough to fill a full-time legal position.
Is an 8 million/month retainer enough? It depends on scope: low retainers usually cover only basic oral/written advice within limited hours. Read the clauses on hour caps and out-of-scope fees carefully.
When should we switch from outside counsel to in-house? When annual outside-counsel spending approaches or exceeds the cost of one in-house legal officer (salary plus related costs), that is the signal to consider it. Many companies transition gradually through the hybrid model.
Legal sources
- Law on Lawyers 2006 (65/2006/QH11), as amended 2012 — Article 56 (lawyers' fees by agreement), still in force at the time of writing.
- All cost figures in this article are 2026 market reference levels, not legal requirements.
Need advice on the right legal model for your business? The FLAT Law Firm team advises on in-house legal structures, retainer design, and cost reviews tailored to your company's actual scale of operations. Contact us at contact us.
The information in this article is general reference based on practical experience; it is not a legal requirement and not legal advice for any specific matter.
Transparency note: This article was drafted by FLAT Law Firm's AI content production system and is undergoing internal review (AI Legal Council QA and owner approval before publication). It has not been reviewed by a human lawyer.