Retention bonus

Definition

For a buyer acquiring an SME, 30-60% of value-creation upside sits in the first 12-18 months post-closing. Departure of a commercial director, a head technician, a key developer or a major-account manager in that window can mean €100-500k of EBITDA impact: enough to dismantle a whole deal thesis. Retention bonuses are the standard contractual mitigation.

Benelux structure in 2026 has three standard variants. First, "cliff-vested retention": full bonus paid at one fixed moment (typically 12 or 18 months post-closing) provided the employee is still in service then. Most common structure, simplicity is the strength. Second, "linear vesting": bonus earned and paid in tranches (e.g. 33% per 6 months over 18 months). Keeps the employee continuously incentivised but is administratively more complex. Third, "performance-tied": part cliff, part tied to pre-defined milestones (EBITDA target, customer retention, system migration). Rare outside upper-mid-market due to complexity and dispute risk over milestone fulfilment.

The amounts. For C-level (CFO, COO, CTO of an SME): 75-150% of annual salary for 18-month retention. For senior management (sales directors, head of engineering): 50-100% for 12-18 months. For key specialists without management title (top sales reps, head developers, key relationship managers): 25-50% for 12 months. Above these ranges the programme is often perceived negatively by employees outside it: social dynamics matter.

Tax treatment in Benelux context. In Belgium retention bonus is taxable as compensation in the year of payment, at full progressive rates plus social-security contributions. In the Netherlands same regular wage tax applies. Both regimes mean a €50k gross bonus typically yields €25-30k net to the recipient. Some Belgian structures try to optimise via "warrants" or "management-company payment": works only for specific profiles and requires case-by-case tax validation.

The who-pays question is a negotiation point sellers often lose if not made explicit upfront. Two standard positions: (a) buyer pays: economically logical since the buyer enjoys the retention value, but it typically comes from a reduction in the headline price (so still effectively from the seller via deal structuring); (b) seller pays: typically via a separate pool from the proceeds paid to management pre-closing. The Benelux mid-market norm: buyer pays formally but it's netted in the price negotiation.

Worked example

A Mechelen manufacturer was sold to a French PE fund for €17m. Three key figures were identified as material for the first 18 months post-closing: the COO (€95k salary, 100% retention bonus = €95k), the head of engineering (€75k, 80% = €60k), and the top account manager (€55k, 50% = €27.5k). Total retention pool: €182.5k. Structure: cliff-vested at 18 months, with pro-rata payout on buyer-initiated termination without cause. Pool was agreed upfront between buyer and seller, formally paid by the acquired entity (so economically via post-closing EBITDA), but netted in the price negotiation: the seller accepted €17m headline rather than €17.18m to cover the retention pool. Result: 100% retention of the three key figures through transition, no material EBITDA erosion, deal thesis proven.

When it matters

In every acquisition where 2-5 key figures carry material operational value: which is virtually every Benelux SME transfer above €3m EV. Three negotiation points: (1) decide early who is in the programme (typically CFO/COO + 2-4 senior figures, not more), (2) negotiate cliff-vesting for simplicity unless complexity is genuinely needed, (3) ensure pro-rata payout on buyer-initiated termination is explicit in contract: otherwise a buyer can terminate at month 17 and frustrate the programme.

Frequently asked

What's a typical retention bonus for the COO of an SME?

75-150% of annual salary for 18-month retention. For a COO on €95k that's €70-140k bonus. The exact percentage depends on how material the COO is to the transition thesis and how high the departure risk is. In founder-CEO transitions where the COO takes over daily management: 150% justified. In stable professional teams: 75-100%.

Who pays the retention bonus: buyer or seller?

Formally typically the acquired entity (post-closing so the buyer). But in practice the retention pool is netted in the price negotiation: the seller accepts a lower headline price to cover the pool. This must be discussed explicitly in the LOI, otherwise late-stage negotiation tensions arise.

What if the employee resigns before the vesting date?

Typically loses the full bonus. Well-drafted contracts cover three scenarios: (a) voluntary resignation before vesting = zero, (b) buyer-initiated termination without cause = full bonus pro-rata or even accelerated, (c) termination for cause = zero. The definition of "cause" must be explicit: otherwise dispute risk at activation.