Selling a business is not like selling a property. You are selling a living organism: years of accumulated decisions, relationships built with patience, employees who have stayed through difficult periods, clients who call you directly. For a founder who has invested two decades into building something, the sale process triggers emotions that no financial adviser can afford to ignore — the ambivalence between relief and loss, the pride in what has been achieved and the vertigo of what comes next.
This guide does not try to reduce that complexity to a flowchart. Its purpose is to accompany you from the first question — “is now the right time to sell?” — to the closing of the transaction, with the technical honesty that the most important financial decision of your life deserves.
Is Now the Right Time to Sell?
There is no perfect moment, but there are clear signals that the window is open. Recognising them in time is the difference between selling on your own terms and selling under pressure.
The market is at a high. Valuation multiples fluctuate with the economic cycle, interest rates and the appetite of private equity funds. When credit is cheap and fund dry powder is abundant, buyers compete with each other and prices rise. When rates climb or credit tightens, multiples contract and buyers become selective. Selling in a rising market can mean a difference of 2x-3x EBITDA in the final price — a gap that no operational improvement will compensate for if you wait.
Founder fatigue after 15-25 years. The entrepreneur who has built a business from scratch reaches a point that the Anglo-Saxon world calls founder fatigue: the energy for continued innovation diminishes, risk tolerance falls, and the pleasure of leading gives way to obligation. This fatigue, if unacknowledged, eventually affects the business itself. Selling from a position of strength — before fatigue erodes results — is a decision of business wisdom, not surrender.
An unsolicited approach from a competitor or fund. Many transactions begin with an unexpected call: a competitor looking to eliminate a rival, a fund that has identified your business as a platform for a sector consolidation strategy, a foreign group seeking entry into the Spanish market. The unsolicited approach is rarely the best price available — whoever calls first knows there is no competition — but it is a signal that the market has assigned a value to what you have built, and one that merits exploring through a structured process.
Capital requirements for a step-change that cannot be achieved alone. Some businesses have reached their organic ceiling: the next level of growth requires investment in technology, entry into new markets or integration with another operator. When that capital is not accessible without excessive dilution or unsustainable debt, a full or partial sale to a buyer who brings resources and network is often the most rational growth path.
Succession planning: no clear successor in the family. Spanish family businesses continue to face the same generational challenge as thirty years ago — roughly 70% do not survive the leadership transition. When no family member wants or is able to take over, prolonging family ownership can damage both the business and the family. A managed sale to a third party allows you to achieve a fair valuation and design a transition that protects the employment and culture you have built.
Preparation: the 12-18 Months Before Going to Market
The preparation phase is by far the most determinative of the final price. Sellers who go to market without proper preparation leave money on the table: buyers identify weaknesses in due diligence and use them to negotiate price reductions. With 12-18 months of advance work, most of those adjustments are avoidable.
Clean the accounts and normalise EBITDA. The accounts of a privately held Spanish business typically blend business reality with legitimate tax optimisation: personal expenses of the founder run through the company, family member salaries above or below market rates, related-party leases at non-market prices. The buyer will analyse these items and adjust them. It is better to do so first, presenting an adjusted and normalised EBITDA that accurately reflects the underlying cash generation of the business — documented and defensible.
Formalise verbal agreements with key clients and suppliers. A business that generates 40% of its revenue from three clients with no written contracts is a business with unquantified concentration risk. The buyer will see it and penalise it. Formalising those verbal arrangements — or replacing them with framework agreements with reasonable renewal and notice terms — transforms risk into predictability and predictability into value.
Reduce dependency on the founder. This is the most delicate work, and paradoxically the most valuable. If the business depends on the founder’s personal presence to retain clients, make operational decisions or maintain key supplier relationships, the buyer will perceive a transition risk that reduces the price or imposes a prolonged earn-out. Systematically delegating over 12-18 months — building an autonomous management team, documenting processes, formalising commercial relationships — increases perceived business value more effectively than any improvement in last-quarter EBITDA.
Resolve pending litigation. Buyers are averse to judicial uncertainty. An outstanding employment dispute, a contractual claim from a client or an unresolved tax inspection becomes a condition precedent, a price retention or a value adjustment. Resolving these before going to market — even at a cost — is almost always the financially correct decision.
Update corporate registry filings, board minutes and accounting records. Formal irregularities — unsigned board minutes, overdue accounts filings, capital increases not yet registered — cause delays and costs in legal due diligence that the seller ends up bearing in time and price. A legal review of the company’s registry status before the process allows these issues to be identified and remedied without calendar pressure.
Prepare the virtual data room. The data room is the documentary repository the buyer uses during due diligence. Organising it before the process — with employment, tax, corporate, contractual and property documentation ordered and accessible — conveys professionalism, accelerates the process and reduces unexpected findings. A well-prepared data room can shorten the due diligence phase by three to four weeks, which in a competitive process may be decisive.
The Process Step by Step
A professional sale process is structured in eight phases. The total timeline for a mid-complexity transaction in Spain typically runs between four and nine months.
Phase 1 — Independent valuation (2-3 weeks). The starting point is understanding the market value of your business with methodological rigour: DCF (discounted cash flow), comparable transaction multiples and, where applicable, the value of underlying assets. The valuation does not only set the asking price — it identifies the value drivers that carry most weight and allows the preparation effort to be directed accordingly. A realistic valuation — neither optimistic nor conservative — is also the vaccine against misaligned expectations that destroy processes before they begin.
Phase 2 — Preparation of the information memorandum (2-4 weeks). The information memorandum presents the business to potential buyers: its history, business model, competitive position, historical and projected financial data, management team, client base and growth opportunities. It typically runs 30-60 pages. It is complemented by a teaser — a two-to-three-page anonymous summary — used for initial contact with potential buyers before the company’s identity is disclosed.
Phase 3 — Identification and approach of buyers (3-6 weeks). The adviser builds a long list of potential buyers — strategic buyers (competitors, industrial groups), private equity funds and family offices — and approaches them with the teaser. The selection of whom to contact, in what order and with what message is one of the most concrete areas of adviser value: the wrong buyer can leak information to the market prematurely; the right ones can create the auction dynamic that maximises price.
Phase 4 — NDA and distribution of the information memorandum. Interested parties sign a non-disclosure agreement and receive the full information memorandum. This phase typically takes 2-4 weeks, during which the adviser manages questions from potential buyers and assesses the genuine level of interest from each.
Phase 5 — Indicative offers (LOI): analysis and selection (2-3 weeks). Interested buyers submit a Letter of Intent or Indicative Offer with the estimated price, the transaction structure (share deal or asset deal), the principal conditions and the proposed timetable. The adviser analyses the offers comparatively — not only on price but on certainty of closing, conditions precedent and earn-out risk — and the seller selects one or two buyers to advance to due diligence. Competition between buyers at this stage is the primary mechanism of value creation in the process.
Phase 6 — Buyer due diligence (4-8 weeks). The selected buyer accesses the data room and conducts a comprehensive review of the business: financial, tax, employment, legal and operational. This phase is demanding for the seller, involving hundreds of information requests, management meetings and the challenge of managing team anxiety in the face of uncertainty. A well-prepared data room and an experienced advisory team significantly reduce the burden and the negative findings.
Phase 7 — SPA negotiation and closing conditions (3-6 weeks). The Share Purchase Agreement is the sale contract. Its negotiation is technical and can be intense: final price and adjustment mechanism, representations and warranties, liability caps, escrow and conditions to closing. This is the phase where specialist M&A legal counsel plays a critical role. A poorly negotiated SPA can turn an apparently good price into a net result significantly below expectations.
Phase 8 — Closing and post-closing period (earn-out and transition). Closing is the signing of the notarial deed and payment of the price. But the transaction does not end there: if an earn-out exists, the seller remains tied to the business for one to three years under agreed financial targets. The transition period — during which the founder transfers knowledge to the new management team — is critical for business continuity and, where there is an earn-out, for collection of the deferred price.
Tax on the Sale: Structure Is Everything
The difference between correct and incorrect tax planning in a business sale can amount to several million euros. This is the area in which acting 12-18 months in advance generates the highest return.
Share deal by an individual: IRPF 19-28%. If the founder sells their shares directly, the capital gain — the difference between the sale price and the original acquisition cost of the shares — is taxed within the Spanish personal income tax (IRPF) savings base: 19% on the first €6,000, 21% on €6,000-50,000, 23% on €50,000-200,000, 27% on €200,000-300,000, and 28% on amounts above €300,000 (rates in force since 2023). For a sale at €5 million with an acquisition cost of €100,000, the effective tax burden exceeds 27%.
By way of comparison, the UK has Entrepreneurs’ Relief (Business Asset Disposal Relief) capped at 10% on the first £1 million; France has a flat 30% (prélèvement forfaitaire unique); Germany applies a 25% Abgeltungsteuer plus solidarity surcharge. Spain’s rates are not dramatically out of line, but the absence of a meaningful reinvestment relief for individuals makes the holding structure argument particularly compelling.
Share deal via a holding company: the art. 21 LIS participation exemption. If the shares of the operating company are held by a holding company — with a participation of at least 5% maintained for at least one year — the gain from the sale can benefit from the participation exemption under Article 21 of the Corporate Income Tax Act (LIS). This exempts 95% of positive income from Spanish corporate income tax. Effective taxation at the holding company level is approximately 1.25% (25% CIT on the 5% that is not exempt). Subsequent distribution to the founder as an individual generates additional IRPF, but the deferral and the ability to reinvest within the holding structure are significant advantages.
This is the most compelling argument for establishing a holding structure well before a planned sale. The typical planning horizon is 12-18 months minimum; the holding company must have been actively holding the shares — not created on the eve of the transaction — to satisfy the one-year minimum holding period.
If you are an expat who has built a business in Spain while remaining resident in another country, or who has recently changed tax residence, the analysis becomes more complex: exit taxes, treaty provisions and the Spanish exit tax (art. 95 bis LIRPF) for departing residents all interact with the sale. This is not an area for generic advice — the structure must be designed around your specific residency history and future plans.
Asset deal: different tax treatment for each asset. When the buyer prefers to acquire assets rather than shares — to avoid assuming hidden liabilities or contingent obligations — the seller’s tax position is more complex. Depreciated assets are taxed as gains within the selling company’s corporate income tax at the standard 25% rate. Real estate assets additionally generate the municipal capital gains tax (plusvalía municipal). Distributing the net proceeds to the founder as a dividend adds a further layer of IRPF. The asset deal is generally less tax-efficient for the seller.
Reinvestment and deferral. Spanish tax law does not provide a general reinvestment exemption for individuals selling shares equivalent to those available in some other countries. However, routing the sale through a holding structure allows deferral of the ultimate tax liability and reinvestment of the sale proceeds into new business projects with tax efficiency.
Non-compete clause: taxed as employment income. It is common for the SPA to include separate compensation for the seller’s commitment not to compete for a specified period. Fiscally, this compensation does not qualify as a capital gain — taxed at savings IRPF rates — but as employment income, taxed at the marginal general rate, which can exceed 47% in some autonomous communities. This differential can be substantial and must be negotiated with full awareness of its fiscal implications.
For a detailed analysis of pre-sale tax planning, see our tax planning services.
Due Diligence from the Seller’s Side
Due diligence generates more anxiety for sellers than any other phase of the process, especially those experiencing it for the first time. The feeling of having your business audited by the buyer’s team of lawyers and accountants — with access to all documentation — can feel invasive and destabilising. With adequate preparation, it is manageable.
Vendor due diligence: the advantage of going first. An increasing number of sellers commission their own due diligence before going to market (vendor due diligence, or VDD). The VDD allows problematic findings to be identified and resolved before the buyer discovers them, the information to be presented in a structured and coherent way, and the process to be accelerated by reducing the time the buyer spends on analysis. A well-executed VDD reduces the price adjustments negotiated in the final phase and projects an image of professionalism and transparency that builds buyer confidence.
Data room management: what to include and what to protect. The data room should be comprehensive but not indiscriminate. Strategically sensitive information — named client lists, product development details, third-party confidentiality agreements — should be shared progressively, as the buyer advances through the process and the probability of closing increases. A data room access protocol with permission levels and activity logging protects the seller and is standard practice in professional transactions.
The most common findings and how to prepare. Financial due diligence in Spain most frequently identifies: differences between the presented EBITDA and the normalised EBITDA (non-recurring expenses booked as ordinary, or vice versa); tax contingencies from aggressive deductions or undocumented transfer pricing; latent employment liabilities (employees on incorrect contracts, uncompensated overtime, incorrect professional classifications); and problems in the ownership or registration of intangible assets (trademarks, software, databases). Identifying these in advance — and resolving or documenting them — is the most efficient way to protect the price.
The impact of findings on price. When due diligence identifies contingencies the seller has not disclosed or resolved, the buyer uses them to negotiate price adjustments. Market practice places typical adjustments from due diligence findings at 5-15% of the initially agreed enterprise value. In poorly prepared transactions, adjustments can exceed 20%. The investment in preparation — a VDD, a prior legal review, account normalisation — has a direct return in the net price received.
Negotiating the SPA: 7 Clauses That Protect the Seller
The Share Purchase Agreement is a technical contract of 80 to 200 pages governing every aspect of the transaction. The seller who arrives at this phase without specialist M&A legal counsel is in a position of severe asymmetry against the buyer’s legal team. These are the seven clauses that deserve the greatest attention.
1. Price mechanism: locked box versus completion accounts. The locked box mechanism fixes the price at a reference balance sheet date in the past and protects the seller from subsequent adjustments, provided there has been no value extraction (leakage) between that date and closing. The completion accounts mechanism adjusts the price at closing based on actual working capital, net debt and available cash at that date. Locked box gives the seller greater certainty; completion accounts give the buyer more control. The choice has practical implications that should be discussed with your adviser well before SPA negotiations begin.
2. Representations and warranties: time and monetary limits. Representations and warranties are the seller’s statements about the state of the business at the time of sale. A breach gives the buyer the right to claim indemnification. The seller must negotiate: a time limit (typically 18-24 months from closing for general warranties, seven years for tax warranties), a maximum monetary cap (typically 10-20% of the price for general claims), a de minimis threshold that filters out small individual claims, and an aggregate basket that filters out claims below a minimum aggregate amount.
3. Escrow or price retention. It is common for the buyer to require that a portion of the price — typically 10-20% — be held in escrow for 12-24 months as security against warranty claims. For the seller, this means not receiving the full price at closing. Negotiating the retained amount, the retention period and the release conditions is one of the most important battles in SPA negotiations.
4. Earn-out: risks for the seller. An earn-out links a portion of the price to the achievement of future targets — EBITDA, revenue, number of clients — over one to three years post-closing. For the buyer it is a risk-sharing mechanism; for the seller, it is a conditional promise tied to variables they no longer control once the business has been transferred. If you accept an earn-out, negotiate: precise and auditable definitions of the metrics, protections against management or accounting changes that could affect the calculation, and an independent dispute resolution mechanism.
5. Non-compete clause: reasonable duration and compensation. The buyer will require the seller not to compete for a period — generally two to three years — in the same geographic and activity area. Two years is the standard in Spain; more than three years may be challenged as an excessive restriction of freedom of enterprise. The compensation for this commitment should be expressly documented in the SPA and, as noted, will be taxed as employment income rather than as a capital gain.
6. Material Adverse Change (MAC). The MAC clause allows the buyer to withdraw from the transaction without penalty if an extraordinary event occurs that materially deteriorates the value of the business between SPA signing and closing. The seller should negotiate a restrictive MAC definition — one that excludes general market changes, sector fluctuations or macroeconomic events — to reduce the risk of the buyer using this clause as an exit route upon a change of mind.
7. Conditions precedent: competition clearance and change of control. Some transactions require authorisation from the CNMC (Comision Nacional de los Mercados y la Competencia, Spain’s competition authority) or the European Commission if applicable concentration thresholds are exceeded. The CNMC filing threshold in Spain is triggered when the combined parties have a Spanish turnover exceeding certain levels, or when the transaction could significantly impede competition. Additionally, many of the company’s contracts — with clients, suppliers or lenders — may include change of control clauses requiring the counterparty’s prior consent. Identifying these conditions before signing the SPA — and ensuring the timetable and responsibilities for obtaining the necessary consents are clear — avoids unpleasant surprises in the closing phase.
A Real Reference Point
In a recent transaction in the food sector, the BMC team advised the seller in a sell-side process that closed at 6.2x EBITDA. The final price was 15% below the seller’s initial target — but the competitive process between three strategic buyers identified €8 million of integration synergies, an agreed transition plan that guaranteed the continuity of the management team, and a payment structure without an earn-out that gave the seller complete certainty over the price on the day of closing.
The gap between the seller’s target price and the final price was not a failure of the process. It was the result of a realistic initial valuation, rigorous data room preparation that eliminated the typical due diligence price adjustments, and an SPA negotiation that protected the seller across all warranty clauses.
The full details of this process are set out in our cross-border acquisition case study in the food sector.
The Most Important Decision of Your Business Life
Selling your business is probably the most important financial decision of your life. And unlike most business decisions, there is no second chance: you will only sell this business once.
That is why advance preparation — with 12-18 months of runway — is not an option for anyone who wants the best possible outcome. It is the difference between selling the business you have built on your own terms and ceding control of the process to a buyer who knows exactly where the weaknesses are.
At BMC, we accompany business owners through sell-side processes with integrated financial, tax and legal advisory teams. From the initial valuation to the SPA closing, our objective is to ensure the price you receive reflects the real value of what you have built — and that the contractual terms protect that price in the years that follow closing.
If you are considering selling your business, or simply want to understand what it is worth and what a sale would involve, the first step is a no-obligation conversation. Explore our services in mergers and acquisitions, business valuations and due diligence.
