How to structure a company sale to minimize tax on the proceeds

Two transactions with the same purchase price can leave the seller with very different after-tax proceeds. In a share sale, tax usually arises at the owner level, while an asset sale may first be taxed at the company level and again when the proceeds are distributed. The result also depends on tax residence, cost basis, holding period, consideration structure, and available exemptions. If the analysis begins after signing the LOI, changing the transaction structure may no longer be possible without additional risks. In this article, we explain how to structure a company sale lawfully, calculate net proceeds, and avoid unnecessary tax costs.

Start with the seller’s tax position

Tax planning starts not with the buyer’s jurisdiction but with identifying who is selling the business and where that seller is tax resident. The same shares may be taxed differently when sold by an individual, operating company, holding company, partnership, or trust.

• The tax residence of the seller and target company;
• The transaction object: shares, individual assets, or a business as a going concern;
• The acquisition cost and documented tax basis;
• The holding period for the shares or assets;
• The applicable capital gains or corporate income tax rate;
• Available participation exemptions, rollover reliefs, or other benefits;
• Another country’s right to tax the proceeds as the source state.

The corporate tax rate alone does not provide the answer. According to OECD Corporate Tax Statistics 2026, the average statutory rate across 146 jurisdictions is 21.2%. Rates are at least 30% in 25 jurisdictions, while 11 have no corporate income tax or apply a zero rate. However, sale proceeds may be taxed as capital gains, ordinary income, dividends, or a combination.

Gross purchase price must also be distinguished from net proceeds. Debt, transaction costs, management incentives, and escrow amounts may reduce the price. Tax may follow different rules and does not always decrease proportionally.

The initial analysis should produce a tax model for each permitted transaction structure. It should show tax at the seller and target levels, payment timing, and cash remaining after closing.

Share sale vs asset sale

The choice between selling shares and assets usually has the greatest impact on the tax outcome. Sellers and buyers often prefer different models, so their consequences should be calculated before agreeing on the headline price.

Share sale

In a share sale, the owner sells an interest in the target company. Tax is usually calculated on the difference between the consideration and the tax basis of the shares, allowing for eligible transaction costs. In some jurisdictions, a corporate seller may claim a participation exemption if ownership, holding period, and subsidiary status requirements are met.

This model is often simpler for the seller: proceeds go directly to the shareholder, while the operating company does not sell its assets or distribute the price. However, the buyer acquires the company with its historical tax, regulatory, and contractual liabilities. It may therefore require broader warranties, a tax indemnity, or a lower price.

The buyer also usually receives no automatic step-up in the tax basis of the target’s assets. Future depreciation and amortisation continue using the existing values, which may make a share deal less attractive.

Asset sale

In an asset sale, the company transfers individual assets, contracts, IP, inventory, or the entire operating business to the buyer. The target recognises a gain or loss on each transferred asset. Purchase price allocation determines how much of the price relates to depreciable assets, goodwill, inventory, and other categories.

After the company pays tax, the owner may face a second tax charge when the proceeds are distributed as a dividend, liquidation payment, or other income. VAT, sales tax, stamp duty, real estate transfer tax, and costs of transferring licences and contracts may also arise.

A buyer often prefers an asset deal because it can select the assets and liabilities it acquires and obtain a new tax basis for future deductions. The seller should consider this benefit when negotiating the price. If the asset structure creates higher tax, the difference may be covered through the purchase price or a tax gross-up, but only if expressly agreed in the transaction documents.

Reliefs and deferrals that may reduce tax

Lawful tax reduction is available only when the conditions of the relevant jurisdiction are met. Having a holding company or completing a pre-sale restructuring does not guarantee an exemption.

Depending on the seller and transaction structure, the following may apply:

1. Participation exemption. A corporate shareholder may fully or partly exempt a gain from selling a subsidiary if the minimum ownership, holding period, tax residence, and activity requirements are met.
2. Share-for-share exchange. The seller transfers shares to the buyer or a new holding company in exchange for equity. Under certain regimes, the gain is deferred until the new shares are sold.
3. Qualifying merger or reorganisation. An eligible merger, division, or transfer of assets may qualify for tax deferral. For example, the EU Merger Directive provides tax-neutral treatment for certain cross-border reorganisations involving EU companies.
4. Rollover or reinvestment relief. Some countries defer tax when proceeds or gains are reinvested in qualifying business assets or a new company within a set period.
5. Reliefs for individual owners. Founders or retiring shareholders may benefit from reduced rates, lifetime allowances, or exemptions based on the holding period and management involvement.
6. Use of available tax losses. Verified losses may reduce a company’s taxable gain in an asset sale, but change-of-control and loss-trafficking rules may restrict their use.
7. Deferral is not a permanent exemption. Under a rollover, the original gain is normally transferred to the tax basis of the new asset and taxed when that asset is sold. Similarly, proceeds received tax-free by a holding company may create a liability when distributed to the owner as a dividend or liquidation payment.

Pre-sale restructuring should be completed in advance for genuine commercial reasons. Creating an intermediary company shortly before closing, after finding a buyer and agreeing the main terms, increases the risk of anti-abuse rules. Documents should confirm the business purpose, substance, decision-making process, and actual functions of the new structure.

Cross-border tax and treaty issues

In an international transaction, review the domestic law of each connected jurisdiction and then the applicable double tax treaty. A treaty normally does not create a new tax. It allocates or limits existing taxing rights.

Which country may tax the gain

Article 13 of the OECD Model Tax Convention forms the basis of many bilateral treaties. Under the general model, gains from selling ordinary shares are often taxable in the seller’s country of tax residence. However, a specific treaty may preserve the source state’s taxing rights.

Special rules commonly apply to shares deriving most of their value from immovable property. The OECD Model allows taxation in the property’s jurisdiction if, during the 365 days before the sale, over 50% of the share value came directly or indirectly from that property. Source taxation may also apply to permanent establishment assets or under specific local rules.

Withholding obligations, exit tax, filing requirements, and foreign tax credit procedures must also be checked. Even if a treaty exempts the gain in one country, the seller may still need to file a return or obtain advance clearance.

Treaty benefits and anti-abuse rules

A tax treaty cannot be selected only for an attractive rate. The BEPS Multilateral Instrument covers over 100 jurisdictions and changes how many bilateral treaties apply. The principal purpose test may deny a treaty benefit if obtaining it was one of the arrangement’s main purposes and granting it would conflict with the treaty’s objectives.

An intermediate holding company must have a genuine connection with its jurisdiction. Tax authorities may examine its place of management, directors’ authority, employees, expenses, bank accounts, and actual control over the proceeds.

A structure created only to route the sale price through a treaty jurisdiction may lead to additional tax, interest, and penalties. Cross-border planning should therefore consider economic substance, the structure’s history, and when the sale decision was made, not only the formal ownership chain.

How consideration and deal terms affect tax

The purchase price is not always paid in full at closing. The form and timing of consideration may change when income is recognised, how it is taxed, and how much the seller ultimately receives.

Tax modelling should separately examine:

1. Cash at closing. This normally creates an immediately measurable gain, although the taxable amount depends on cost basis, deductions, and local rules.
2. Deferred consideration. Delaying payment does not always defer tax. Some regimes require the full contractual value to be recognised at closing, even if payment comes later.
3. Earn-out. A contingent payment may be taxed when determined and received or valued on the transaction date. If it depends on the founder continuing to work, it may be treated as employment income rather than sale proceeds.
4. Seller financing. Interest on a promissory note is usually treated separately from the capital gain and taxed as interest income.
5. Rollover equity. Exchanging some shares for equity in the buyer or new group may defer tax if the transaction meets the applicable rollover regime.
6. Escrow and holdback. Tax timing depends on whether the seller controls the funds and how conditional the payment right remains.
7. Non-compete and consulting payments. Payments for restrictive covenants or future services may receive different tax treatment and no capital gains relief.

Transaction documents should align the purchase price allocation, earn-out calculation, and responsibility for pre- and post-closing taxes. In an asset deal, allocation affects the seller’s taxable gain and the buyer’s future deductions, so their interests may differ.

A tax covenant and indemnity determine who bears the target’s historical liabilities. A gross-up clause may compensate for withholding but increases the other party’s costs and may itself create another taxable payment.

The seller should compare offers by after-tax net present value, not only headline price. Lower cash at closing may be better than a large earn-out if payment is uncertain and tax arises before the proceeds are received.

Pre-sale tax planning checklist

The tax structure should be determined before signing the LOI because agreed commercial terms may limit the ability to change the seller, transaction object, or form of consideration.

Before starting the sale:

• Confirm the tax residence of the seller and target;
• Calculate the tax basis of the shares and assets;
• Compare net proceeds from a share and asset sale;
• Check exemptions, holding periods, and rollover conditions;
• Analyse treaties, withholding, and exit tax;
• Assess earn-outs, escrow, and deferred payments;
• Prepare valuations and business purpose documents;
• Identify filing, reporting, and payment deadlines.

Each option requires a separate calculation covering the purchase price, deductible costs, tax liability, payment timing, and cash available to the seller. If restructuring is planned, corporate and regulatory approvals should be obtained in advance, and the structure must be implemented in practice.

The final structure should consider not only the lowest rate but also the likelihood of obtaining relief, compliance costs, and the risk of a tax challenge. Savings based on an unconfirmed exemption should not be included in expected proceeds as a guaranteed result.

How Key2Law helps structure a tax-efficient company sale

Key2Law team advises owners preparing domestic and cross-border company sales. We align the transaction structure, corporate requirements, and applicable tax rules to identify a lawful way to reduce the tax burden and calculate net proceeds accurately.

When preparing a transaction, Key2Law can:

• Compare the tax outcome of a share and asset sale;
• Review exemptions, reliefs, and holding periods;
• Analyse cross-border treaties and anti-abuse rules;
• Assess the consequences of pre-sale restructuring;
• Structure earn-outs, rollovers, and deferred consideration;
• Align purchase price allocation and tax clauses;
• Prepare corporate approvals and transaction documents;
• Coordinate tax modelling and pre-sale due diligence.

If you plan to sell a company, contact Key2Law before signing the LOI. We will help compare permitted structures, identify tax risks, and organise the transaction to preserve as much of the proceeds as possible without artificial arrangements.

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This material is for informational purposes only and does not constitute legal, tax or investment advice. Licensing, capital and conduct requirements depend on the jurisdiction, financial instruments and the broker’s actual activities. Obtain advice tailored to your business before adopting or changing an execution model.