Selling Your Business: Asset Sale vs Share Sale, and the Tax Relief Most Sellers Miss

Selling a business you've built is rarely just a single negotiation over price — the structure of the deal itself has real legal and tax consequences that shape what you actually walk away with, and getting this wrong can cost considerably more than a poorly negotiated purchase price.

The two ways a business sale is typically structured

Share sale. The buyer purchases the shares of the company itself, stepping into the existing legal entity exactly as it stands — its contracts, its assets, its liabilities, and its history. The business itself doesn't change hands in a legal sense; ownership of the company that owns the business does. This is generally simpler to execute for an established, straightforward business, and is often what sellers prefer, since it represents a genuinely clean exit from the entity as a whole.

Asset sale (sale of business as a going concern). The buyer instead purchases specific assets — equipment, stock, intellectual property, contracts, goodwill — that make up the business, rather than the company itself. The seller's original company continues to exist, potentially retaining liabilities the buyer didn't want to inherit. Buyers frequently prefer this structure specifically because it lets them "cherry-pick" what they're acquiring, avoiding inherited risk from the seller's company's past — outstanding disputes, historical liabilities, or obligations the buyer has no visibility into.

This tension — sellers generally favouring the clean exit a share sale provides, buyers generally favouring the risk containment an asset sale provides — is often exactly what gets negotiated in structuring a deal, sometimes resolved through warranties and indemnities in a share sale rather than switching structures entirely.

The tax difference this creates

The structure chosen has real tax consequences for both sides, not just legal ones. On a share sale, where shares have been held for at least three years, section 9C of the Income Tax Act deems the proceeds to automatically be of a capital nature — meaning the sale is taxed under capital gains tax rules rather than as ordinary income, which is generally the more favourable treatment for the seller. An asset sale can trigger a more complex mix of tax consequences on the seller's side — potential income tax on any wear-and-tear previously claimed being "recouped" on sale, and capital gains tax on the portion of the sale price that represents a genuine capital gain on the assets sold — which is exactly why the two structures aren't tax-equivalent even where the overall sale price is similar.

The relief most eligible sellers don't realise exists

If you are 55 or older and disposing of a small business (or an interest in one) with a market value of business assets not exceeding R15 million, a capital gains tax exclusion of R2.7 million is available against the gain on that disposal — a genuinely significant relief specifically aimed at business owners exiting later in life, often as part of retirement. This exclusion was materially increased in the 2026 Budget: the exclusion amount rose from R1.8 million to R2.7 million, and the maximum qualifying business asset value rose from R10 million to R15 million, both effective from 2 March 2026 — the first adjustment to this relief since it was originally introduced. A seller who qualifies and doesn't know this relief exists risks paying materially more capital gains tax than necessary on what may be the single largest financial transaction of their working life.

The corporate approvals a share disposal can trigger

If the sale constitutes all or the greater part of a company's assets or undertaking, the Companies Act requires the seller's shareholders to approve the transaction by special resolution (a 75% vote) — this isn't optional formality for a genuinely major disposal; it's a statutory requirement protecting minority shareholders from a majority pushing through a transaction that fundamentally changes what the company actually is or owns.

What actually needs doing beyond the headline deal terms

• Proper due diligence, from both sides — the buyer verifying what they're actually acquiring, and the seller ensuring their own records (financial, tax, employment, contracts) are in good order before a buyer's due diligence process exposes gaps at the worst possible moment in negotiations.
• A properly drafted sale agreement, specific to the structure chosen — a share sale agreement and an asset/going-concern sale agreement are materially different documents, and using a generic template for either risks missing the specific protections each structure actually needs.
• Employee considerations — particularly in an asset/going-concern sale, where transferring employees' existing employment terms and continuity of service typically needs specific handling under labour law, not simply left to informal assumption.
• Notifying and updating the relevant registrations — CIPC records, SARS eFiling access and the Public Officer if the entity itself is changing hands, and any sector-specific licences or registrations this series has covered elsewhere that don't automatically transfer with a change of ownership.

Sources: general South African company law and practice on asset sale vs share sale deal structures, section 9C of the Income Tax Act (three-year holding period for automatic capital-nature treatment of share proceeds), the Companies Act's special resolution requirement for disposing of all or the greater part of a company's assets or undertaking, and SARS's Budget 2026 FAQ confirming the small business disposal capital gains tax exclusion increase (R1.8m to R2.7m exclusion, R10m to R15m maximum business asset value, both effective 2 March 2026, available to sellers aged 55 or older). This is general information, not tax or legal advice — selling a business is a significant transaction that should involve an attorney and an accountant from early in the process, not brought in only once terms are largely agreed.

A worked example

A 58-year-old business owner sells their small manufacturing business, with total business assets valued at R12 million, structured as a share sale. Because the shares have been held for well over three years, section 9C deems the proceeds capital in nature. Being over 55 and the business assets falling comfortably under the R15 million threshold, the seller qualifies for the R2.7 million small business disposal exclusion against their capital gain — a materially larger relief than the R1.8 million that would have applied before the 2026 Budget change, meaningfully reducing the capital gains tax owed on what is, for this seller, effectively a retirement-funding transaction.

Frequently asked

Do I need to be retiring to qualify for the small business disposal exclusion, or just over 55? The exclusion is available to qualifying sellers aged 55 or older disposing of a small business meeting the value threshold — it isn't strictly conditioned on retirement itself, though it's commonly used in exactly that context.

What if I'm selling a business I own but am under 55? The specific small business disposal exclusion doesn't apply below age 55, though other general capital gains tax principles and exclusions may still apply to the sale — worth working through the full picture with an accountant regardless of your age.

Can the small business disposal exclusion be used more than once in a lifetime? This relief is generally intended as a once-in-a-lifetime exclusion (potentially aggregated across a limited number of qualifying disposals within specific rules) rather than something claimed repeatedly on multiple unrelated business sales — confirm the specific aggregation rules with an accountant if you've used it before.

Does the buyer or the seller usually prefer a share sale? Sellers more commonly prefer a share sale for the cleaner exit and generally more favourable capital-gains treatment; buyers more commonly prefer an asset sale to avoid inheriting unknown liabilities — the actual structure agreed often reflects which side has more negotiating leverage, or a compromise addressing both sides' concerns through warranties and indemnities.

How long does selling a business typically take from agreement to completion? This varies considerably by deal size and complexity, but proper due diligence, drafting, and any required approvals (including a special resolution where applicable) mean even a straightforward small business sale rarely completes in days — budgeting realistic time into any sale process avoids unnecessary pressure to rush decisions with real financial consequences.