When a company buys back shares, the seller is taxed on the excess over the capital originally subscribed as a distribution, at dividend rates, unless section 1033 CTA 2010 applies. Capital treatment applies automatically to an unquoted trading company where the purchase benefits the trade and the seller passes the residence, five year ownership, substantial reduction and 30% connection tests. Advance clearance under section 1044 is optional but usual.

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What is the default tax treatment for the seller?

Section 1000(1)B CTA 2010 treats any distribution of a company’s assets in respect of shares as a distribution, except the part that repays share capital (CTM17510). On a buyback, the amount paid above the capital originally subscribed for the shares, including any share premium paid on subscription, is therefore taxed like a dividend (CTM17505). The capital element is still proceeds for capital gains tax, but the amount charged to income tax is taken out of the proceeds under section 37 TCGA 1992 (CG58610), which often leaves no gain or a small loss.

For 2026 to 2027 the dividend rates above the £500 dividend allowance are 10.75% basic rate, 35.75% higher rate and 39.35% additional rate (GOV.UK, Tax on dividends). See dividend allowance and tax rates.

When does capital treatment apply instead?

Section 1033(1) says a payment on a purchase of own shares is not a distribution if the company is an unquoted trading company, or the unquoted holding company of a trading group, and Condition A or Condition B is met. The wording is not elective: if the conditions are met the payment is capital whether or not anyone wanted that, and if one fails it is income. Condition B covers purchases where substantially the whole payment is used to pay inheritance tax on a death within two years, and only where the tax could not otherwise be paid without undue hardship (section 1033(3) and (4)). Most buybacks rely on Condition A, which HMRC’s guidance breaks into three stages.

Stage Test Section
Basics Company unquoted and trading or holding company of a trading group 1033
Basics Seller UK resident in the tax year of purchase 1034
Basics Shares owned for five years, or three if inherited 1035, 1036
Reduction Seller’s interest, with associates, falls to no more than 75% of what it was 1037
Reduction Seller not connected with the company afterwards 1042
Purpose Wholly or mainly to benefit the trade, and not part of a scheme to share in profits without a dividend or avoid tax 1033(2)

For the ownership period, earlier acquisitions are matched first and earlier disposals are matched last in, first out, to give the longest possible period. Time a spouse or civil partner living with the seller held the shares counts too, where the shares passed between them while they were living together.

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How is the substantial reduction test worked out?

The test compares the seller’s share of the issued share capital immediately before and after the purchase, remembering that the purchased shares are normally cancelled. HMRC’s own example: a seller holds 400 of 1,000 £1 shares (40%) and sells 250 back. Afterwards they hold 150 of 750 (20%). Seventy five per cent of 40% is 30%, so the test is met. A parallel test applies to entitlement to profits, and if the company is in a group the test is applied to the seller’s interest in the group.

Associates are added in: spouses or civil partners living together, children under 18 and their parents, and certain connected companies and nominees. This is where family companies most often fail. In HMRC’s example, husband and wife each own 500 of 1,000 shares and he sells all of his. Combined, they held 100% before and still hold 100% after, because she now owns every remaining share, so there is no reduction and the payment is income.

How does the connection test catch partial sales?

Section 1042 requires that immediately after the purchase the seller is not connected with the company or any company in its group, with associates’ interests added in. HMRC’s guidance describes connection as holding or being entitled to acquire more than 30% of the issued ordinary share capital, loan capital or voting power, or being entitled to more than 30% of the assets on a winding up. In HMRC’s example a seller with 500 of 1,000 shares sells 250: the 75% test is passed, but 250 of 750 is 33.3%, so the connection test fails.

What does HMRC accept as benefiting the trade?

HMRC’s guidance accepts the trade benefit test is usually met where a disagreement among shareholders is harming the business and the dissenter leaves entirely, or where an unwilling shareholder wants out and the others want to stop the shares going to an unacceptable buyer. Examples given include an outside equity investor withdrawing, a controlling shareholder retiring to make way for new management, and personal representatives or legatees of a deceased shareholder. It is unlikely to be met if the company is not buying all the seller’s shares or the seller keeps a directorship. HMRC does not object to a retiring director keeping up to 5% of the issued share capital for sentimental reasons.

How do you apply for advance clearance?

Under section 1044 a company may apply before the payment for HMRC to confirm that section 1033 will, or will not, apply. HMRC’s manual at CTM17570 notes clearance is not a statutory requirement, but in practice it is the norm. Under section 1045 the application must be in writing; HMRC can ask for further particulars within 30 days and must give its decision within 30 days of the application or of receiving those particulars. A clearance is void if the application did not fully and accurately disclose all material facts (section 1045(6)).

HMRC’s checklist for a Condition A application asks for the company’s details and tax reference, the shares, price and payment method, confirmation that Part 18 Companies Act 2006 is being followed, a full shareholder list with relationships, the reasons for the purchase and the trading benefit, the seller’s residence and ownership period, confirmation of the reduction and connection tests, and the latest accounts. Send it to reconstructions@hmrc.gov.uk or by post to BAI Clearance, HMRC, BX9 1JL. A section 1044 application can be combined with one under section 701 ITA 2007 for the transactions in securities rules (CTM17570).

After the payment, a company treating it as within section 1033 must make a return to HMRC within 60 days, and a connected person who knows of a scheme for the seller to keep sharing in profits must notify HMRC within 60 days (section 1046).

How big is the difference?

Illustration only. A retiring director subscribed £10,000 for her shares and the company buys them for £200,000 in 2026 to 2027. To keep it simple, ignore income tax bands and assume no other gains.

Outcome Taxable amount Tax
Income: distribution of £190,000, all at 39.35% after the £500 allowance £189,500 £74,568
Capital at 24% after the £3,000 annual exempt amount £187,000 £44,880
Capital with Business Asset Disposal Relief at 18% £187,000 £33,660

The 18% Business Asset Disposal Relief rate applies to qualifying disposals from 6 April 2026, if the seller meets the separate Business Asset Disposal Relief conditions.

What mistakes cost capital treatment?

  • Paying in instalments or leaving the price on loan account. CTM17505 says a valid purchase needs full cash payment at the time; otherwise the shares are not treated as cancelled. Staged buybacks therefore need careful structuring.
  • Ignoring a spouse’s or minor child’s shares in the reduction and connection tests.
  • Keeping the seller on as a director or consultant without considering the trade benefit test.
  • Assuming an investment heavy company is trading.
  • Missing the 60 day return.

The company law steps, funding and Stamp Duty on the return are covered in our page on company share buybacks, and the bookkeeping in accounting for a purchase of own shares.

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Reviewed by Christine Anderson, Broker, Solar Protect. Last reviewed 8 October 2026. Part of Accountapedia, the Solar Protect guide to UK tax and accounting. This page is general information, not personalised advice.