Stamp duty on share transfers is a tax payable to HMRC when existing shares in a UK company change hands. It applies to the buyer, not the seller, and the obligation to pay arises the moment a stock transfer form is signed. A missed deadline or an incorrectly completed form can result in penalties and, in some cases, leave the buyer unable to register their ownership of the shares at all.
- Stamp duty on paper share transfers and SDRT on electronic transfers both generally apply at 0.5% of the consideration, though thresholds and rounding rules differ.
- Stamp duty is payable only when chargeable consideration exceeds £1,000, with various exemptions and statutory reliefs that can reduce or eliminate the charge.
- Late payment triggers penalties and interest, and an unstamped stock transfer form prevents the buyer being registered as shareholder or proving ownership.
Stamp duty has been around for more than 300 years, and the rules governing share transfers date back to the Stamp Act 1891. When company shares are transferred on paper using a stock transfer form, the buyer pays stamp duty at 0.5% of the price paid for the shares, rounded up to the nearest £5. When shares change hands electronically, a closely related charge called stamp duty reserve tax (SDRT) applies instead.
- Stamp duty applies to paper transfers when using a stock transfer form
- SDRT applies to paperless, electronic transfers.
In practice, most transfers in private limited companies use a stock transfer form, so stamp duty is the more relevant charge for the majority of small business owners. The rate for both is the same: 0.5% of the consideration.
Stamp duty is payable on the purchase of existing shares in a UK company where the consideration paid exceeds £1,000. Below that amount, no duty is due. The duty is calculated on the ‘chargeable consideration’, which is the price actually paid for the shares, not their market value. If you pay £800 for shares worth £5,000 on the open market, the duty is calculated on the £800.
Stamp duty also applies when you acquire an option to buy shares in a UK company, when you take an interest in shares (such as a right to part of the sale proceeds), and when you buy shares in an overseas company that maintains a share register in the UK. The tax is always the buyer’s responsibility.
When it comes to stamp duty on share transfers, several circumstances remove the stamp duty charge entirely. If shares are transferred as a gift with no money or other consideration changing hands, there is no chargeable consideration and therefore no stamp duty. The same applies if the consideration is £1,000 or below.
The following transfers are also outside the scope of stamp duty:
- New shares issued by a company to a shareholder: stamp duty applies only to transfers of existing shares, not to new issues
- Foreign shares in a company that does not hold a UK share register
- ETF shares traded on a recognised stock exchange and meet the relevant conditions
- Transfers qualifying for a statutory relief, including group relief and reconstruction relief
Group relief is particularly relevant where shares are transferred between companies within the same corporate group. Provided both companies are members of the same group at the time of the transfer, the transaction can be exempt from stamp duty. The rules are found in the Finance Act 1930, and a claim for relief must be made to HMRC rather than simply assumed.
When working out stamp duty on share transfers, there are various thresholds to bear in mind. The rate is 0.5% of the chargeable consideration, always rounded up to the nearest £5. So if you pay £1,200 for shares, 0.5% gives £6, which rounds up to £10. If you pay £2,250, 0.5% gives £11.25, which rounds up to £15.
A quick-reference guide:
| Consideration paid | Stamp duty payable |
|---|---|
|
£1,000 or less |
£0 (nil) |
|
£1,001 – £2,000 |
£10 |
|
£2,001 – £4,000 |
£20 |
|
£10,000 |
£50 |
|
£50,000 |
£250 |
|
£100,000 |
£500 |
There is no upper cap on the amount of stamp duty payable. For large share acquisitions, the charge can therefore be significant. It is important to understand the advantages and disadvantages of different share capital structures before you agree to the terms of any transfer.
If you give shares to anyone other than your spouse or civil partner, HMRC treat it as though you sold the shares at full market value on the day of the gift, even though you received nothing. That can mean a capital gains tax bill for the person giving the shares away.
Transfers between spouses and civil partners carry no immediate CGT. The recipient takes on the original purchase price, so the gain is not cancelled; it is just passed on. When they eventually sell the shares, that is when the tax calculation catches up.
For gifts to other family members, there is a potential relief called business asset hold-over relief. Where it applies, the CGT charge is not cancelled but deferred, and the recipient picks it up when they later sell. It is only available for shares in certain unquoted trading companies, and the conditions need to be checked carefully rather than assumed.
When someone buys an existing business, they generally have two choices:
- Buy the shares in the company itself, or
- Buy the company’s assets.
Buying a business through shares means buying the whole company: its contracts, its staff, its debts, and its tax history. Stamp duty is charged at 0.5% of the price paid for the shares. On a £500,000 purchase, that is £2,500. There is no stamp duty land tax on the shares themselves, even if the company owns property.
An asset purchase lets you choose exactly what you are acquiring and walk away from the rest. The stamp duty position is different here: no stamp duty applies to most business assets, but if property is included in the deal, stamp duty land tax applies to that element at the standard rates, which can be considerably higher than 0.5%.
Stamp duty reserve tax (SDRT) applies when shares are transferred electronically, without a physical stock transfer form. It is charged at the same rate of 0.5%, but it applies regardless of the amount paid: the £1,000 threshold for paper stamp duty does not apply to SDRT. The calculation rounds to the nearest penny rather than the nearest £5.
SDRT is typically settled through the CREST electronic clearing system. When a transfer is made via CREST, the system calculates and collects the SDRT automatically. For off-market electronic transfers outside CREST, the buyer must notify HMRC and make payment by the 7th of the month following the transaction. For most transfers in a private company limited by shares, SDRT does not apply. Paper-based transfers using the J30 form attract stamp duty rather than SDRT.
The penalties for late stamping are tiered. HMRC applies the following charges where the stock transfer form is not stamped within 30 days of execution:
- Up to 12 months late: 10% of the duty owing, capped at £300
- 12 to 24 months late: 20% of the duty owing
- More than 24 months late: 30% of the duty owing
HMRC will not charge a penalty below £20. Interest is also charged on any overdue duty, and where the delay is found to be deliberate, HMRC has discretion to increase penalties above the standard rates.
Also, bear in mind that if a stock transfer form is not stamped, the company registrar will not register the buyer as a shareholder. The buyer, therefore, cannot be added to the register of members, the PSC register, or the Companies House record, and cannot formally prove ownership of the shares. Once the form is properly stamped and lodged with the registrar, the company updates its register and issues a new share certificate to the buyer. That certificate, which can be prepared using a free share certificate template for most private company transfers, is the buyer’s formal evidence of ownership.
Several statutory reliefs can reduce or eliminate the stamp duty charge. Unlike exemptions, reliefs require a formal claim to HMRC. The stock transfer form must still be submitted to the stamp office, along with written confirmation of why the relief applies.
The main reliefs for paper share transfers are:
- Group relief – applies to transfers between companies within the same 75% corporate group (Finance Act 1930)
- Reconstruction relief – applies where a company transfers its trade to another as part of a corporate reconstruction
- Acquisition relief – available in certain mergers where shares are issued as consideration
For clients considering a more complex share structure or an intra-group reorganisation, a share administration service can assist with the administrative and filing requirements.
Final Words
The full process for issuing and transferring shares in a company, including the steps that precede and follow the stamp duty payment, involves several additional legal and administrative requirements. The complexity lies in the exemptions, the formal process of claiming reliefs, the interaction between paper stamp duty and SDRT, and the practical consequences of getting any step wrong. A transfer that is not properly stamped leaves the buyer unable to register their ownership, which can cause real difficulties if the shares are later the subject of due diligence, a further transfer, or a dispute.
