The UK has moved to bolster the attractiveness of its capital markets by scrapping the 0.5% Stamp Duty Reserve Tax (SDRT) on shares in companies newly listed on the London Stock Exchange for their first three years of trading. The exemption, announced as part of Chancellor Rachel Reeves latest budget package, is designed to stimulate new listings, encourage equity raising and restore confidence in the City after a prolonged slump in UK initial public offerings.

Landmark tax break to lure fresh listings

Under the reform, investors buying shares in companies during the first three years after their London listing will not pay the usual SDRT charge, which currently applies to electronic share purchases at a rate of 0.5% of the transaction value. By removing this levy for newly listed stocks, the Treasury aims to cut frictional trading costs and make London a more competitive venue versus rival markets such as New York, Amsterdam and Paris, which have been attracting high?profile flotations in recent years.

The government has framed the move as a flagship element of its wider action plan to stimulate economic growth and reinvigorate the UKs capital markets ecosystem. Officials argue that a targeted, time?limited exemption focuses the benefit on growth companies that are raising capital, rather than providing an open?ended tax break for the broader market.

Context: London fights to reclaim IPO momentum

Londons equity markets have faced mounting pressure as several large UK?based businesses have opted to list or shift primary listings overseas, citing deeper pools of capital, higher valuations and more supportive investor bases abroad. While global IPO activity has been subdued amid higher interest rates and geopolitical uncertainty, London has underperformed key peers, fuelling concern among policymakers and market participants about the Citys long?term competitiveness.

The SDRT exemption is intended to complement a series of regulatory and structural reforms, including work by the Financial Conduct Authority (FCA) to streamline listing rules, promote a UK equity consolidated tape to improve price transparency, and reduce unnecessary reporting burdens for firms while preserving market integrity. Together, these initiatives seek to present a more attractive proposition to both issuers and investors, with the government explicitly linking capital?markets reform to its broader growth strategy.

Impact on issuers, investors and the City

For prospective issuers, the removal of stamp duty on secondary trading in their shares during the crucial first three years after listing could support liquidity and valuations by lowering transaction costs for investors. Investment banks and advisers are expected to highlight the change in boardroom discussions as they pitch London as a more viable venue for mid?cap and high?growth companies that may previously have considered dual listings or foreign exchanges.

For institutional and retail investors, the exemption reduces the cost of building and adjusting positions in newly listed companies, potentially making UK IPO allocations more attractive within diversified portfolios. Market participants will be watching closely to see whether the tax break translates into a visible uptick in deal activity, particularly in sectors such as technology, life sciences and energy transition, where London has been keen to deepen its issuer base.

Questions over cost, targeting and effectiveness

The reform raises several policy questions that will shape how it is received in the City. The first is the fiscal cost of the exemption and how it is justified within a tight budgetary environment. The government has argued that any near?term loss of SDRT receipts could be offset over time by higher economic activity, broader tax bases and deeper capital markets, but detailed costings and assumptions will be scrutinised by economists and opposition parties.

A second issue is whether a three?year window is sufficient to influence listing decisions, especially for larger multinationals whose choice of venue hinges on valuation, analyst coverage, regulatory stability and currency considerations as much as on transaction taxes. Some market commentators may argue that more fundamental reforms to pensions investment, corporate governance and research coverage are needed to rebuild the UKs equity culture.

Part of a broader capital-markets reset

The exemption sits alongside other recent UK initiatives to modernise financial regulation and support growth. The FCA is consulting on a UK equity consolidated tape, which would aggregate trade data across venues to give investors a clearer picture of true market liquidity and pricing, addressing concerns that UK trading volumes are being underestimated. Better data and transparency are expected to reinforce the attractiveness of London listings if implemented effectively.

In parallel, the authorities are pursuing targeted changes to derivatives and reporting regimes under UK EMIR and MiFIR, with the stated aim of cutting red tape for firms while maintaining robust oversight of market abuse risks. The cumulative effect of these measures is intended to signal that the UK remains committed to open, competitive and well?regulated capital markets in the post?Brexit environment.

What to watch next

• How many companies explicitly cite the SDRT exemption as a factor in choosing London for upcoming IPOs and secondary listings.
• Whether there is a measurable increase in trading volumes and liquidity in newly listed UK stocks during their first three years.
• The governments published estimates of the revenue impact of the exemption and any conditions on its renewal or extension.
• Feedback from global investors on whether the tax change materially alters their allocation decisions to UK equities.
• The interaction between the tax break and ongoing FCA reforms to listing rules and market infrastructure, including the equity consolidated tape.

For now, the move to scrap stamp duty on new listings represents one of the clearest signals yet that policymakers are prepared to use the tax system, as well as regulation, to fight back in the global contest for capital.