CFDs vs Stocks: Stamp Duty, CGT and Leverage

Risk warning: CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. The majority of retail investor accounts lose money when trading CFDs. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money. This page is general information, not financial advice. Advertiser disclosure.

A CFD gives leveraged exposure to a share’s price without ownership, while buying the stock makes you a shareholder with dividends and voting rights. CFDs carry no UK stamp duty but cap retail leverage at 5:1; shares incur 0.5% Stamp Duty Reserve Tax and qualify for an ISA or SIPP.

Ownership and leverage

Buy a stock and you own it, with voting rights and dividends paid directly. Trade a share CFD and you hold leveraged exposure only, capped at 5:1 for retail clients under the FCA’s PS19/18 retail rules, with dividends arriving as a cash adjustment. Leverage lets a CFD trader open a larger position for the same cash, and short selling is straightforward, which holding the stock does not allow.

UK tax on CFDs and shares

Buying UK shares incurs 0.5% Stamp Duty Reserve Tax on the purchase, while a CFD carries none, because no share changes hands. Both CFD and share gains fall within Capital Gains Tax for UK residents, and CFD losses can offset capital gains. Shares can be held in an ISA or SIPP, sheltering gains from tax, which CFDs cannot, so the wrapper is a genuine advantage for long-term share holders. Buying £10,000 of UK shares costs £50 in Stamp Duty Reserve Tax on entry; the equivalent £10,000 share CFD position costs none, though both are subject to Capital Gains Tax on any profit. Tax treatment depends on individual circumstances and may change. (SDRT, CGT and wrapper rules per HMRC and gov.uk guidance, checked July 2026.)

Why it matters for a UK trader

Time horizon usually decides the choice. CFDs suit short-term, leveraged or hedging positions, where the no-stamp-duty and short-selling features count. Traders choosing the CFD route should compare best FCA-regulated forex brokers before funding an account, since leverage terms and financing costs vary by provider. Owning shares suits long-term holding, where the ISA or SIPP shelter and the absence of overnight financing matter more than leverage. Many UK investors use both, holding core positions as shares and trading shorter moves as CFDs. For the fund-based alternative, the CFD vs ETF comparison weighs an ETF’s ISA shelter against leveraged exposure.

Common mistakes

Using CFDs for long-term holds piles up overnight financing that a share purchase avoids. Overlooking the ISA shelter on shares gives away a real UK tax advantage. Forgetting that a CFD pays no real dividend or voting right surprises traders who expect shareholder benefits. Reading share CFD broker reviews first sets the right expectations before opening a position. Compare share CFD brokers UK side by side before funding either route. More instrument comparisons live in the education hub.