1/4 oz Britannia Platinum Coin

The UK's CGT-Exempt Fractional Platinum Coin

The 1/4 oz Platinum Britannia is struck by The Royal Mint in 999.5 fine platinum, carrying a face value of GBP 25. Its defining characteristic for UK investors is the Capital Gains Tax exemption that comes with UK legal tender status. This makes it the only 1/4 oz platinum coin on the market that is exempt from CGT on disposal, a significant advantage given that platinum's price must overcome both 20% VAT on purchase and any CGT liability before an investor sees a net gain.

The Platinum Britannia was introduced in 2018, making it a relatively recent addition to the Britannia programme (which began with gold in 1987 and silver in 1997). From 2021 onwards, Britannia coins across all metals carry four anti-counterfeiting features: a latent image that switches between a padlock and trident, surface animation created using picosecond lasers, micro-text reading "DECUS ET TUTAMEN" (an ornament and a safeguard), and tincture lines on Britannia's shield. These make it what The Royal Mint calls "the world's most visually secure bullion coin."

At 1/4 oz (7.78 grams of pure platinum), this is the smallest standard platinum Britannia denomination. The price point is accessible for regular accumulation, and the coin's 22mm diameter makes it compact for storage. Premiums on 1/4 oz platinum are higher as a percentage of spot than on the 1 oz Platinum Britannia, but the CGT exemption partly compensates on the exit side for UK-based investors.

1/4 oz Platinum Britannia Technical Details

Security Features (2021 onwards)

• Latent image: Padlock/trident switch visible at different viewing angles
• Surface animation: Wave pattern behind Britannia, created by picosecond laser at submicron scale
• Micro-text: "DECUS ET TUTAMEN" around Britannia, requires magnification
• Tincture lines: Heraldic colour-depicting pattern on Britannia's shield

These four features are integrated into the coin's design without altering its dimensions or metal content. Pre-2021 Platinum Britannias lack these security measures but remain fully valid legal tender and retain their CGT exemption.

Platinum Britannia Tax Treatment by Country

The Platinum Britannia's UK legal tender status gives it a unique tax advantage among platinum coins. Internationally, it qualifies for the same exemptions as other sovereign-issued 999.5 platinum coins.

• United Kingdom: Subject to 20% VAT on purchase (platinum is not covered by the investment gold VAT exemption). CGT-exempt on disposal because it is legal tender denominated in sterling. Sterling currency is not a chargeable asset for CGT purposes. This applies to all Britannia coins regardless of metal. The annual CGT allowance (currently GBP 3,000) is irrelevant for Britannias since no gain is chargeable. SIPP-eligible: platinum bullion can be held in a Self-Invested Personal Pension with tax relief at the investor's marginal rate.
• United States: IRA-eligible at 999.5 purity (meets the 99.95% minimum for platinum). Must be held by an approved custodian. Capital gains taxed at the 28% collectibles rate.
• Canada: GST/HST exempt at 99.5% purity or above in coin form.
• Australia: GST-free. Platinum coins at 99% purity or above from recognised sovereign mints qualify.
• Singapore: GST-exempt under IPM rules. Platinum coins at 99% purity with legal tender status qualify.
• New Zealand: GST-exempt at 99% purity. No CGT in New Zealand.
• Hong Kong: No sales tax, no import duty, no capital gains tax.
• EU: Standard VAT applies to platinum (17-27% depending on country). Not covered by the EU Investment Gold Directive.

Platinum Britannia vs Other 1/4 oz Platinum Coins

For UK investors, the comparison barely needs making. The Platinum Britannia is the only platinum coin with CGT exemption in the UK. Every other platinum coin, including the 1/4 oz American Platinum Eagle, the 1/4 oz Platinum Kookaburra, and the 1/4 oz Platinum Noble, is subject to both 20% VAT on purchase and CGT on any profit at disposal. The Britannia eliminates the second layer of tax entirely.

Against the American Platinum Eagle, the Britannia trades some US market liquidity for its UK tax advantage. The Eagle has the strongest dealer network in North America, and its brand recognition drives competitive buyback prices from US dealers. For US investors using an IRA, the Eagle's specific Congressional exemption and domestic provenance make it the natural choice. Both share 999.5 purity.

The Britannia's security features (from 2021 onwards) are more advanced than any competing platinum coin. The latent image, surface animation, micro-text, and tincture lines provide four distinct visual authentication methods, none of which require special equipment. The American Eagle's anti-counterfeiting reed pattern (2021+, gold/silver only) and Perth Mint's micro-laser engraving are more subtle measures. For secondary market purchases where provenance is uncertain, the Britannia's visible security gives immediate confidence.

Against the 1/4 oz Gold Britannia, the platinum version shares identical tax treatment (VAT-free for gold vs 20% VAT for platinum on purchase; both CGT-exempt on disposal). The gold version's advantage is that gold carries no VAT, so the entry cost premium above spot is dramatically lower. The platinum version only makes sense for investors specifically seeking platinum exposure who also value the CGT exemption on exit.