5 oz Britannia Gold Coin

The Britannia at Five Ounces

The 5 oz gold Britannia is the largest standard denomination in The Royal Mint's Britannia bullion range, containing 156.295 grams of .9999 fine gold. With a GBP 500 face value, it carries the same legal tender status and CGT exemption that makes the 1 oz gold Britannia the default choice for tax-conscious UK gold investors. The difference is scale: a single 5 oz Britannia represents a significant capital outlay, placing it in the territory of high-net-worth private buyers and institutional purchases rather than regular bullion stacking.

The coin shares the annually changing reverse design of the 1 oz Britannia. From 2021 onwards, all Britannia denominations carry four anti-counterfeiting features: a latent image that shifts between a padlock and trident, surface animation created by picosecond lasers (working at submicron scale, producing indents 200 times narrower than a human hair), micro-text reading DECUS ET TUTAMEN ("an ornament and a safeguard"), and tincture lines on Britannia's shield using centuries-old heraldic techniques reintroduced with modern precision. These make the Britannia what The Royal Mint calls "the world's most visually secure bullion coin."

At 65 mm diameter compared to the 1 oz coin's 32.69 mm, the 5 oz Britannia has roughly four times the surface area, allowing the annual reverse design to be appreciated in considerably more detail. The larger format is particularly striking for the more intricate designs such as the 2023 chariot with sea creatures (Jonathan Olliffe) or the 2024 profile with helmet, lion, and wave (Marie-Alice Harel).

Britannia 5 oz Gold Specifications

Britannia Denomination Range

Security Features (2021 onwards)

• Latent image: A circular area on the reverse that changes from a padlock to a trident depending on viewing angle, similar in principle to holographic technology
• Surface animation: A wave-like pattern behind Britannia that appears to move as the coin is tilted, created using picosecond lasers at submicron scale
• Micro-text: The Latin inscription DECUS ET TUTAMEN ("an ornament and a safeguard") encircles Britannia, requiring magnification to read clearly
• Tincture lines: A heraldic pattern on Britannia's shield that depicts colours through line patterns on metal, reviving a centuries-old artistic technique with modern precision

All four features are visible to the naked eye by rotating the coin in light, though some require close inspection. They apply to all Britannia denominations from 2021 onwards. The 5 oz format displays these features with greater visual impact due to the larger surface area, particularly the surface animation effect across the expanded wave pattern behind Britannia.

5 oz Britannia Tax Treatment by Country

UK

CGT-exempt. The 5 oz gold Britannia is UK legal tender with a GBP 500 face value. All sterling-denominated legal tender coins are exempt from Capital Gains Tax, regardless of the denomination size. This means a single 5 oz Britannia can appreciate by thousands of pounds with no CGT liability, making it particularly attractive for large holdings where the GBP 3,000 annual CGT allowance would be quickly exhausted by bars or non-UK coins. Gold is also VAT-exempt as investment gold. SIPP eligibility applies: gold bullion can be held in a Self-Invested Personal Pension, providing income tax relief at the individual's marginal rate (up to 45%) and additional CGT exemption within the pension wrapper.

United States

IRA-eligible. The .9999 purity exceeds the IRS 99.5% threshold for gold in self-directed IRAs under Section 408(m). Pre-2013 Britannias at .917 purity do not meet this requirement, but the 5 oz denomination has only been produced in the .9999 era. Must be held by an approved custodian. Long-term gains are taxed at the collectibles rate of 28% maximum, higher than the standard 15-20% capital gains rate on equities. Sales tax varies by state, with roughly 35 states exempting bullion.

EU

VAT-exempt as investment gold under the EU gold directive. The post-Brexit Britannia still meets the directive's objective criteria (legal tender, post-1800, .900+ purity, priced within 80% of gold content). Germany offers an additional advantage: capital gains on gold held for more than one year are entirely tax-free, regardless of the amount.

Australia

GST-free as investment-grade gold at .9999 purity. Capital gains tax applies on disposal with a 50% discount for individuals holding more than 12 months.

Canada

GST/HST-exempt as qualifying foreign legal tender gold. The Britannia is eligible for RRSP and TFSA through approved dealers holding allocated storage.

Singapore and Hong Kong

Singapore: GST-exempt as Investment Precious Metals (IPM), with no capital gains tax. Hong Kong: no sales tax, import duty, or capital gains tax, making it one of the most tax-efficient jurisdictions for holding gold globally.

5 oz Britannia vs 5 oz Alternatives and Equivalent-Weight Bars

The 5 oz gold coin market is thinly populated among sovereign mints. There is no 5 oz American Gold Eagle, 5 oz Gold Maple Leaf, or 5 oz Gold Krugerrand. The Perth Mint produces 2 oz and 10 oz gold Kangaroos but not a standard 5 oz. This gives the 5 oz Britannia limited direct coin competition at its weight class, though 5 oz gold bars from PAMP Suisse, Valcambi, and other LBMA-accredited refiners are available as alternative formats.

Against a 5 oz gold bar, the Britannia coin offers two structural advantages for UK buyers. First, CGT exemption: gains on the coin are untaxed, whereas gains on a bar are subject to CGT at 18% or 24% above the annual allowance. Second, the four visual security features provide authentication confidence that bars, which rely on serial numbers and assay cards, do not match at point of inspection. The bar's advantage is cost: 5 oz gold bars typically carry lower premiums than coins due to simpler manufacturing.

Compared to five individual 1 oz gold Britannias, the 5 oz coin contains the same total gold and carries the same CGT exemption. The 1 oz coins offer divisibility (selling one ounce at a time) and wider secondary market demand at the standard trading unit. The 5 oz coin is a single, more impressive piece that may appeal to collectors and requires fewer transactions for the same holding. Per-ounce premiums are broadly similar between the two formats.

For buyers outside the UK, where the CGT exemption does not apply, the 5 oz Britannia competes on security features and Royal Mint reputation against PAMP Suisse and Valcambi bars. The coin format commands a higher premium, justified by the sovereign mint guarantee and anti-counterfeiting technology, but the gold content per dollar is lower than a comparable bar.