1/20 oz Australian Nugget Gold Coin

Perth Mint's Original Gold Bullion Coin at Micro-Fractional Size

The 1/20 oz Australian Nugget is the smallest denomination in Perth Mint's flagship gold bullion programme, containing 1.555 grams of 999.9 fine gold with a face value of A$5. The series was introduced in 1986 by Gold Corporation (trading as The Perth Mint), wholly owned by the Government of Western Australia, making it one of the first government mints to offer 999.9 fine gold bullion coins as a standard product.

The "Nugget" name refers to the original 1986-1989 reverse designs, which depicted famous Australian gold nuggets: the Welcome Stranger (the largest alluvial gold nugget ever found, at 72 kg gross weight), the Hand of Faith (discovered just 30 cm below the surface by a metal detectorist in 1980 and now displayed at the Golden Nugget Casino in Las Vegas), the Golden Eagle, and the Little Hero. From 1990, the reverse switched to kangaroo imagery following market research that indicated the kangaroo was more internationally recognisable, and the series became informally known as the "Australian Kangaroo."

At 1/20 oz, this is an ultra-fractional coin with predictably high premiums. The fixed costs of minting, quality control, and individual packaging (Perth Mint pioneered hard plastic encapsulation for bullion coins at this series' launch) are distributed across just 1.555 grams of gold. At current gold prices, the melt value sits around $165 USD, with retail prices running 15-25% higher. The coin's appeal is less about cost-efficient accumulation and more about entry-level gold ownership, gifting, and building a complete denomination set within the Nugget/Kangaroo programme.

1/20 oz Australian Nugget Gold Coin Specifications

Nugget/Kangaroo Full Denomination Range

The obverse has carried four different Queen Elizabeth II portraits across the series' history: Raphael Maklouf (1986-1998), Ian Rank-Broadley (1999-2018), Jody Clark (2019-2022), and back to Rank-Broadley for certain editions. King Charles III has appeared from 2023 onward. The edge is reeded on all denominations.

The 1986-1989 nugget-era coins featured a distinctive "two-tone" frosted design effect, achieved by selective frosting of the gold nugget image against a mirror-like background. This proof-like technique applied to standard bullion coins was innovative for the era. Individual hard plastic encapsulation was standard from the 1986 launch, protecting coins from contact marks and preserving brilliant uncirculated condition. This was unusual at a time when most bullion coins were sold loose or in simple flips.

Face values on the larger denominations were reduced in 1992 (the 2 oz dropped from A$500 to A$200, and the 10 oz from A$2,500 to A$1,000) to address practical accounting and legal concerns. The 1/20 oz face value of A$5 has remained unchanged since the series' introduction. Annual design changes on the smaller denominations (from the kangaroo era onward) make each vintage identifiable, while the larger 2 oz, 10 oz, and 1 kg sizes use a consistent "big red kangaroo" design.

Australian Nugget Tax Treatment

The Nugget's Australian legal tender status and 999.9 purity create favourable tax treatment across most major bullion markets.

Australia

• GST: Exempt. As investment-grade gold at 99.5%+ purity in coin form from a government mint, the Nugget/Kangaroo qualifies for the investment precious metals GST exemption.
• CGT: Gains on bullion held as an investment are subject to CGT. A 50% discount applies if held for more than 12 months.

United States

• IRA: Eligible. The 999.9 purity exceeds the IRS Section 408(m) threshold of 99.5% for gold. Legal tender status from an approved sovereign mint satisfies custodian requirements. Must be held by an approved custodian.
• Capital gains: Taxed as collectibles at a maximum 28% federal rate.
• Sales tax: State-dependent. Most states with bullion exemptions cover government-minted gold coins.

United Kingdom

• VAT: 0%. Exempt as investment gold.
• CGT: Not exempt. The Nugget is not UK legal tender. Gains are subject to CGT at the investor's marginal rate (18% basic, 24% higher).

Canada

• GST/HST: Exempt. Gold coins at 99.5%+ purity from recognised sovereign mints qualify for the federal precious metals exemption.

European Union

• VAT: Exempt as investment gold under EU Directive 98/80/EC.

Singapore

• GST: Exempt under the Investment Precious Metals (IPM) scheme. Gold at 99.5%+ purity in coin form from an approved mint qualifies.

1/20 oz Australian Nugget vs Other Ultra-Fractional Gold

The 1/20 oz gold coin market is limited to a small number of sovereign mint products. The 1/20 oz Canadian Maple Leaf is the most widely available competitor, sharing 999.9 purity, government legal tender status, and the same basic appeal as an ultra-low entry point into gold ownership. The Maple Leaf benefits from the RCM's radial line and micro-engraved privy mark security features and a broader dealer network in North America. The Nugget/Kangaroo offers annually changing designs (from the kangaroo era onward) and the Perth Mint's established reputation in Asian gold markets.

The 1986-1989 nugget-design coins at 1/20 oz occupy a unique niche. They are genuine bullion coins with full gold weight and legal tender status, but their limited production years and distinctive imagery (named Australian gold nuggets rather than kangaroos) create numismatic interest. If you encounter a 1/20 oz with a nugget reverse rather than a kangaroo, it is worth checking the secondary market premium, which may exceed standard bullion pricing.

For buyers considering whether the 1/20 oz denomination is the right choice, the key comparison is up the weight scale. Moving to the 1/10 oz Australian Kangaroo doubles the gold content while substantially reducing the percentage premium. At 1/20 oz, premiums of 15-25% over spot are typical. At 1/10 oz, they drop to 10-18%. The absolute savings are modest at these small sizes, but the pattern holds: every step up the denomination ladder improves the cost efficiency of gold acquisition.

The Mexican Libertad 1/20 oz is the other notable product at this weight, produced in notably lower mintages that give it collector appeal. At 999 fine (three nines versus the Nugget's four), the Libertad has no face value and carries no legal tender status, which affects tax treatment and IRA eligibility.