Gold Bars vs Gold Coins: Which Should UK Investors Buy?

When buying physical gold in the UK, the choice between gold bars and gold coins is not simply a matter of preference. The two formats differ materially on tax treatment, premium structure, divisibility and ease of resale. The right answer depends on your investment size, time horizon and tax position.

Tax: The Most Important Difference for UK Buyers

For UK residents, the Capital Gains Tax treatment is the primary factor separating bars from coins, and it is not a marginal difference.

Gold Sovereigns and Gold Britannias, along with other Royal Mint legal tender coins, are fully exempt from CGT under s.21(1)(b) of the Taxation of Chargeable Gains Act 1992. The exemption is unlimited: regardless of the profit you make when you sell, no CGT is due. For a full account of which coins qualify and why, see our guide to CGT-free gold in the UK.

Gold bars carry no such exemption. Profit on a bar sale counts toward your annual CGT exempt amount (£3,000 for 2025/26). Gains above that threshold are taxed at 18% for basic-rate taxpayers or 24% for higher-rate taxpayers. On a 1oz gold bar purchased three or four years ago, the gain at current prices can comfortably exceed the annual exempt amount, particularly if you have other taxable disposals in the same year. That is a real tax cost that directly erodes your net return.

VAT treatment is identical for both formats: investment gold bars and qualifying coins are VAT-exempt at the point of purchase in the UK, as set out in HMRC VAT Notice 701/21.

Premium Over Spot: Where Bars Have the Advantage

The premium is the mark-up over the live gold spot price that you pay when buying. It reflects minting and fabrication costs, dealer margin and demand dynamics in the secondary market.

Gold bars generally carry lower premiums than coins, particularly at larger sizes. A 1oz cast bar will typically cost less than a 1oz Britannia because the minting specification is simpler and numismatic interest plays no role. At 100g or 1kg sizes, the premium per gram of gold drops further, which is a meaningful saving for buyers committing larger sums.

Coins carry a higher premium because they require precise minting to exacting specifications, are produced in annual limited runs and carry collector interest alongside their bullion value. A Gold Sovereign's premium also reflects its numismatic history and the depth of demand from collectors, not just investors.

The premium gap matters at entry, but also at exit. Royal Mint coins with deep secondary market demand, such as Sovereigns and Britannias, achieve strong resale prices. The premium paid on purchase is not necessarily lost when the time comes to sell.

Divisibility: The Structural Case for Coins

Gold bars are available from 1g up to the 400oz Good Delivery bar used in wholesale markets. For retail investors, the most practical sizes are 1oz, 100g and 1kg. The problem with larger bars is indivisibility: you cannot sell a fraction of a 1kg bar. When you want to realise part of your holding, you must sell the whole unit or hold it in full.

Coins solve this structurally. A Gold Sovereign contains 0.2354oz of pure gold, making it one of the most accessible CGT-free entry points available. A half-Sovereign contains half that. An investor holding twenty Sovereigns can sell two in one tax year, three in the next and so on, managing both the size of disposals and any taxable gains with precision.

This divisibility is not just convenient. It is a genuine portfolio management tool, especially at current gold prices where a single 1oz coin represents a meaningful sum.

Liquidity and Resale

Both formats are liquid in normal market conditions, and any reputable UK dealer will buy back standard gold bars and Royal Mint coins. However, the resale process differs in ways that matter at scale.

Gold bars must be identifiable and verifiable. Bars from LBMA-approved refiners such as PAMP, Valcambi or Umicore command the best resale prices because their hallmarks are internationally recognised. An obscure or unbranded bar may attract a discount or require assay testing before a dealer will purchase it.

Royal Mint coins are standardised, universally recognised and require no authentication beyond visual inspection. The Sovereign in particular has one of the deepest secondary markets of any bullion product in the UK, with demand from dealers, private buyers and collectors alike. If you are planning to sell to a dealer such as Fitzroy Bullion, Royal Mint coins are consistently the most straightforward products to price and transact quickly.

Storage Efficiency

Bars are more space-efficient than coins. A 1kg bar holds the equivalent of roughly 43 Gold Sovereigns in a fraction of the physical volume. For investors using a professional vault, this translates to lower storage cost per gram of gold held. For home storage, it means fewer items to manage and insure individually.

The counterpoint is concentration of value. A single 1kg bar represents a larger undivided unit, which is a consideration for both insurance and for the logistics of a partial sale.

Which Format Is Right for You?

For most UK retail investors buying outside of a tax-sheltered account, coins are the stronger default. The CGT exemption on Royal Mint legal tender coins removes a liability that compounds significantly over a multi-year hold, divisibility allows precise management of disposals, and the secondary market is the deepest of any UK bullion format.

Bars make more sense in specific circumstances: when buying at scale where the premium saving on a 1kg bar outweighs the CGT exposure, when investing through a SIPP or other structure where CGT does not apply at the point of disposal, or when buying gold for collateral or storage purposes where coin form is irrelevant.

Many experienced investors hold both: CGT-free coins as the core of a long-term holding, supplemented by larger bars for cost efficiency, with bar disposals planned against the annual £3,000 exempt amount across tax years.

This article is for educational purposes only and does not constitute financial or tax advice. Tax rules can change. Always seek guidance from a qualified adviser before making investment decisions.

Browse gold coins and gold bars at Fitzroy Bullion. Each product page shows the live price and premium over spot.