Gold Bars vs Gold Coins: Which is the Better Investment?

It is one of the most common questions we hear from investors visiting Bullion Outlet: should I buy gold bars or gold coins?

Both are excellent ways to own physical gold. Both are tangible, portable stores of wealth that hold their value over time. But they differ in important ways — their premiums, their tax treatment, their liquidity, and their practical advantages can all influence which is the right choice for you.

This guide gives you a thorough, honest comparison so you can make a confident decision.

The Basics: What Are Gold Bars and Gold Coins?

Gold Bars

Gold bars — sometimes called gold ingots or bullion bars — are rectangular blocks of refined gold. They range in weight from 1 gram up to 1 kilogram (and larger for institutional buyers). UK investors most commonly buy bars between 1g and 100g.

Most investment-grade gold bars are 999.9 fine (99.99% pure gold) and produced by internationally accredited refineries such as PAMP Suisse, Heraeus, Valcambi, or the Royal Mint. They are typically stamped with the refinery logo, weight, purity, and a unique serial number.

There are two production styles:

• Cast bars: Poured from molten gold into a mould. Slightly rougher in appearance. Lower production cost, so often a marginally lower premium.
• Minted bars: Cut and pressed from gold sheet with precision machinery. Cleaner, more uniform finish. Often sealed in an assay card for tamper-evidence and authentication.

Gold Coins

Investment gold coins are struck by official government mints and designed primarily for their gold content rather than collector value. The most popular UK investment gold coins are:

• Gold Sovereign — minted by the Royal Mint since 1817. Contains 7.322g of 22-carat (91.67%) fine gold. Available in full, half, quarter, and double Sovereign denominations.
• Britannia Gold Coin — minted by the Royal Mint. 1oz (31.1g) of 999.9 fine gold. Also available in fractional sizes.
• Gold Krugerrand — minted in South Africa. 1oz of 22-carat gold. One of the world’s most traded gold coins.
• Canadian Gold Maple Leaf — 1oz of 999.9 fine gold, minted by the Royal Canadian Mint. Features advanced security.
• American Gold Eagle — 1oz of 22-carat gold, minted by the US Mint.

For UK investors, Sovereigns and Britannias carry particular advantages, as we will explain shortly.

1. Premium Over Spot Price

The premium is the amount you pay above the raw spot price of gold. It covers the dealer’s cost of sourcing, minting or refining, handling, and profit margin. Understanding premiums is crucial — it is the main way buyers lose value without realising it.

Gold Bars: Lower Premiums

Gold bars generally carry lower premiums than coins, especially at larger sizes. A 100g gold bar, for example, will typically carry a premium of around 1–3% over the live gold price. A 1kg bar can be even closer to spot.

The trade-off is that larger bars require a larger upfront investment. Smaller bars (1g, 5g) carry higher premiums per gram because the fixed production cost is spread over less gold.

Gold Coins: Higher Premiums

Gold coins carry higher premiums than bars of comparable weight, typically in the range of 3–8% over spot for popular bullion coins. This reflects the additional cost of minting, legal tender status, and often higher demand.

Collector or numismatic coins (limited editions, proof coins) can carry premiums of 20%, 50%, or more above spot. These are generally not recommended for pure investment purposes unless you have specialist knowledge.

Verdict for premiums: Gold bars win, especially for larger holdings where keeping premiums low maximises the amount of gold you receive for your money.

2. Capital Gains Tax (CGT)

This is arguably the most important practical difference between gold bars and gold coins for UK investors.

UK Legal Tender Coins Are CGT-Exempt

Gold Sovereigns and Britannia gold coins are legal tender in the United Kingdom, denominated in sterling. Under UK tax law (TCGA 1992, s.21(1)(b)), UK currency — including sterling-denominated legal tender coins — is exempt from Capital Gains Tax.

This means that any profit you make from selling Gold Sovereigns or Britannia coins is completely free from CGT, regardless of the size of the gain.

For a gold bar, or for non-UK coins such as Krugerrands or Maple Leafs, CGT applies to gains above the annual exempt amount (£3,000 per individual for 2026/27). If your total gains across all assets are below this threshold, you will owe nothing. But for investors making larger gains, the tax bill can be significant.

Example: You buy £20,000 of gold. Five years later it is worth £32,000 — a gain of £12,000.

• In Gold Sovereigns: £0 CGT
• In gold bars: Gain of £12,000, minus £3,000 exemption = £9,000 taxable. At 18% basic rate CGT: £1,620 tax owed

Over a larger investment or longer time horizon, the difference is even more pronounced.

Verdict for CGT: UK legal tender gold coins (Sovereigns, Britannias) win clearly, particularly for long-term investors or those with larger holdings.

3. VAT Treatment

Both investment-grade gold bars and qualifying gold coins are exempt from UK VAT, provided they meet the purity thresholds set by HMRC:

• Gold bars: minimum 995 fine (99.5% pure) — most modern bars at 999.9 fine qualify easily
• Gold coins: minimum 900 fine (90% pure), minted after 1800, traded at no more than 180% of gold content value

Sovereigns and Britannias both qualify. Most internationally traded bullion coins (Krugerrands, Maple Leafs, Eagles) also qualify.

Neither gold bars nor gold coins attract VAT when they meet these criteria — so there is no meaningful difference between them on this point.

For a detailed breakdown, see our guide: Is Investment Gold VAT Exempt in the UK?

4. Liquidity: How Easy Is It to Sell?

Liquidity matters because when the time comes to sell, you want to be able to do so quickly and at a fair price.

Gold Coins: Generally More Liquid

Recognisable bullion coins — particularly Gold Sovereigns and Britannias — are among the most traded gold products in the world. Virtually every reputable bullion dealer in the UK will buy them. Their standardised weights and well-known designs make authentication straightforward and buyer confidence high.

Sovereigns are particularly liquid at the retail level because their smaller size (around £500–£900 each depending on gold price) makes them accessible to a wide range of buyers.

Gold Bars: Very Liquid at Larger Sizes, Slightly Less So at Small

Larger gold bars from recognised refineries (PAMP, Heraeus, Valcambi, Royal Mint) are extremely liquid with institutional buyers, dealers, and banks. However, very small bars (1g, 2.5g) can sometimes carry wider buy-sell spreads because their authentication is slightly more involved and the buyer pool is narrower.

Sealed, assay-carded bars from recognised refineries sell back easily. Bars with damaged packaging, missing assay cards, or from less-recognised sources may attract lower offers.

Verdict for liquidity: Gold coins edge ahead for most individual investors, particularly at the £500–£5,000 holding level. Both are highly liquid when purchased from trusted, recognisable sources.

5. Storage and Divisibility

Divisibility

Coins offer natural divisibility. You can sell a single Sovereign without liquidating your entire gold holding — useful if you need to raise a specific sum without selling everything.

A 100g or 1kg gold bar is all-or-nothing. If you need £5,000 and your bar is worth £11,000, you cannot sell half of it.

Building a portfolio of coins of different sizes gives you more flexibility to manage cash flow without being forced to sell more than you need to.

Storage

Both bars and coins are compact and easy to store. Coins tend to be slightly thinner and can be stored in tubes or purpose-made trays. Bars, especially at larger weights, are denser and may require more secure storage.

There is no meaningful difference in storage requirements between the two for most investors.

Verdict for divisibility: Coins win. The ability to sell individual coins of varying denominations gives you much greater flexibility.

6. Numismatic and Collector Value

Standard investment bullion coins have a small numismatic premium over bars, but this can also work in your favour. Well-preserved coins from certain years, or limited-edition Sovereigns and Britannias, can attract collector premiums on top of their gold value when reselling.

Gold bars have essentially zero numismatic value — they are worth their weight in gold, full stop.

This is a minor factor for most investment buyers, but worth noting.

Side-by-Side Comparison