How to Buy Investment Gold: Bars vs Coins

Three decisions, in order: format, premium, custody

Buying physical gold is simpler than the jargon suggests. Almost everything reduces to three decisions taken in sequence — what format to buy, what premium you are willing to pay for it, and where it will physically live afterwards. Get those three right and the rest is administration.

What this guide does not do is tell you what gold is worth today. The spot price moves continuously and any figure printed in an article is wrong within a day, so the useful skill is reading a live quote correctly rather than memorising a number. That is what the premium section below is for.

Bars versus coins: divisibility is the real trade-off

Bars carry the lowest premium over spot, and the larger the bar the smaller the premium per gram, because the fixed cost of producing one unit is spread across more metal. If you want maximum gold for your money and expect to hold, bars win on arithmetic.

Coins cost more per gram and buy you something bars cannot: divisibility. A holding in one-ounce coins can be sold in parts as you need it. A single large bar is an all-or-nothing sale. Sovereign coins are also more widely recognised by dealers, and in some jurisdictions carry tax treatment bars do not — the Sovereign versus Krugerrand comparison works through two of the most common.

For a first purchase, recognised bullion coins are usually the more flexible choice. For a larger position built over time, most buyers end up holding both: bars as the efficient core, coins as the layer they can actually sell in pieces.

How to read a premium without being caught out

You never pay just the spot price. Dealers add a premium covering refining, minting, distribution and margin, and that premium is where the real price differences between sellers live.

The habit worth building is simple: convert every quote to a price per gram of pure gold, then compare. That single conversion neutralises differences in unit size, fineness and currency, and it is the only genuinely comparable number. A one-ounce coin and a 100 g bar are not otherwise comparable at a glance.

Be careful with published premium ranges, including any you read elsewhere. Premiums move with product, dealer, mint capacity and retail demand, and a percentage that was accurate when an article was written can be badly wrong months later. Check the live all-in price on the day you transact. Note too that the premium is not purely a cost — recognised, liquid products command a premium partly because they are easy to sell again, and the cheapest premium on an obscure product is often a false economy at resale.

Fineness: 995 is the line that carries legal weight

For jewellery, purity is mostly a durability decision. For bullion it is a definitional one, and the threshold is 995 rather than 999.

Under Article 344 of Council Directive 2006/112/EC, investment gold means gold in the form of a bar or wafer of a weight accepted by the bullion markets and of a purity equal to or greater than 995 thousandths; gold coins qualify at a purity of at least 900 thousandths where they were minted after 1800, are or have been legal tender in their country of origin, and normally sell at no more than 80% above the open market value of the gold they contain. That definition is what the EU's VAT exemption for investment gold hangs on.

The wholesale market draws the line in the same place. The LBMA's Good Delivery technical specification sets a minimum acceptable fineness of 995.0 parts per thousand fine gold for a large gold bar, with a gold content between 350 and 430 fine troy ounces — roughly 10.9 to 13.4 kilograms — and requires the refiner's stamp, an assay mark, the fineness to four significant figures, a serial number and the month and year of manufacture.

You will not be buying a 12 kg Good Delivery bar. The reason it matters is that the retail products you can buy are made by the same refiners to the same conventions, and a product that would not clear 995 is outside the category that the tax rules and the wholesale market recognise. If you want the full purity picture, 18K gold versus 999 gold covers how the karat and fineness scales map onto each other.

Buy recognised products, from sellers who show their working

Recognition is liquidity. Products from sovereign mints and accredited refiners resell faster and closer to spot because a dealer can identify them on sight and does not need to price in doubt. Obscure brands save a little at purchase and cost more at sale, which is the wrong way round for an asset you are buying specifically to be able to sell.

What to look for in a seller: live pricing you can compare against spot before committing, a published buyback position, clear product specifications including fineness and weight, and documentation that comes with the item rather than on request. A dealer such as Silver Gold Bull publishes live pricing, which is what lets you see the premium rather than infer it.

Treat a price materially below the metal value as the warning it is. In gold there is no such thing as a bargain on the metal itself — only a difference in premium, and a difference large enough to look like a bargain is usually a difference in what you are actually being sold. If you are buying jewellery rather than bullion, the checks for spotting fake gold apply directly.

Storage and paperwork: decide before you buy, not after

Custody is the decision people postpone and then regret. The realistic options are a home safe, a bank safe deposit box, or allocated vault storage through a dealer, and each trades cost against security and against how quickly you can get to the metal. Gold storage options compares them properly.

Whatever you choose, keep the paperwork. Invoices, assay certificates and serial numbers are what establish provenance, and provenance is what makes a sale straightforward rather than an argument. Storing the documentation separately from the metal is sensible for the obvious reason.

One closing note on expectations. Gold produces no income — no dividend, no interest, no rent — and its only return is price change. It can sit flat for years and it can fall. Prices move daily and sometimes sharply. Gold as an investment sets out what the metal does and does not do in a portfolio. This is general information and not financial advice; size any holding to the job you want it to do and to your own circumstances.

Sources

• lbma.org.uk/publications/good-delivery-rules/technical-specifications
• legislation.gov.uk/eudr/2006/112/title/XII/chapter/5
• legislation.gov.uk/ukpga/1973/43/schedule/2

Frequently Asked Questions