Gold Bullion Investing: Bars, Coins, Rounds, and Premiums

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TL;DR: Gold bullion investing means buying physical metal in one of three forms, government-minted coins, refiner-produced bars, or privately minted rounds, each priced at spot plus a premium that varies by product type and size. Bars from major refiners typically carry the lowest premiums, sovereign coins cost more but move fastest at resale, and the accreditation standard set by the London Bullion Market Association is what separates a bar a dealer will buy back from one that may need an assay first. This page covers what bullion is, how premiums and liquidity work, and how to buy it. For the direct verdict on bars versus coins, see the comparison at gold bars versus gold coins. For an overview of every route into gold as an asset class, start at investingingold.com.

What Counts as Investment-Grade Gold Bullion

Investment-grade gold bullion comes in three distinct forms, coins, bars, and rounds, and the distinction matters because it determines legal-tender status, brand recognition, and how easily a buyer can resell the piece later.

A government mint strikes coins as legal tender, though the price paid tracks the metal weight rather than the face value stamped on the piece. The U.S. Mint issues its American Eagle Gold Bullion Coin across four weights, one ounce down to one-tenth ounce, and its American Buffalo release marked the Mint’s first coin struck in 24 karat, .9999 fine gold. Bars carry no face value at all and are refiner-produced ingots, sized anywhere from a fractional-ounce wafer to a large wholesale block, with the refiner’s name doing all the work of establishing credibility. A private mint strikes rounds, and because no government issues them, a round carries no legal-tender status or face value despite resembling a coin. A round still counts as investment-grade if an accredited refiner or mint made it and it meets the fineness the market expects, the same test a bar has to clear.

The U.S. Mint does not sell bullion coins directly to the public. It distributes through a network of Authorized Purchasers, which the Mint describes as creating “a two-way market buying and selling to wholesalers, financial institutions, and other secondary retailers.” Retail buyers purchase from that downstream network of dealers rather than from the Mint itself, which is one reason retail premiums run higher than the Mint’s own wholesale pricing.

The LBMA Good Delivery Standard and Refiner Accreditation

A bar or round only qualifies as investment-grade bullion when it comes from a refiner accredited to a recognized standard, and the benchmark for that standard is the London Bullion Market Association‘s Good Delivery List.

The full Good Delivery specification describes a large wholesale bar weighing between 350 and 430 fine troy ounces, at a minimum fineness of 995.0 parts per thousand, bearing the refiner’s hallmark, assayed fineness, year, and a unique serial number. That full-size bar is the wholesale unit that trades in the London market, not what a retail buyer typically holds. Retail-sized bars, from one-ounce wafers to kilo bars, are not Good Delivery bars in themselves, but the ones worth buying come from the same LBMA-accredited refiners and are marked with the same kind of hallmark, fineness stamp, and serial number that trace back to that accreditation.

Oversight of that refiner list has moved over time, from the Bank of England originally to the LBMA’s Physical Committee today, and staying on it requires a refiner to pass periodic audits. The reach of that accreditation extends well past London. COMEX, the exchange where gold futures trade, will only accept delivery of bars carrying “a brand approved by the Exchange,” and since 2020 COMEX has matched its own approved-brand roster to the LBMA’s. A refiner’s spot on that accredited list is effectively a passport, letting its bars change hands at a retail counter, clear in the wholesale London market, and satisfy a futures delivery, all without a fresh assay at each stop.

How Premiums Over Spot Work

A gold bullion premium is the amount a buyer pays above the spot price of gold to cover minting, distribution, and dealer margin, and it varies by product type far more than most first-time buyers expect.

Generic gold bars from major refiners carry the lowest premiums, with JM Bullion putting the average premium on generic gold bullion bars at roughly 1 to 2 percent over spot. Sovereign coins and one-ounce bars from name-brand refiners run higher, with APMEX publishing a typical range of roughly 3 to 8 percent over spot for common one-ounce gold coins and bars. Fractional coins carry a higher percentage premium than full-ounce coins because minting cost is spread across less metal. The Mint’s own wholesale pricing to Authorized Purchasers, who must order at least 1,000 ounces at a time, confirms the same pattern at the source: gold Eagle premiums start at 3 percent over the LBMA PM Gold Price for full-ounce coins and roughly triple by the time they reach the smallest, tenth-ounce size. Retail buyers pay more than even that wholesale ceiling.

Two refiners, PAMP Suisse and Rand Refinery, supply the 1-ounce, .9999 fine bars sold at Costco, which offer a concrete, publicly documented example of a low-premium retail bar. Costco has priced them at roughly 2 percent over spot, though the bars are non-refundable and subject to strict per-member purchase limits, and Costco does not buy the metal back. The detailed review of Costco’s gold bars covers the resale math in full.

Premium is only half the cost of a round trip. Reputable dealers buy bullion back below spot to cover their own authentication and resale costs, and that buy-sell gap is generally a few percentage points wide for gold, narrower than the wider spread typical of silver. For a clean illustration only, not a market quote: at a hypothetical spot price of 2,000 dollars per troy ounce, a 5 percent purchase premium adds 100 dollars per ounce on the way in, and a dealer’s buyback spread subtracts further value on the way out. A buyer who expects to sell within a short holding period should weigh both sides of that spread, not just the premium paid at purchase.

Liquidity: What Sells Easily and What Doesn’t

Liquidity in bullion tracks recognizability more than anything else, and a coin whose weight and fineness a government guarantees will clear a sale faster than a bar or round a dealer has never handled before.

Widely known government-minted coins, the American Gold Eagle, the Canadian Gold Maple Leaf, and the Austrian Philharmonic among them, trade the most smoothly because their design, weight, and fineness are effectively guaranteed by the issuing government. Small bars from major LBMA-accredited refiners trade nearly as easily, since dealers recognize the refiner’s hallmark on sight. Larger bars, ten ounces and up, or bars from less familiar refiners, may require an assay before a dealer will buy them back, which can slow a sale or reduce the offer. Rounds from private mints are generally the least liquid of the three, even when they meet the same fineness standard as an accredited bar, because they carry no government backing and less brand recognition.

How to Buy Gold Bullion From a Reputable Dealer

Buying gold bullion safely means confirming the refiner or mint behind the product, understanding the premium and buyback spread before paying, and choosing a dealer willing to disclose both.

Start by identifying the mint or refiner. A coin from the U.S. Mint or a bar from an LBMA-accredited refiner carries a traceable standard behind it, while an unfamiliar name from an unlisted refiner does not. Ask what the all-in price includes and compare it to the product’s published premium range rather than to the spot price alone, since spot price alone tells a buyer nothing about what a dealer is actually charging. Ask, too, what the dealer will pay to buy the same item back, since that buyback quote is the other half of the true cost of ownership. A price that sits noticeably below the market for the same product from other established dealers is a signal to slow down and verify authenticity rather than a bargain. For a head-to-head look at how bars and coins compare on cost, liquidity, and storage, see gold bars versus gold coins.

Gold Bullion Inside a Retirement Account

Some gold bullion, but not all of it, meets the fineness standard required to sit inside a self-directed individual retirement account, and that standard is set by reference to the futures market’s own deliverable-quality bar, not by a dealer’s marketing claim.

Bars and rounds held in an IRA must meet the COMEX and NYMEX deliverable fineness standard, which for gold aligns with the LBMA Good Delivery minimum of 995.0 parts per thousand, and must come from an accredited refiner, assayer, or manufacturer, or from a national government mint. A privately minted round is eligible on the same terms as a bar, provided it clears that fineness bar and the accreditation test, since a round’s lack of legal-tender status does not by itself disqualify it. This is a narrower slice of the overall bullion market than what a retail buyer can purchase outside a retirement account, and it says nothing about custody, which is governed separately by the Internal Revenue Code. For the full mechanics of how a self-directed IRA holds bullion, including custodian and depository requirements, see the gold IRA overview.

Frequently Asked Questions

What is the difference between gold coins, bars, and rounds? A government mint strikes coins as legal tender priced for metal content rather than face value, such as the American Gold Eagle. A refiner produces bars as ingots carrying no face value. A private mint strikes rounds, which look similar to a coin but carry no legal-tender status. All three can be investment-grade if an accredited mint or refiner made them and they meet the expected fineness.

What does LBMA Good Delivery mean? Good Delivery is the refiner accreditation the London Bullion Market Association’s Physical Committee oversees today, a role that sat with the Bank of England when the list began, and passing it is what qualifies a refiner’s large wholesale bars for the London market. Smaller, retail-sized bars from an accredited refiner carry that same hallmark and fineness even though they fall short of Good Delivery size themselves.

How much premium should I expect to pay over spot for gold bullion? Generic bars from major refiners run roughly 1 to 2 percent over spot. Common one-ounce coins and bars typically run roughly 3 to 8 percent over spot. Fractional coins carry a higher percentage premium than full-ounce coins because minting cost spreads across less metal.

Are gold rounds a good investment? Rounds can meet the same fineness and accreditation standard as bars, but they carry less brand recognition than sovereign coins and are generally the least liquid of the three bullion forms. They can still be a reasonable, lower-premium way to accumulate metal from a reputable, accredited source.

Is gold bullion eligible for a retirement account? Only bullion that meets the COMEX and NYMEX deliverable fineness standard and comes from an accredited refiner or government mint qualifies inside a self-directed IRA, and it must be held by an approved custodian rather than at home. See the gold IRA overview linked above for the full custody rules.

This article is for educational purposes only and does not constitute investment, tax, or legal advice. Always weigh these mechanics against your own plan, and consult your own financial and tax professionals before buying gold bullion.