Yes, it is completely legal to own a 400-ounce gold bar in the United States. There are no federal laws prohibiting private citizens from owning gold in any quantity or form. You can buy and hold gold bars of any size, including the large 400-ounce bars that are commonly traded in the institutional market.
A 400-ounce gold bar, also known as a London Good Delivery bar, is the standard size used by central banks, bullion banks, and major institutional traders. At current gold prices, a single 400-ounce bar represents a significant financial commitment, often several hundred thousand dollars or more. These bars weigh approximately 27.4 pounds and are produced by refiners accredited by the London Bullion Market Association.
When it comes to holding a 400-ounce bar inside an IRA, the bar must meet IRS purity requirements. Gold bars in an IRA must be at least 99.5 percent pure and produced by an accredited refiner. Most 400-ounce Good Delivery bars meet these standards, but you should verify with your custodian that the specific bar qualifies before purchasing.
The practical challenges of a 400-ounce bar are worth considering. The high dollar value means a single bar could represent your entire precious metals allocation, which creates concentration risk. You cannot sell a fraction of a bar, so if you need to liquidate a portion of your gold holdings, having smaller bars or coins gives you more flexibility.
Storage fees at an approved depository may also differ for a bar of this size compared to smaller products, depending on how the depository structures its pricing.
For most individual investors, smaller gold products like one-ounce coins, 10-ounce bars, or even kilo bars offer better flexibility for buying, selling, and managing their allocation over time. A 400-ounce bar is legal and can be held in an IRA, but it is typically more practical for institutional investors or ultra-high-net-worth individuals who want a large single-unit gold position.
