Updated: August 6, 2026

OPRS may receive compensation when readers open an account through partner links on this page. Our analysis is based on independent research, BBB data, and IRS publications.

Silver bar eligibility inside an IRA turns on the same two prongs as gold. The bar must clear the statutory fineness floor. The refiner must sit on the London Bullion Market Association Good Delivery list, or on a recognized commodity exchange approved-brand list such as the CME Group COMEX silver contract.

The current-production roster is short. Sunshine Minting, Asahi Refining, Perth Mint, Royal Canadian Mint, and Valcambi cover the bulk of U.S. self-directed IRA silver bar flow today. A second tier of legacy-recognized brands (Johnson Matthey, Engelhard, Republic Metals, and Ohio Precious Metals) remains bookable when the original bar and packaging are intact.

This page maps the statutory basis, the current-production and legacy rosters, the fineness and weight formats U.S. depositories accept, and the intake mechanics. Every source is linked to an official document at the end.

Table of contents show

Statutory basis: IRC 408(m)(3)(A)(ii) and the LBMA silver list

The Internal Revenue Code bars IRAs from holding collectibles under IRC section 408(m)(1). Paragraph (3) carves out a narrow bullion exception. Subparagraph (A)(ii) reaches silver bullion bars that meet a minimum fineness of .999. The floor matches the American Silver Eagle coin standard set by the U.S. Mint.

The second prong is refiner credentialing. The bar must be refined by a person accredited by a recognized commodity exchange or by a national government mint. The LBMA Good Delivery list is the authoritative roster the industry defers to. The IRS does not republish the list; it incorporates the framework by reference.

The LBMA Good Delivery framework maintains separate rosters for gold and silver refiners. A refiner accredited for gold is not automatically accredited for silver. Depositories cross-check the silver list at intake against the hallmark stamped on the bar and the accompanying assay documentation.

The dual result: a .999 bar from an unaccredited refiner fails the test. A .9999 bar from an LBMA-listed silver refiner clears both prongs and books into the IRA under the same rules as any other eligible silver product.

Current-production silver bar refiners

Five refiners account for most U.S. IRA silver bar orders in the current production window. Each holds LBMA Good Delivery accreditation for silver as of 2026. All maintain a retail catalog spanning the 1 oz through 100 oz range routinely booked by U.S. depositories.

Refiner	Country	Standard fineness	Retail size range	OPRS deep page
Sunshine Minting	United States (Idaho)	.999	1 oz to 100 oz	Sunshine Mint silver bars in IRA
Asahi Refining	United States and Canada	.999	1 oz to 100 oz
Perth Mint	Australia	.9999	1 oz to 1 kg
Royal Canadian Mint	Canada	.9999	10 oz to 100 oz (retail)
Valcambi	Switzerland	.999	1 g to 1 kg (CombiBar), 1 oz to 100 oz

Table 1. Current-production silver bar refiners routinely accepted by U.S. self-directed IRA depositories. All hold LBMA Good Delivery accreditation for silver. Standard fineness reflects the retail catalog; the statutory floor under IRC 408(m)(3)(A)(ii) is .999. Source: LBMA Good Delivery silver list; U.S. depository intake rosters.

Sunshine Minting is the dominant U.S. silver bar producer for retail IRA flow. Its bars carry the MintMark SI security feature, a diffraction pattern visible with a decoder lens that depositories check on intake. The Sunshine Minting plant in Coeur d’Alene, Idaho, also strikes blanks for the U.S. Mint’s American Silver Eagle program under contract.

Asahi Refining operates U.S. and Canadian refineries that absorbed the North American gold and silver operations of Johnson Matthey in 2015. Bars stamped Asahi replace new Johnson Matthey NA production. Perth Mint silver bars carry the state government of Western Australia backing. Valcambi is best known for its CombiBar format, a scored 100 g silver bar divisible into 100 one-gram pieces.

Legacy-recognized brands still IRA-eligible when intact

Several silver bar brands are no longer in current production but remain IRA-eligible when the original bar and packaging are intact. Depositories track the legacy brands as continuing product because the underlying refiner credential was valid at the time of striking.

Johnson Matthey. The Johnson Matthey silver bar was the standard U.S. IRA silver product from the 1970s until 2015. Asahi Refining acquired the North American gold and silver operations that year. Johnson Matthey silver bars struck before the acquisition remain bookable when the hallmark and assay markings are clean and the bar is unaltered.

Engelhard. Engelhard was one of the two dominant U.S. silver bar names in the 1970s and 1980s alongside Johnson Matthey. The BASF acquisition of Engelhard in 2006 ended silver bar production. Engelhard bars carry a numismatic premium in secondary markets but remain IRA-eligible on the underlying refiner credential when intact.

Republic Metals Corporation (RMC). RMC was an LBMA-listed silver refiner based in Miami. The company filed for Chapter 11 bankruptcy in 2018. RMC bars struck before the filing carry a valid refiner credential and remain bookable by depositories. New RMC production ceased with the bankruptcy.

Ohio Precious Metals (OPM). OPM Metals held LBMA Good Delivery accreditation for silver from its Jackson, Ohio, refinery. The operation was acquired by Sunshine Minting and consolidated into the Idaho plant. OPM-branded silver bars from the pre-acquisition period retain their credential and remain IRA-eligible when unaltered.

The legacy-bar route matters most for owners rolling in silver they already hold outside the IRA, or buying secondary-market bars at a modest premium below new production. Depositories will not book a legacy bar that has been re-poured, re-serialized, or removed from a sealed assay envelope.

Fineness: .999 statutory floor, .9999 sovereign-mint standard

The statutory floor for silver bullion bars under IRC section 408(m)(3)(A)(ii) is .999. That is three-nines fine silver. It matches the American Silver Eagle coin standard and the standard retail bar product from U.S. and Swiss private refiners.

The Perth Mint and the Royal Canadian Mint strike silver bars at .9999 fineness. That is four-nines silver, one nine above the statutory floor. The higher purity is a sovereign mint branding choice rather than an IRA-eligibility requirement. Both formats clear the same statutory test.

The .999 test is rarely the binding constraint on modern retail silver bar orders. The refiner credential does the real filtering. A .999 silver bar from a hobbyist private refiner without LBMA or COMEX accreditation fails the second prong and is rejected at depository intake.

Weight formats: 1 oz to 100 oz

Retail silver bar catalogs cluster around four sizes for IRA flow. The 1 oz bar, the 5 oz bar, the 10 oz bar, and the 100 oz bar carry most of the volume. Sovereign mint catalogs sometimes add a 1 kg format (roughly 32.15 troy ounces).

The 1 oz bar is the most granular retail format. It carries the highest per-ounce premium above spot because minting cost is spread across a smaller silver weight. The 100 oz bar sits at the opposite end of the size curve. It carries the lowest per-ounce premium and books efficiently into segregated depository storage.

Most silver IRA orders route through the 10 oz and 100 oz formats. A 10 oz bar allocation of about 50 units gives fractional flexibility for a partial distribution or Roth conversion later. The 100 oz format is the cost leader for accumulation above roughly $3,000 at typical 2026 spot prices.

Depositories accept any weight that appears on the refiner’s official catalog. Custom-cut weights, hand-poured artisan bars, and unofficial finishes are rejected on intake even when the underlying refiner is LBMA-listed. The bar has to be a standard product line.

Assay card and sealed-tube packaging rule

Silver bars from 1 oz through 10 oz ship sealed in a tamper-evident assay card or a shrink-wrapped multi-bar sleeve. The card bears the individual serial number, the fineness, the weight, and the assayer’s signature or mint mark.

The 100 oz silver bar ships in a heavy plastic sleeve or a rigid case with an accompanying paper assay certificate. The sleeve is not always sealed on 100 oz product because the size makes tampering visible. A 100 oz bar with fresh tool marks or a broken serial-number sequence will be rejected at intake all the same.

Multi-bar retail sleeves from Sunshine Minting typically hold 20 one-ounce bars or 10 five-ounce bars in a factory shrink-wrap. Depositories accept the sleeve unopened, or accept the individual bars if the sleeve was opened by the dealer for a customer inspection. Opened sleeves have to be re-sealed by the dealer with a signed inspection tag.

The IRS does not set the packaging rule. It is a depository risk-control practice. IRS-approved depositories (Delaware Depository, IDS of Delaware, Brink’s Salt Lake City, and others on the standard custodian-recognized network) apply the same intake standard on silver as on gold.

Sovereign mint silver bars: Perth and Royal Canadian

Two sovereign mints produce silver bars that regularly appear in U.S. IRA orders. The Perth Mint in Western Australia is government-owned. Its silver bars carry the Perth Mint guarantee alongside the swan hallmark and are struck at .9999 fineness in the 1 oz, 10 oz, and 1 kg formats.

The Royal Canadian Mint produces LBMA Good Delivery silver bars at .9999 fineness. Its retail bar catalog centers on the 10 oz and 100 oz sizes, distributed alongside the Silver Maple Leaf coin. RCM bars carry embedded security features that dealers verify with mint-supplied tools.

The United States Mint does not produce retail silver bars. It produces the American Silver Eagle coin under a separate carve-out at IRC section 408(m)(3)(B). The U.K. Royal Mint produces Britannia silver bars in a thinner U.S. distribution network than Perth or RCM, but the bars remain IRA-eligible on the same statutory test.

Depository intake for silver bars

The self-directed IRA custodian is the party of record on the account. The custodian does not physically hold the silver bars. The IRS-approved depository does. The custodian records the bars, tracks serial numbers, and handles distribution or transfer paperwork.

At order time the custodian wires settlement funds to the dealer under the trust title of the IRA. The dealer ships the bars in sealed refiner packaging directly to the depository. The depository verifies serial numbers against the dealer’s manifest and books the bars under segregated or commingled storage.

Silver is bulkier per dollar than gold. A 100 oz silver bar allocation of $50,000 fills roughly 15 to 20 bars at typical 2026 spot. Depositories rate silver storage by weight rather than by ticket value, so silver storage fees are higher per dollar of holding than for a gold bar allocation of the same size.

The IRA owner never takes physical possession. Direct possession triggers a deemed distribution under IRC section 408(m). The bar value is taxed as ordinary income in the year of receipt. Under age 59 1/2 the 10 percent early-distribution penalty applies. The chain runs dealer to depository, mediated by the custodian.

What to check before authorizing an IRA silver bar order

Refiner appears on the current LBMA Good Delivery silver list or a recognized commodity exchange approved list. Confirm against the LBMA page directly.
Fineness is .999 or higher. Retail silver bars typically stamp .999 (U.S., Swiss) or .9999 (Perth Mint, Royal Canadian Mint), well above the statutory floor.
Bars ship in original sealed refiner packaging or a factory shrink-wrap sleeve. Assay card or sealed multi-bar tube with matching serial-number sequence.
Legacy-brand bars (Johnson Matthey, Engelhard, RMC, OPM) show clean hallmarks and intact assay documentation. Re-poured or re-serialized bars are rejected on intake.
Depository is on the IRA custodian’s approved list. Delaware Depository, IDS of Delaware, and Brink’s Salt Lake City handle the majority of U.S. silver IRA storage.
Chain of custody runs dealer to depository, mediated by the custodian. The IRA owner never takes physical delivery.

Each of these checks is a one-line confirmation with the dealer or custodian. Getting all six in writing before the wire is the cleanest way to avoid an intake rejection or a deemed-distribution error on a silver allocation.

Sources cited

OPRS is not a tax advisor or licensed financial advisor. This material is general educational information about IRA-eligible silver bullion bar refiners, not a recommendation to buy or sell any specific bar brand, size, or format, nor to allocate retirement assets to precious metals. Consult your tax advisor and licensed financial advisor on your specific situation before placing an IRA bullion order. Past performance is not a guarantee of future results.

IRA-Approved Silver Bar Brands: The Canonical List