Heraeus Gold Bars in a Gold IRA: German Refiner, Full Eligibility Picture

This guide covers Heraeus Precious Metals (Hanau, Germany) specifically. The separate Swiss entity Argor-Heraeus SA also carries the “Heraeus” name, and buyers regularly confuse the two. The disambiguation is in the first section below, before the eligibility analysis.

Two Heraeus brands, one German parent

The name “Heraeus” appears on bars from two distinct companies that operate independently and appear separately on the LBMA Good Delivery List.

Heraeus Precious Metals GmbH & Co. KG is the refining and precious metals trading division of Heraeus Group, a German technology and materials company founded in Hanau in 1851. Bars produced at the Hanau facility carry the brand name “Heraeus” and the Heraeus Group hallmark. This is the entity analyzed throughout this guide.

Argor-Heraeus SA is a separate Swiss refiner based in Mendrisio, Switzerland, in which Heraeus Group holds a stake. Bars from that facility carry the “Argor-Heraeus” brand name (not “Heraeus” alone) and the Argor-Heraeus hallmark. The corporate connection is real, but from a product and custodian standpoint, a Heraeus Hanau bar and an Argor-Heraeus Mendrisio bar are two different things with different markings. Some custodians list them separately on their approved-brand rosters.

For a full eligibility analysis of Argor-Heraeus bars, see our companion guide: Argor-Heraeus Gold Bars and the Gold IRA. This page focuses exclusively on bars produced under the Heraeus Hanau brand.

Heraeus and the LBMA Good Delivery standard

The London Bullion Market Association (LBMA) administers the Good Delivery accreditation program, the most widely referenced quality standard for gold and silver bars internationally. A refiner earns Good Delivery status by submitting to independent probing and assay, demonstrating consistent quality controls, and meeting the LBMA’s published production standards. Listings are reviewed periodically and can be removed for non-compliance.

For gold, the LBMA Good Delivery Rules specify the following baseline requirements:

Heraeus Precious Metals (Hanau) is listed on the LBMA’s current Good Delivery List for gold, published on lbma.org.uk. Retail bars produced at the Hanau facility typically carry a declared fineness of .9999 (999.9 parts per thousand), significantly above the LBMA’s own floor and above the IRS threshold for IRA eligibility.

Good Delivery status matters for custodians because it functions as a third-party quality verification. Rather than evaluating each refiner independently, a custodian can rely on the LBMA’s published list as a continuous accreditation signal. That is one reason LBMA-listed refiner bars dominate the self-directed IRA market.

IRS fineness requirements for gold bars in a self-directed IRA

The federal tax code draws a distinction between coins and bars when it comes to IRA-eligible precious metals. That distinction matters for understanding exactly where Heraeus bars fit.

Under IRS Publication 590-A, the underlying authority is IRC §408(m), which defines which precious metals are not classified as “collectibles” (the category excluded from IRAs). Paragraph (m)(3) creates a carve-out with two separate tracks:

• Track A (coins): Specific coins are named directly, including American Gold Eagle coins of all denominations, regardless of fineness. The American Gold Eagle at .9167 fine is eligible under Track A via statutory name recognition alone, not because it meets the .995 bar threshold.
• Track B (bullion bars): Bullion must meet a fineness equal to or exceeding the minimum required by a regulated futures contract market (COMEX, NYMEX, LME, LBMA, or equivalents) for delivery against a gold contract. For gold, COMEX specifies a minimum fineness of .995 (995 parts per thousand).

Heraeus .9999 fine gold bars qualify under Track B. The .9999 fineness exceeds the .995 floor by a substantial margin. Track B also requires that the bar be produced by an accredited refiner, assayer, or manufacturer. Heraeus’s LBMA Good Delivery status satisfies that requirement.

The coin vs. bar distinction explains a common point of confusion: someone researching “gold coin fineness” may encounter the Gold Eagle at .9167 and wonder whether fineness thresholds matter. For coins, named by statute, fineness is irrelevant to IRA eligibility. For bars, fineness is the primary test. Heraeus bars, at .9999, clear that test without ambiguity. For the complete picture on fineness across gold, silver, platinum, and palladium, see our guide IRS Fineness Requirements for Precious Metals in an IRA.

Bar formats Heraeus produces for the US retail market

Heraeus produces bars in two manufacturing formats, with different characteristics relevant to IRA buyers.

Minted (pressed) bars

Minted bars are cut from a gold strip to a precise weight, then stamped with the refiner’s design elements: the Heraeus wordmark, fineness (.9999), weight in grams and troy ounces, and a unique serial number. Each minted bar is sealed in a tamper-evident blister package that bonds the bar to a paper assay card carrying matching information.

Minted bars are the predominant format for retail IRA purchases because the sealed packaging preserves the authentication chain from refinery to depository. Opening the package voids that chain and can complicate custodian acceptance. Retail weights commonly available through US dealers include:

• 1 gram
• 2.5 grams
• 5 grams
• 10 grams
• 1 troy ounce (31.1035 grams)
• 50 grams
• 100 grams
• 1 kilogram (32.1507 troy oz)

Cast bars

Cast bars are produced by pouring molten gold into a mold and allowing it to solidify. The resulting bar has a more textured, irregular surface compared to the precise edges of a minted bar. Cast bars are still stamped with a serial number, fineness, and refiner’s mark, but they do not come in sealed blister packaging. Cast production is more common in larger weights (100 grams, 1 kilogram, and above) because the minting process becomes less cost-effective at higher masses.

Custodians typically accept cast bars from LBMA Good Delivery refiners, but their intake procedures differ. A cast bar delivered without a certificate of assay from the refiner may require independent assay verification at the buyer’s expense before the custodian logs it into the IRA account.

Serial numbers and assay cards: the authentication chain custodians rely on

The physical security of a self-directed gold IRA depends on a clear chain of custody from the refiner to the depository vault. Serial numbers and assay cards are the primary tools that maintain that chain.

What an assay card contains

A Heraeus assay card (also called a certificate of assay) that ships with a minted bar contains:

• The bar’s unique serial number, matching the number struck on the physical bar
• Declared fineness, expressed as parts per thousand (999.9 for Heraeus .9999 bars)
• Weight in grams and troy ounces
• The Heraeus production mark and refinery identification
• A tamper-evident seal that bonds the card to the blister package holding the bar

How custodians use the serial number

When a depository receives a bar shipment on behalf of an IRA custodian, staff verify that the serial number on the physical bar matches the assay card, confirm the seal is unbroken, and record the bar in the custodian’s inventory system under that unique number. The custodian then reports the bar’s fair market value as of December 31 each year on IRS Form 5498. When an IRA owner eventually takes a distribution, the serial number identifies exactly which bar leaves the vault.

For segregated storage accounts (where a specific owner’s bars are kept physically separated from others), the serial number is the legal identifier for your specific property. For commingled (pooled) accounts, serial tracking is still maintained within the custodian’s system even if the physical bars are stored together with bars of identical specification from other accounts.

This authentication system is not exclusive to Heraeus. Any LBMA Good Delivery refiner with serialized bar production follows a similar pattern. Heraeus’s practice of sealing minted bars in numbered blister packs aligns with what IRA-focused custodians expect to receive. The reason to confirm with your custodian is not whether Heraeus bars are generally acceptable, but whether that specific custodian has Heraeus on their internal approved-brand list and accepts the weights you intend to purchase.

Comparing Heraeus with other major bar refiners

From an IRS eligibility standpoint, LBMA Good Delivery bars at .9999 fineness are equivalent regardless of the refiner’s name on the bar. A Heraeus bar, a Credit Suisse bar, or a bar from any other LBMA-listed refiner at .9999 fine will clear the same IRC §408(m)(3)(B) test. The choice between refiners at that fineness level comes down to three practical factors:

• Premium over spot: Different refiner brands carry different premiums in the secondary market. Heraeus bars are a mainstream brand with typical dealer premiums consistent with other major European refiners.
• Custodian approval: Most custodians maintain approved-brand lists. Heraeus is widely listed, but always confirm before buying.
• Availability through your dealer: US dealers vary in which refiner brands they stock. Heraeus is available through major US precious metals dealers.

One nuance worth noting: the Credit Suisse brand underwent a corporate transition following UBS’s acquisition of Credit Suisse in 2023. Bars bearing the Credit Suisse hallmark continue to circulate in the secondary market and retain their LBMA provenance, but the refiner situation involves additional complexity. For a full breakdown, see our guide on Credit Suisse Gold Bars After UBS and IRA Eligibility. Johnson Matthey and Engelhard bars present a different scenario involving discontinued refiner operations, covered in our guide on Johnson Matthey and Engelhard Legacy Bars. Heraeus, by contrast, is an active operating refiner with a current LBMA listing.

What to confirm with your custodian before purchasing

IRS law establishes the floor for bar eligibility, but custodians add their own operational requirements on top. Before acquiring Heraeus bars for an IRA, work through these checkpoints with your custodian:

• Approved-brand confirmation: Ask specifically whether the custodian’s current approved list includes Heraeus Precious Metals (Germany). Distinguish from Argor-Heraeus (Switzerland) if needed.
• Accepted weight range: Most custodians accept standard retail weights from 1 troy ounce to 1 kilogram. Some have minimum weight requirements or decline very small denominations (such as 1-gram bars) due to per-item handling costs.
• Dealer-to-depository delivery: IRA rules require that metals purchased for an IRA be shipped directly from the dealer to the custodian-approved depository. The IRA owner cannot take possession at any point in transit. Confirm which depositories your custodian works with and ensure your dealer can ship directly there.
• Storage type: Segregated storage keeps your specific bars in a separate vault space; commingled storage pools identical-specification bars. Segregated storage is more expensive but preserves your specific serial numbers throughout. Confirm what your custodian offers and at what cost.
• Fee structure: Custodian fees typically combine an annual account fee with a storage fee. For small bars, per-item handling charges can make the economics unfavorable. Compare total annual cost against the value of the bars you plan to hold.