Silver held in an IRA must be at least .999 fine under Internal Revenue Code Section 408(m), one purity notch stricter than the .995 rule for gold. One coin gets in anyway despite the math working out fine on its own: the American Silver Eagle is named directly in the statute, a belt-and-suspenders provision that matters far more for its gold counterpart. Here is what actually qualifies, and what does not.
The IRS Purity Rule for IRA-Eligible Silver
Section 408(m)(3)(B) of the Internal Revenue Code allows precious metals bullion in an IRA if it meets “the minimum fineness that a contract market requires for metals which may be delivered in satisfaction of a regulated futures contract,” provided it stays in the physical possession of an IRA trustee. For silver, that threshold works out to .999 fine, or 99.9 percent pure. Gold clears the same test at .995, and platinum and palladium both require .9995.
The rule applies to coins and bars alike unless a specific coin is named elsewhere in the statute, which is the exception covered next.
The American Silver Eagle’s Named Exception
Section 408(m)(3)(A) separately permits certain coins described in federal coinage law at 31 U.S.C. 5112, listed by name rather than tested for fineness. The American Silver Eagle is one of them, under 5112(e). That sounds like a loophole, and for the American Gold Eagle it genuinely is one: at 91.67 percent pure, the Gold Eagle would fail the general .995 test and needs its named-coin status to qualify at all.
The Silver Eagle’s situation is different. It is struck at .999 fine, so it clears the general bullion rule on its own merits. Being named in the statute is mostly redundant for silver, though it does mean the Silver Eagle’s eligibility has never depended on a fineness measurement in the way the Gold Eagle’s does.
IRA-Eligible Silver Coins, Ranked by Acceptance
Custodians and depositories recognize a fairly consistent set of sovereign-mint coins. The most liquid and widely stocked are listed first.
| Coin | Fineness | Acceptance |
|---|---|---|
| American Silver Eagle | .999 | Universal |
| Canadian Silver Maple Leaf | .9999 | Universal |
| Austrian Silver Philharmonic | .999 | Universal |
| British Silver Britannia | .999 | Universal |
| Australian Silver Kangaroo | .9999 | Widely accepted |
| Australian Silver Kookaburra | .999 | Widely accepted |
| Mexican Silver Libertad | .999 | Widely accepted |
| Chinese Silver Panda | .999 | Widely accepted |
All eight meet the .999 fineness rule outright, so none of them need a named-coin exception the way the Gold Eagle does. “Widely accepted” rather than universal mostly reflects how often a particular custodian’s approved-product list includes it and how deep the resale market is, not any doubt about IRS eligibility.
IRA-Eligible Silver Bars and Accredited Refiners
Bars must clear the same .999 fineness bar and, in practice, come from a refiner accredited by a national mint or a COMEX- or LBMA-approved assayer. That second condition is not written into the tax code directly. It flows from the futures-market standard the statute points to, and custodians apply it as an intake rule, similar to how gold bar brand acceptance works. Refiners that regularly clear custodian intake include PAMP Suisse, Valcambi, the Royal Canadian Mint, Asahi Refining, Heraeus, and Sunshine Minting, in sizes commonly running from 1 ounce up to 100 ounces or larger. You can check any refiner against the LBMA’s current silver Good Delivery list before you buy.
As with gold, an unbranded or off-list bar can still be real silver, but it will cost you at resale if the next buyer has to price in an assay before accepting it.
Silver vs Gold Eligibility Rules: What’s Different
The purity bar itself is the main difference: .999 for silver against .995 for gold, with platinum and palladium set higher still at .9995. The practical effect shows up in the named-coin exceptions. The Gold Eagle needs its exception to qualify at all, since its actual fineness falls short of the general rule. The Silver Eagle and the Platinum Eagle are also named in the statute, but both already meet their respective purity thresholds independently, so naming them changes little in practice. If you are weighing how much of each metal to hold, our Gold IRA vs Silver IRA comparison covers volatility, storage costs, and allocation in more depth than fits here.
Common Mistakes: Silver That Does Not Qualify
- Pre-1965 U.S. dimes, quarters, and half-dollars (90 percent silver, well under .999)
- 1965 to 1970 Kennedy half-dollars (40 percent silver)
- Morgan and Peace silver dollars, prized by collectors but only 90 percent fine
- Sterling silver items at .925 fineness
- Numismatic or proof coins from non-Eagle sources, priced for their rarity rather than their metal content
- Generic rounds from mints with no COMEX or LBMA accreditation
“Junk silver” is a common phrase for the first two categories, and it is a fitting one for IRA purposes even though the coins themselves are perfectly legitimate to own outside a retirement account.
Frequently Asked Questions
Can I add silver to an existing Gold IRA?
In most cases, yes. A self-directed precious metals IRA can typically hold gold and silver together under the same custodian, provided the products you choose meet each metal’s own purity rule and your custodian’s approved-product list includes them.
Do proof silver coins qualify for a Precious Metals IRA?
Proof and uncirculated American Silver Eagles do qualify, since they fall under the same named-coin exception as the standard bullion version. Numismatic proof coins from other mints, priced mainly for rarity rather than silver content, generally do not.
The Key Takeaway
Silver in an IRA has to clear .999 fine, a notch above gold’s .995 threshold, and the American Silver Eagle qualifies twice over: by name in the statute and on its own metal content. Stick to the sovereign-mint coins and accredited-refiner bars covered here, skip anything numismatic or pre-1965, and confirm your custodian’s product list before you buy.
