American Gold Eagle vs Buffalo - 22-Karat vs 24-Karat, Premiums, Sizes and IRA Use (2026)
The two flagship U.S. Mint gold bullion coins, compared on what actually matters.
The American Gold Eagle and the American Gold Buffalo are both official U.S. Mint bullion coins, both contain one troy ounce of pure gold in their one-ounce size, and both are IRA-eligible. The main difference is the alloy: the Eagle is 22-karat (91.67% gold, with silver and copper for durability), while the Buffalo is 24-karat (99.99% pure gold).
Because both one-ounce coins hold the same amount of gold, purity doesn't change their metal value. The practical differences are sizes, premiums, durability and personal preference.
For an IRA or a long-term stack, either is an excellent choice. Pick the Eagle if you want fractional sizes and a slightly harder coin; pick the Buffalo if you prefer pure 24-karat gold. Whichever is cheaper over spot on the day you buy is often the better value.
Side by Side
Table: American Gold Eagle vs American Gold Buffalo | | American Gold Eagle | American Gold Buffalo | |---|---|---| | Issuer | U.S. Mint | U.S. Mint | | First issued | 1986 | 2006 | | Purity | 22-karat, 91.67% gold | 24-karat, 99.99% gold | | Gold content, 1 oz coin | 1 troy oz pure gold | 1 troy oz pure gold | | Total weight, 1 oz coin | About 1.09 oz (alloy included) | 1 oz | | Sizes | 1, 1/2, 1/4, 1/10 oz | Mainly 1 oz | | Face value, 1 oz | $50 | $50 | | Durability | Harder, more scratch-resistant | Softer, scratches more easily | | IRA-eligible | Yes, by law | Yes | | Design | Lady Liberty; eagle reverse | Native American profile; American bison |
Purity vs Gold Content
The Eagle's 22-karat alloy confuses some buyers. A one-ounce Gold Eagle weighs a bit more than an ounce so that it contains a full troy ounce of pure gold. The added silver and copper make it harder and more resistant to scratches and dents.
The Buffalo is 99.99% pure, which some buyers prefer for its own sake and which some international buyers favor. Pure gold is softer, so Buffalos need more careful handling.
IRA Eligibility
IRS rules generally require gold in an IRA to be at least 99.5% pure. The American Gold Eagle is a statutory exception: U.S. law specifically allows American Eagle coins in IRAs despite their 91.67% purity. The Buffalo qualifies on purity. Both are widely held in gold IRAs. See IRS-approved gold.
Premiums and Pricing
Premiums vary with demand. Historically, both coins have carried similar premiums over spot, with one sometimes slightly cheaper than the other depending on mint supply and market conditions. Fractional Eagles carry higher premiums per ounce than one-ounce coins.
Ask your dealer for quotes on both at the same time and choose based on the premium if you have no preference. See gold premiums and spreads.
Sizes and Flexibility
The Eagle's fractional sizes make it more flexible for smaller budgets, gifts or selling in small amounts. The Buffalo has been issued almost entirely as a one-ounce coin, with fractional versions only briefly. For IRA purposes, one-ounce coins are the norm because they carry lower premiums per ounce.
Liquidity and Resale
Both coins are among the most widely recognized gold coins in the world and are easy to sell to U.S. dealers. Neither triggers the dealer 1099-B reporting that applies to certain other gold coins sold in quantities of 25 or more, though you still owe tax on any gain when selling outside an IRA. See how to buy physical gold.
Proof vs Bullion Versions
Both coins are also issued as proofs with special finishes and packaging. Proof versions carry much higher premiums and usually sell back for much less than their purchase price. For an IRA, standard bullion versions are generally the better value. See proof coins vs bullion for an IRA.
Eagle vs Buffalo vs Other Popular Coins
Table: How they compare with other common gold coins | Coin | Purity | IRA-eligible | Note | |---|---|---|---| | American Gold Eagle | 91.67% | Yes (by law) | Most recognized U.S. gold coin | | American Gold Buffalo | 99.99% | Yes | Pure 24-karat U.S. coin | | Canadian Gold Maple Leaf | 99.99% | Yes | Advanced security features | | South African Krugerrand | 91.67% | No | Popular outside IRAs |
Storage Considerations
In an IRA, both coins are stored by the depository, often in their original mint tubes. If you plan to take coins home in retirement, segregated storage ensures you receive the exact coins you bought, which matters most for Buffalos because their softer gold can pick up marks. See segregated vs non-segregated storage.
Which Should You Choose?
Choose the Gold Eagle If...
You want fractional sizes, a more durable coin or the most recognized U.S. gold coin.
Choose the Gold Buffalo If...
You prefer 24-karat purity and plan to hold one-ounce coins.
Many savers simply hold both, buying whichever carries the lower premium at the time.
Want Eagles or Buffalos in a gold IRA? Augusta's free kit explains its IRA-eligible gold products.
Get Free Gold IRA KitIs a Gold Eagle or Gold Buffalo better?
Neither is better in metal value; both 1 oz coins contain one ounce of pure gold. Choose by premium, size and preference.
Why is the Gold Eagle only 22-karat?
It's alloyed with silver and copper for durability, but still contains a full ounce of pure gold.
Are Gold Eagles allowed in an IRA?
Yes. U.S. law specifically allows them despite their purity.
Do Gold Buffalos scratch easily?
Pure 24-karat gold is softer, so handle Buffalos carefully.
Which sells back for more?
Both are highly liquid; buyback prices depend on the dealer and market conditions.
Hold U.S. Gold Coins in Your IRA
Augusta's free kit explains which gold coins are IRA-eligible and how they're stored.