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Last updated: August 5, 2026 · By White Metal Resources Editorial
Quick answer: A precious metals IRA holds physical bullion at an IRS-approved depository under section 408(m)(3), so the sleeve is 100 percent gold, silver, platinum, or palladium. A broad commodities ETF such as DBC, GSG, or PDBC holds futures across energy, grains, industrial metals, and only a slice of precious metals. Structure, tax form, and metals weight all differ.
DBC and GSG are structured as commodity pools that issue a Schedule K-1 to the investor. PDBC is a 1940 Act fund structured to avoid K-1 and issue a Form 1099. None of the three delivers physical bullion at the wrapper layer.
Short on time? The essentials
- A precious metals IRA sleeve owns physical bullion cleared under IRC 408(m)(3): silver .999, platinum .9995, palladium .9995, gold .995. A commodities ETF owns futures contracts on a basket of commodities.
- Precious metals weight in a broad commodity index is a single-digit or low double-digit slice, not a majority. A pure metals sleeve is by definition 100 percent metals.
- DBC (Invesco DB Commodity Index Tracking Fund) is a commodity pool. It tracks the DBIQ Optimum Yield Diversified Commodity Index and issues a Schedule K-1 to the investor.
- GSG (iShares S&P GSCI Commodity-Indexed Trust) is a commodity pool tracking the S&P GSCI Total Return Index, production-weighted and skewed to energy. It also issues a Schedule K-1.
- PDBC (Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF) is registered under the 1940 Act, uses a Cayman subsidiary, and issues a Form 1099 rather than a K-1.
- Inside an IRA the K-1 concern is administrative, not usually a UBTI hit: Section 1256 futures gains are portfolio income, not unrelated business taxable income under IRC 512.
- Tax drag on futures-based funds comes mainly from contango, roll yield, and the fund's expense ratio, not from the K-1 itself. See each fund's prospectus for its current ratio.
- Commodity ETFs cannot be redeemed for physical bullion by an individual. Only large authorized participants create and redeem in kind, and not in metal.
- Federal regulators cover both markets. The 2020 CFTC order against JPMorgan cited spoofing across gold, silver, platinum, and palladium futures.
- Both vehicles can sit inside an IRA. The choice turns on whether you want the metal itself or a diversified futures basket.
This page lines up a physical precious metals IRA sleeve against three broad commodities ETFs that some savers reach for as a stand-in: DBC, GSG, and PDBC. All four vehicles can sit inside a retirement account. What each actually owns, how it is taxed, and how much precious metal ends up in the wrapper are not the same.
Every rule and figure below traces to a statute, an IRS document, an SEC or CFTC page, or an issuer prospectus. Numbers that shift with market conditions, such as expense ratios and index weights, should be verified at the fund page linked in the sources list.
What is a precious metals IRA?
A precious metals IRA is a self-directed IRA that holds IRS-approved physical bullion. The federal tax rules match a traditional or Roth IRA. What changes is the asset. The account owns coins or bars that clear a stated fineness minimum and sit in a regulated depository.
Three parties keep the account compliant. A custodian, a bank, or an IRS-approved non-bank trustee holds legal title and files the tax paperwork. A dealer supplies the metal. An approved depository takes physical possession on behalf of the account. See what a precious metals IRA is for the mechanics.
The metals-specific rule is short and specific. IRC section 408(m)(3) carves gold, silver, platinum, and palladium bullion out of the general collectibles ban if the metal meets a fineness minimum drawn from commodity-market delivery standards (source: 26 U.S.C. section 408). Silver must be .999, platinum and palladium .9995, gold .995.
What are DBC, GSG, and PDBC?
All three are exchange-traded products that give indirect exposure to a broad basket of commodities through futures contracts. None of them holds physical metal in a vault. The differences are the index they follow, the way the fund is organized under U.S. law, and the tax form the investor receives at year end.
DBC: Invesco DB Commodity Index Tracking Fund
DBC is a commodity pool organized as a limited partnership. It seeks to track the DBIQ Optimum Yield Diversified Commodity Index Excess Return, a rules-based index of fourteen commodities across energy, base metals, precious metals, and agriculture. Because DBC is a partnership, investors receive a Schedule K-1 each year rather than a Form 1099. See the Invesco DBC product page at invesco.com.
GSG: iShares S&P GSCI Commodity-Indexed Trust
GSG is a commodity pool that holds a long position in a single futures contract tied to the S&P GSCI Total Return Index. The GSCI is production-weighted, so its weights lean heavily to energy, with a smaller slice for grains, livestock, industrial metals, and precious metals. GSG also issues a Schedule K-1. See the iShares GSG product page at ishares.com.
PDBC: Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF
PDBC is registered under the Investment Company Act of 1940 as an actively managed ETF. It uses a wholly owned Cayman Islands subsidiary to gain commodity-futures exposure while staying inside the 1940 Act framework. That structure lets PDBC issue a Form 1099-DIV instead of a K-1, which is where the "No K-1" in the fund name comes from. See the Invesco PDBC product page at invesco.com.
Structure and tax form: K-1 vs 1099
The single sharpest structural line among these products is the tax form. A commodity pool such as DBC or GSG passes through its income and gains to shareholders on a Schedule K-1 under partnership rules. A 1940 Act fund such as PDBC pays out distributions taxable to shareholders on a Form 1099. Which one you hold changes what your custodian receives and files.
| Feature | Precious metals IRA sleeve | DBC | GSG | PDBC |
|---|---|---|---|---|
| Legal structure | Self-directed IRA holding physical bullion at an approved depository | Commodity pool, limited partnership | Commodity pool trust holding a single futures contract | Actively managed ETF under the 1940 Act, with a Cayman subsidiary |
| Underlying holdings | Physical gold, silver, platinum, or palladium meeting IRC 408(m)(3) fineness | Futures on the DBIQ Optimum Yield Diversified Commodity Index | Long a single futures contract on the S&P GSCI Total Return Index | Futures on a broad commodity universe, actively managed |
| Tax form to investor | Standard IRA reporting on Form 5498 and Form 1099-R at distribution | Schedule K-1 (Form 1065) | Schedule K-1 (Form 1065) | Form 1099-DIV |
| Precious metals inside the wrapper | 100 percent of the sleeve, by definition | A single-digit or low double-digit slice of the index | A single-digit slice of the index, mainly gold | A single-digit or low double-digit slice, similar universe to DBC |
| Physical delivery to individuals | In-kind distribution possible after eligibility | Not available | Not available | Not available |
Sources: 26 U.S.C. section 408; Invesco DBC and PDBC product pages; iShares GSG product page; SEC EDGAR filings for each fund. Verify current holdings and weights at each fund page. Checked June 2026.
The IRA angle: a K-1 arriving inside a self-directed IRA is rarely a tax bill by itself. Section 1256 futures gains and other portfolio-type income inside a K-1 partnership are generally excluded from unrelated business taxable income under IRC section 512(b) (source: IRS Publication 598). The friction is administrative: the custodian may need to receive, review, and file the K-1, and some self-directed IRA custodians will not accept commodity pool interests at all. Confirm the point before you buy.
How much precious metal is actually inside each ETF?
The core question a metals-focused saver should ask about DBC, GSG, or PDBC is simple: how much of the fund is actually precious metals? The answer is a slice, not the whole. These are broad commodity vehicles first, and precious metals are one bucket among four or five.
The DBIQ Optimum Yield Diversified Commodity Index behind DBC uses fixed target weights across fourteen commodities. Gold and silver together typically sit around a low double-digit share of that index. The bulk is in energy and agriculture. PDBC uses a similar commodity universe on the active side.
The S&P GSCI Total Return Index behind GSG is production-weighted. That method has historically left precious metals at a single-digit slice, mostly gold, with the majority in crude oil and refined products (source: S&P Dow Jones Indices). Verify the current weight at each fund page before you commit.
Two takeaways matter for a saver whose objective is precious metals exposure. First, no broad commodities ETF is a metals proxy: at most it is a diluted metals holding wrapped inside an energy-heavy basket. Second, the bulk of the price behavior of DBC, GSG, or PDBC comes from oil, natural gas, and grains, not from gold or silver. If you want an actual metals allocation, a physical sleeve at 100 percent metals is the direct route.
Tax drag: contango, roll yield, and the wrapper
Tax drag inside a retirement wrapper works differently from a taxable brokerage account. Once the vehicle sits inside an IRA, current-year taxation on dividends, futures gains, and interest is generally deferred. What remains is the cost the fund itself carries against your position year after year.
Futures-based commodity ETFs face three recurring costs that a physical bullion sleeve does not.
- Contango and roll yield. When a futures curve is upward-sloping, the fund sells a lower-priced expiring contract and buys a higher-priced longer-dated one. Repeated over the year, that pattern subtracts return relative to the spot commodity. The DBIQ Optimum Yield methodology tries to soften this by selecting the futures month with the highest implied roll yield, but the mechanic remains.
- Expense ratio. Each fund publishes an annual expense ratio that is netted from the fund's assets. Verify the current figure at the fund's product page in the sources list. Over decades, the expense ratio compounds directly against balance.
- Section 1256 mark-to-market inside the fund. Regulated futures contracts held by a commodity pool are marked to market at year end under IRC section 1256. Inside an IRA the character of the gain is muted because distributions come out as ordinary income anyway. Outside an IRA, the 60 percent long term, 40 percent short term split matters more.
A physical bullion sleeve inside an IRA has none of those three lines. It carries a different cost profile: a one-time dealer spread on the metal, a flat annual custody fee, and an annual storage fee at the depository. Neither cost stack is universally lighter. The right question is which drag you want your money to face.
Ownership chain and physical delivery
A physical bullion sleeve places the metal at an IRS-approved depository. The custodian is the legal titleholder, and the depository takes physical possession under IRC 408(m)(3). Depositories such as Delaware Depository, Brink's Global Services, and International Depository Services keep insured storage records on the account.
A commodity ETF share sits at a broker as a fund unit. Behind that unit sit futures contracts held by the fund. Behind those futures sit clearinghouses and exchanges regulated by the Commodity Futures Trading Commission. None of those layers gives an individual investor access to physical metal. Creation and redemption are done in cash or in fund-basket kind, by large authorized participants only.
If a stated goal is to retire holding coins you can inspect and, once eligible, take home as an in-kind distribution, only the physical metals IRA path supports that. See how to open a precious metals IRA for the setup sequence.
Where the fees land
Both vehicles cost money to run. The cost lines are not the same and neither wins across all balances.
| Cost line | Precious metals IRA sleeve | Commodities ETF (DBC, GSG, or PDBC) inside a broker IRA |
|---|---|---|
| Account setup | Common one-time fee paid to the self-directed custodian | Usually none at large brokers |
| Annual custodian fee | Flat annual custodian fee for administration | Often zero at major brokers, sometimes a small IRA fee below a balance floor |
| Storage or vault fee | Annual depository fee, higher for segregated storage | Not applicable, the fund holds futures rather than physical goods |
| Asset-side markup | Dealer spread on each metal purchase and sale | Fund expense ratio netted from NAV, plus a bid-ask spread on trades |
| Roll yield drag | Not applicable | Recurring cost when the futures curve is in contango |
| K-1 administrative overhead | Not applicable | Applies to DBC and GSG inside an IRA, custodian dependent |
Sources: fund prospectuses and product pages linked in the sources list; dealer-disclosed fee schedules; SEC investor alert on self-directed IRAs. Checked June 2026.
The pattern that matters most is how a percentage cost compounds against a balance over decades. The calculator below models the drag inside a retirement wrapper. Fixed dollar fees hit small balances hardest, and the dealer spread on metals is a separate drag on top.
Precious metals IRA fee-drag calculator
Precious metals IRAs charge mostly flat dollar fees (setup, annual custodian, storage). Flat fees take a much bigger bite out of a small account than a large one. Enter your numbers to see the drag.
Estimate only. Fee amounts vary by provider and are often not published; enter figures you confirm in writing. This tool ignores metal price changes and the dealer spread, which also affect returns. Not financial advice.
Worked example: $100,000 across sleeves
Picture a saver at age 62 who rolls $100,000 from an old 401(k) and wants precious metals exposure inside a retirement account. She weighs a full 100 percent physical metals sleeve against putting the same $100,000 into DBC or PDBC inside a broker IRA for a diversified commodity basket.
- Route A: physical metals sleeve. She buys IRS-approved silver, gold, and a small platinum position at an approved depository. Assume $300 a year in flat custody and storage, which equals 0.30 percent of the balance at that size. The dealer spread sits on top and is paid up front. Every dollar in the sleeve tracks metal prices.
- Route B: DBC. She buys $100,000 of DBC in her broker IRA. Assume the fund's expense ratio is netted from NAV each year. Around a low double-digit share of the balance behaves like precious metals; most of the rest behaves like energy and agriculture. She receives a Schedule K-1 at year end that the custodian handles inside the IRA.
- Route C: PDBC. Same $100,000, similar commodity universe as DBC, but the year-end tax form is a 1099-DIV. Precious metals exposure is again a slice, not the majority.
The honest read is that Routes B and C give her a diversified commodity basket wrapped in a broker IRA, not a metals sleeve. If her goal was inflation-linked exposure across many commodities, an ETF fits. If her goal was precious metals specifically, a physical sleeve gives her that at 100 percent. This is an illustration, not financial advice. Consult a licensed advisor for your situation.
When each vehicle tends to fit
Neither route fits every saver. The right answer depends on what the saver actually wants exposure to.
A broad commodities ETF tends to fit savers who already hold a diversified brokerage IRA, want exposure to energy and agriculture along with a small metals allocation, and prefer a fund unit they can trade in seconds during market hours. Between the three, PDBC's 1099 structure spares the K-1 friction some custodians dislike inside an IRA. DBC and GSG cover similar commodity ground with the K-1 attached.
A precious metals IRA tends to fit savers who already hold $50,000 or more in an eligible plan and want the metal itself rather than a futures basket. It also fits savers who want a portion of retirement outside of equity-market drawdowns.
See metals IRA versus mining stocks and precious metals as an inflation hedge for adjacent comparisons. To vet a provider, start with the shortlist at best precious metals IRA companies or the framework at how to choose a precious metals IRA company.
When a precious metals IRA is a bad idea
A balanced comparison has to name when the physical metals side works against you. For several savers, a broker IRA with an ETF, index fund, or plain equity mix is the honest answer.
- You have no retirement base yet. A metals sleeve is a diversification move on top of a broader mix. A metals-only IRA as the only retirement money removes the compounding income a diversified account can generate.
- Your objective is broad commodity exposure, not metals. If the reason you are shopping is inflation across energy, food, and industrial metals, a broad commodities ETF is closer to that objective than a metals sleeve. The vehicle and the goal should match.
- A small balance against the fee drag. Setup, annual custody, storage, and the dealer spread are largely fixed. On a small metal balance those costs eat a large share. Silver's bulk makes the storage line a bit heavier than gold's.
- You may need the money within a few years. Metals swing hard short-term, and selling means crossing the dealer spread again. Before age 59.5 you also owe the 10 percent federal additional tax on top of ordinary income tax.
- You are chasing a guaranteed return. Nobody can predict where any of these prices will go. A pitch that promises guaranteed gains is a warning sign, and matches the pattern regulators have acted on (see the 2020 CFTC order at Release 8260-20).
- The offer routes you around the trustee rule. A home-storage metals pitch tries to sidestep the physical-possession requirement and puts the account at prohibited-transaction risk.
If one of these describes your situation, slowing down is the sensible call.
Metals IRA versus commodities ETF questions, answered
Is DBC or GSG a precious metals investment?
No, not primarily. Both are broad commodity index vehicles. DBC's index has gold and silver as fixed slices totalling roughly a low double-digit share of the index, and GSG's production-weighted GSCI index has held precious metals at a single-digit slice, mostly gold. The bulk of both funds tracks energy and agriculture.
Why does PDBC issue a 1099 instead of a K-1?
PDBC is registered under the Investment Company Act of 1940 and uses a wholly owned Cayman Islands subsidiary to gain commodity-futures exposure while keeping the top-level fund inside the 1940 Act framework. That structure lets the fund distribute income on a Form 1099-DIV rather than pass through as partnership income on a Schedule K-1. See the fund's prospectus at the Invesco PDBC page for the current arrangement.
Does a K-1 create a tax bill inside an IRA?
Rarely. Section 1256 futures gains inside a commodity pool are generally excluded from unrelated business taxable income under IRC section 512(b), so the K-1 is normally an administrative filing, not a taxable event inside the IRA (source: IRS Publication 598). The friction is that the custodian has to receive, review, and file the K-1, and some self-directed custodians will not accept commodity pool interests at all. Confirm before purchase.
Can I take physical delivery of metal from DBC, GSG, or PDBC?
No. All three are futures-based funds. There is no path for an individual investor to redeem shares for physical bullion. A physical precious metals IRA supports an in-kind distribution once the account holder is eligible, with the fair market value taxed as ordinary income at that date under the standard IRA rules.
Are these ETFs eligible for a precious metals IRA custodian?
Usually no. Self-directed metals IRA custodians focus on physical bullion at an approved depository. Fund shares live at a broker-dealer under IRC section 408(a). A saver who wants both often uses two accounts: a self-directed metals IRA for bullion and a plain broker IRA for the ETF. Verify with each custodian before assuming compatibility.
Which is cheaper over decades, a metals IRA sleeve or a commodities ETF?
Neither wins across all balances. A commodities ETF inside a broker IRA usually has the lower wrapper-level cost because many brokers charge no annual IRA fee and no trading commission. The ETF still carries an expense ratio and, on futures-based funds, roll-yield drag. A metals IRA adds setup, custody, storage, and dealer spread. See gold IRA fees for the metals side and each fund page for the ETF side.
Is there a version of these ETFs that holds physical precious metals?
Yes, but they are different products. Physically backed grantor trusts such as GLD, IAU, SLV, and SIVR hold specific metals at a vault under a trust structure. They are not commodity index funds like DBC, GSG, or PDBC. Inside a taxable account, physical bullion grantor trusts hit the collectibles cap on long-term gains; inside an IRA the wrapper rules apply instead.
Do RMDs work the same for both routes?
Yes. Both a metals IRA sleeve and an ETF inside an IRA follow the standard traditional IRA rules. Required minimum distributions start at age 73 today and rise to 75 in 2033 for people born in 1960 or later (source: IRS RMD FAQs). A Roth IRA has no required minimum distribution during the owner's lifetime.
Sources
- Cornell Legal Information Institute, 26 U.S.C. Section 408. Checked June 2026.
- IRS, Investments in collectibles in individually directed qualified plan accounts (Issue Snapshot). Checked June 2026.
- IRS, Publication 590-A, Contributions to Individual Retirement Arrangements. Checked June 2026.
- IRS, Publication 590-B, Distributions from Individual Retirement Arrangements. Checked June 2026.
- IRS, Publication 598, Tax on Unrelated Business Income of Exempt Organizations. Checked June 2026.
- IRS, Required Minimum Distributions FAQs. Checked June 2026.
- Invesco, DB Commodity Index Tracking Fund (DBC) product page and prospectus. Checked June 2026.
- Invesco, Optimum Yield Diversified Commodity Strategy No K-1 ETF (PDBC) product page and prospectus. Checked June 2026.
- iShares, S&P GSCI Commodity-Indexed Trust (GSG) product page and prospectus. Checked June 2026.
- S&P Dow Jones Indices, S&P GSCI methodology and factsheet. Checked June 2026.
- U.S. Securities and Exchange Commission, EDGAR company search for fund registration filings. Checked June 2026.
- U.S. Commodity Futures Trading Commission, Release 8260-20 (JPMorgan spoofing order). Checked June 2026.
- SEC Office of Investor Education, Investor Alert on self-directed IRAs and the risk of fraud. Checked June 2026.
