The SDIRA Playbook: Tax-Free Alternatives Investing
How sophisticated investors use Self-Directed IRAs to buy metals, real estate, and private deals inside a tax-sheltered wrapper.
December 28, 2025
15 min read
Most Americans don't realize their retirement accounts can hold more than mutual funds. While Fidelity and Schwab limit you to stocks, bonds, and their proprietary products, a Self-Directed IRA opens the door to virtually any investment—including the alternatives that wealthy families have used for generations.
The Basics: What is an SDIRA?
A Self-Directed IRA is simply an IRA with a custodian that allows alternative investments. The same contribution limits, tax advantages, and withdrawal rules apply—you just have more investment options.
There are two main structures:
Custodian-Directed: The custodian holds assets and processes each transaction. More oversight, less flexibility.
Checkbook IRA: Your IRA owns an LLC. You manage the LLC with checkbook control. More flexibility, more responsibility.
The Tax Advantage
The math is compelling. Alternative investments often generate higher returns than traditional assets—and those returns compound tax-free in a Roth IRA.
Example: $50,000 Real Estate Syndication
Taxable Account
Initial Investment$50,000
5-Year Return (15% IRR)$50,567
Capital Gains Tax (23.8%)-$12,035
Net Proceeds$88,532
Roth SDIRA
Initial Investment$50,000
5-Year Return (15% IRR)$50,567
Tax on Withdrawal$0
Net Proceeds$100,567
Tax Savings: $12,035
What You Can (and Can't) Invest In
The IRS defines what's prohibited—everything else is fair game.
Allowed
• Real estate (rentals, syndications, land)
• Precious metals (IRS-approved gold, silver)
• Strategic metals (gallium, germanium)
• Private equity and venture capital
• Cryptocurrency
• Promissory notes and private lending
• Tax liens and deeds
• LLCs and private companies
Prohibited
• Collectibles (art, wine, antiques)
• Life insurance
• S-corporation stock
• Any transaction with disqualified persons
• Personal use property
Note: Strategic metals are allowed because they're industrial commodities, not collectibles.
SDIRA Strategies by Asset Class
Real Estate
The most popular SDIRA investment. Your IRA can own rental properties directly, invest in syndications, or participate in private REITs.
Key consideration: All expenses must come from the IRA, and all income must return to the IRA. You can't use personal funds to pay for repairs or pocket the rent.
Precious & Strategic Metals
Your IRA can hold physical gold, silver, platinum, and strategic metals like gallium and germanium. The metal must be stored at an IRS-approved depository—not your home.
Key consideration: Only certain purity levels qualify. American Eagle coins are allowed; rare collectible coins are not.
Private Equity & Startups
SDIRAs can invest in private companies, venture funds, and pre-IPO shares. Platforms like EquityZen and AngelList support SDIRA investments.
Key consideration: Ensure the investment documents allow IRA ownership. Some funds exclude retirement accounts.
The Prohibited Transaction Trap
The biggest risk with SDIRAs isn't market loss—it's making a prohibited transaction that disqualifies your entire IRA. Common mistakes:
• Buying property you or family members will use
• Paying yourself for managing IRA assets
• Lending IRA funds to yourself or family
• Using personal funds for IRA property expenses
• Commingling IRA and personal assets
Violation can result in the entire IRA being distributed and taxed, plus a 10% early withdrawal penalty if under 59½.
Rule of Thumb
If a transaction benefits you personally—beyond the growth of your IRA—it's probably prohibited. The IRA must be at arm's length from you and your family.
Getting Started
Setting up an SDIRA takes 1-2 weeks:
1. Choose a custodian: Compare Rocket Dollar, Alto IRA, and Directed IRA based on your investment plans.
2. Open the account: Complete application and fund via rollover or contribution.
3. Set up checkbook control (optional): If using a Checkbook IRA, form the LLC that your IRA will own.
4. Start investing: Direct your custodian to make investments on behalf of your IRA.
Bottom Line
SDIRAs are one of the most powerful tools for alternative investors. The ability to hold real estate, metals, and private deals in a tax-advantaged wrapper can add tens of thousands of dollars to your retirement. But the rules are strict—work with professionals and never cross the line into prohibited transactions.
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