How to Buy Mortgage Notes with a Self-Directed IRA

Why Use an SDIRA for Note Investing

The single biggest advantage of buying mortgage notes inside a self-directed IRA (SDIRA) is tax-free compounding. When a borrower makes a monthly payment on a note held in your SDIRA, that payment -- principal, interest, and any escrow surplus -- flows back into the IRA without triggering a tax event. No capital gains tax. No ordinary income tax. The full amount is available to reinvest into additional notes immediately.

In a taxable account, a note generating a 10% annual return nets roughly 7% after federal and state income taxes (depending on your bracket). Inside a Roth SDIRA, that same 10% stays at 10%. Over a 20-year horizon, the difference between compounding at 7% and compounding at 10% is not marginal -- it is the difference between doubling your money and nearly quadrupling it.

Most note investors already have retirement savings sitting in a traditional IRA or an old 401(k) from a previous employer, earning market-rate returns in index funds. Rolling those funds into a self-directed plan and deploying them into mortgage notes can generate significantly higher yields -- all within the same tax-advantaged wrapper the money was already in.

Traditional vs. Roth SDIRA for Notes

The choice between a Traditional and Roth SDIRA determines when you pay taxes -- and whether you pay them at all.

For note investors with a long time horizon, the Roth SDIRA is the stronger play. A portfolio of performing loans generating 8-12% yields inside a Roth compounds entirely tax-free. You never pay taxes on the income, the growth, or the withdrawals. That is as close to a free lunch as tax law offers.

The Traditional SDIRA makes sense if you need the upfront tax deduction, expect to be in a lower tax bracket in retirement, or have substantial pre-tax retirement savings that you want to deploy into notes without triggering a conversion tax event.

Step by Step: How to Buy a Note Inside an SDIRA

Buying a note through an SDIRA follows the same acquisition process as buying through an LLC, with one critical difference: the custodian is the legal buyer, not you. You direct the transaction, but the custodian executes it on behalf of your IRA.

Step 1: Choose a Self-Directed Custodian

Not all IRA custodians allow alternative assets. You need a custodian that specifically supports mortgage note investments. More on custodian selection below.

Step 2: Open and Fund the Account

Open the SDIRA and fund it through one of three methods:

• Rollover -- Transfer funds from an existing IRA or old 401(k). This is the most common path for note investors. A rollover from a Traditional 401(k) to a Traditional SDIRA is tax-free. A conversion to a Roth SDIRA triggers a taxable event on the converted amount.
• Transfer -- Move funds from one IRA custodian to another. This is a direct institution-to-institution transfer with no tax consequences.
• Contribution -- Make annual contributions up to the IRS limit ($7,000 for 2025, $8,000 if age 50+). Building a note portfolio from contributions alone is slow -- most investors combine contributions with a rollover of existing retirement savings.

Step 3: Identify the Note

Source a mortgage note through your normal deal channels -- tapes from sellers, broker relationships, industry networks. The sourcing process is identical to buying notes in your personal entity. The only thing that changes is who signs the contract.

Step 4: Submit the Purchase Documents to Your Custodian

Once you have an accepted offer, send the loan purchase sale agreement (LPSA) and any supporting documents to your custodian with a "buy direction letter" -- a written instruction telling the custodian to purchase the note on behalf of your IRA. The custodian reviews the documents, signs the LPSA in the name of the IRA (e.g., "ABC Custodian FBO [Your Name] IRA"), and wires the purchase funds from your IRA account.

Step 5: Title the Asset in the IRA's Name

The note and the mortgage assignment are titled in the name of the IRA, not your personal name and not an LLC you own. The recorded assignment will show the IRA (through the custodian) as the owner of the lien.

Step 6: Set Up Servicing

Engage a licensed loan servicing company to handle payment collection, escrow management, and borrower communication. The servicer remits all borrower payments directly to the custodian, who deposits them into your IRA. All servicing fees are paid from IRA funds -- not your personal account.

Step 7: Reinvest the Income

As payments accumulate in the IRA, reinvest them into additional notes. This is where compounding takes over. Each new note generates its own stream of payments, which fund the next acquisition, and so on.

What Types of Notes Work Best in an SDIRA

Not every note strategy fits well inside a retirement account. The IRA's structural constraints -- contribution limits, prohibited transaction rules, and the inability to easily add funds -- favor certain asset types over others.

Performing and Re-Performing Notes: The Best Fit

Performing loans and re-performing loans are the ideal SDIRA asset. They generate consistent monthly cash flow with minimal management. The servicer collects payments, the custodian receives the funds, and the IRA grows. There is no active workout, no legal fees to fund, and no emergency expenses that could drain the account.

A portfolio of performing notes inside an SDIRA functions like a private bank. Monthly principal and interest payments accumulate, and when the balance reaches a level sufficient to purchase another note, you deploy again. The cycle feeds itself.

Non-Performing Notes: Workable but Risky

Non-performing loans (NPLs) can be purchased inside an SDIRA, but they introduce complications. NPL workouts often require funding corporate advances -- property taxes, insurance, legal fees, property preservation costs -- all of which must come from the IRA. If the IRA runs low on cash to cover these expenses, you cannot simply transfer personal funds into the account beyond the annual contribution limit.

An NPL that sits in workout limbo for 18 months while consuming legal fees and property preservation costs can drain an underfunded IRA. If you pursue NPLs inside an SDIRA, maintain a substantial cash reserve within the account -- at least 20-30% of the IRA's total value -- to cover unexpected costs.

Best SDIRA Note Strategies at a Glance

Prohibited Transactions: What You Cannot Do

The IRS imposes strict rules on SDIRA transactions. Violating these rules does not result in a fine -- it results in the disqualification of your entire IRA. The full account balance becomes taxable in the year of the violation, plus a 10% early withdrawal penalty if you are under age 59 1/2. This is catastrophic. Understanding the rules is not optional.

No Self-Dealing

You cannot purchase a note from yourself, your spouse, your parents, your children, your grandchildren, or any entity controlled by any of these people. The transaction must be arm's length with an unrelated party.

This also means you cannot sell a note you personally own into your IRA, and your IRA cannot sell a note to you or your family members.

No Personal Benefit

You cannot derive any direct or indirect personal benefit from an asset held in your IRA. For note investors, the most common violation risk is using personal funds to pay an IRA expense or having the IRA pay a personal expense. Every dollar in and every dollar out must flow through the IRA's custodian account.

No Commingling

IRA funds cannot be mixed with personal funds. If the IRA owns the note, the IRA pays the expenses. You cannot cover a shortfall with a personal check and "reimburse yourself later." That is a prohibited transaction.

Disqualified Persons

The prohibited transaction rules apply to a defined list of "disqualified persons":

• You (the IRA owner)
• Your spouse
• Your lineal descendants and their spouses (children, grandchildren)
• Your lineal ascendants (parents, grandparents)
• Any entity in which you or a disqualified person holds 50% or more ownership
• Officers, directors, or highly compensated employees of such entities

You can transact with siblings, aunts, uncles, cousins, and friends. The disqualified person list is specific and defined by IRC Section 4975.

UBIT Risk and When It Applies

Unrelated Business Income Tax (UBIT) is a tax that applies to certain income earned within a tax-exempt account, including IRAs. Most mortgage note investments purchased with cash inside an SDIRA do not trigger UBIT. But there are two scenarios where it can apply:

Debt-Financed Acquisitions

If your SDIRA borrows money to purchase an asset (using a non-recourse loan), the portion of income attributable to the borrowed funds may be subject to UBIT. This is more common in real estate transactions where the IRA takes out a mortgage to buy rental property. For note investors purchasing notes with cash already in the IRA, this is generally not a concern.

Active Trade or Business

If the IRS determines that your SDIRA's activity rises to the level of an active trade or business -- for example, operating a note fund inside the IRA or engaging in frequent, high-volume trading -- the income could be classified as unrelated business taxable income. A passive portfolio of performing notes held for cash flow is unlikely to trigger this classification, but consult a tax advisor if your SDIRA activity is extensive.

The practical rule for note investors: Buy notes with cash inside the IRA, hold them for income, and you will almost certainly avoid UBIT. Introduce leverage or operate at a scale that resembles a business, and you need professional tax guidance.

Custodian Selection Tips

Your custodian is the administrative backbone of your SDIRA. Choosing the wrong one creates delays, excessive fees, and operational friction on every transaction. Here is what to evaluate:

Experience with Mortgage Notes

Not all self-directed custodians have experience processing note transactions. Some specialize in real estate, precious metals, or private equity. You want a custodian whose staff understands what an LPSA is, how an assignment of mortgage works, and how to process servicer remittances. Ask directly: "How many mortgage note transactions has your firm processed in the last 12 months?"

Fee Structure

Custodian fees vary widely and can significantly impact your net returns. Common fee categories include:

Compare the total annual cost for your expected portfolio size and transaction volume -- not just the headline account fee. A custodian with a low annual fee but high per-asset and per-transaction charges can cost more than a custodian with a higher flat fee and no per-asset charges.

Processing Speed

When you submit a buy direction letter, how long does the custodian take to review and execute? Some custodians process transactions in 24-48 hours. Others take 7-10 business days. In a competitive market, a slow custodian can cost you deals. Ask about turnaround times before you open the account.

Established Custodians to Research

Several custodians are well-known in the note investing space: Equity Trust, New Direction Trust Company, and Midland Trust are frequently used by note investors. This is not an endorsement of any specific firm -- research multiple custodians, compare fees and processing capabilities, and choose the one that fits your portfolio strategy and transaction volume.

SDIRA vs. LLC: When to Use Which

A common question from new note investors: should I buy notes in an LLC or an SDIRA? The answer is not one or the other -- they serve different purposes, and most experienced investors use both.

Use an LLC When:

• You need access to the cash flow for living expenses or reinvestment outside the IRA
• You are building a note business as your primary income source
• You want maximum operational flexibility with no custodian approval process
• You plan to scale into NPL workouts that require frequent, unpredictable expense payments

Use an SDIRA When:

• You have existing retirement savings that are underperforming in traditional investments
• You want tax-free or tax-deferred growth on note income
• You are focused on long-term wealth building, not current income
• You are purchasing performing or re-performing notes that require minimal active management

Use Both When:

• You have capital in both taxable and retirement accounts
• You want current income (LLC) and retirement growth (SDIRA) simultaneously
• You want to diversify not just your assets but your tax treatment

The SDIRA is not a replacement for a business entity. It is a complementary structure that allows retirement funds to participate in the same asset class. Notes purchased through the LLC and notes purchased through the SDIRA are separate investments, each governed by their own rules and tax treatment.

Real Numbers: The Compounding Effect

The math is what makes the SDIRA strategy compelling. Here is what tax-free compounding looks like in practice with a Roth SDIRA deployed into performing mortgage notes.

Assumptions:

• Starting balance: $100,000 (rolled over from an old 401k, converted to Roth)
• Average net yield on performing notes: 10% annually (after servicing fees and custodian costs)
• All income reinvested into additional notes
• No additional contributions

At year 20, the Roth SDIRA balance is $672,750 -- and every dollar is yours tax-free. The taxable account, earning the same gross return but losing 30% to taxes each year, reaches only $386,968. The Traditional SDIRA reaches the same $672,750 balance, but withdrawals are taxed as ordinary income -- if you are in the 24% bracket at retirement, your after-tax value is approximately $511,290.

The Roth SDIRA advantage widens further if you factor in the absence of required minimum distributions. A Traditional IRA forces you to begin withdrawals at age 73 whether you need the money or not. A Roth lets the balance continue compounding indefinitely.

Now add modest annual contributions of $7,000:

A $100,000 rollover plus $7,000 in annual contributions, deployed into performing notes at a 10% net yield, grows to over $1 million in a Roth SDIRA within 20 years -- completely tax-free. That is the power of removing tax drag from a high-yield asset class.

Getting Started

The setup process for an SDIRA note portfolio is more involved than buying through an LLC, but it is a well-established workflow. Most note sellers and loan servicers are familiar with SDIRA documentation requirements and can accommodate the structure without difficulty.

1. Research custodians that specialize in self-directed accounts and have experience with mortgage note investments
2. Open the account and initiate a rollover or transfer from existing retirement funds
3. Identify a performing loan or re-performing loan through normal deal sourcing channels
4. Direct the custodian to execute the LPSA, wire funds, and title the note in the name of the IRA
5. Set up servicing so payments flow directly to the custodian
6. Monitor and reinvest as income accumulates in the account

If you have retirement savings earning 6-7% in index funds, and you are comfortable with the note investing asset class, an SDIRA is one of the most tax-efficient ways to deploy that capital into higher-yielding, collateral-backed investments. The rules are strict, the custodian adds a layer of process, and the prohibited transaction rules demand attention. But the payoff -- decades of tax-free compounding at yields that dwarf traditional retirement investments -- is worth the administrative overhead.