How is Income from Real Estate Debt Taxed? A Plain-English Explanation

Income from Real Estate Debt Is Taxed as Ordinary Income, Not Capital Gains

Interest income earned through real estate debt investments is taxed as ordinary income at your marginal federal rate, not at the preferential long-term capital gains rate of 0%, 15%, or 20%. For accredited investors in the top federal bracket, that means interest income carries a 37% federal rate plus applicable state taxes, compared to a maximum 20% rate on qualified capital gains. Understanding this distinction is the starting point for building a tax-efficient position in real estate debt.

This guide breaks down exactly how real estate debt income is classified, what deductions apply, and which account structures let you legally reduce or defer the tax burden on that income stream.

What Counts as Real Estate Debt Income

When you invest in real estate loans, whether through a platform like Finresi, a mortgage REIT, or direct private lending, the income you receive takes several forms. Each is treated differently by the IRS.

• Interest income: The core return on any loan you fund. Taxed as ordinary income in the year it is received or credited to your account, regardless of whether you withdraw it.
• Origination fee income: If you receive a share of origination points, those are also ordinary income, typically reported on a 1099-INT or 1099-MISC.
• Discount income: Purchasing a loan at a discount to face value creates original issue discount (OID) income, which accrues annually and is taxable even before you receive cash.
• Capital gain on loan sale: If a platform allows secondary market trading and you sell a loan position at a profit, that gain can qualify as a short- or long-term capital gain depending on your holding period. This is the exception, not the rule, in most real estate debt investing structures.

Finresi investors receive a Form 1099-INT for interest earned during the tax year. Keeping that document organized alongside your cost basis records is the first practical step toward accurate filing.

How Ordinary Income Tax Rates Apply in Practice

The federal income tax brackets in 2026 are indexed for inflation, and for most accredited investors, real estate debt interest lands in the 32%–37% bracket. Add a 3.8% net investment income tax (NIIT) on investment income above the $200,000 (single) or $250,000 (married filing jointly) MAGI threshold, and the effective federal rate on interest income can reach 40.8% before state taxes.

Compare that to the treatment of long-term equity returns:

The rate differential is significant, but it does not mean real estate debt is a poor choice. Yields on private real estate loans regularly run well above comparable fixed-income alternatives. The question is how to position that income to minimize friction.

The Self-Directed IRA Strategy for Real Estate Debt

Placing real estate debt investments inside a self-directed IRA (SDIRA) is the most powerful structural tool available for tax-efficient passive income from loans. The mechanism is straightforward: the IRA, not you personally, is the investor of record. Interest income flows into the IRA without triggering a current-year tax event.

Two SDIRA structures apply here:

• Traditional SDIRA: Contributions are pre-tax, growth is tax-deferred, and distributions in retirement are taxed as ordinary income. This structure is most valuable if you expect to be in a lower bracket at withdrawal than you are today.
• Roth SDIRA: Contributions are after-tax, but all growth and qualified distributions are tax-free. For a high-yield real estate debt portfolio compounding over 10–20 years, the Roth structure produces significant tax-free wealth accumulation.

There are critical rules to observe. The SDIRA must be administered by an IRS-approved custodian familiar with alternative assets. All transactions must avoid prohibited transaction rules under IRC Section 4975, which bars self-dealing between the IRA and disqualified persons (you, your spouse, lineal descendants, and certain business entities you control). The IRA funds the loan, receives the interest, and holds the collateral interest. You do not touch the funds until distribution.

One tax complication specific to SDIRAs investing in debt: Unrelated Business Taxable Income (UBTI). If the SDIRA uses leverage (a mortgage) to fund the loan investment, income attributable to the leveraged portion becomes UBTI, taxable at trust rates even inside a tax-advantaged account. Most private real estate debt platforms, including Finresi, structure individual loan investments without internal leverage at the IRA level, which keeps UBTI risk low. Confirm this with both the platform and your custodian before investing.

Deductions That Offset Real Estate Debt Income

Even outside a tax-advantaged account, several deductions legitimately reduce the net tax impact of real estate debt income.

• Investment interest expense: If you borrow personally to fund an investment (a margin loan, for example), the interest you pay is deductible against net investment income up to the amount of your investment income. Any excess carries forward indefinitely.
• Investment advisory and platform fees: Under current tax law post-Tax Cuts and Jobs Act (TCJA), miscellaneous itemized deductions for investment expenses are suspended through 2025. As of 2026, monitor whether Congress restores these deductions. Many provisions of the TCJA were subject to legislative renewal, and the treatment of investment expenses may shift.
• Bad debt deductions: If a loan you funded defaults and you receive less than the outstanding principal, the unrecovered principal may be deductible as a nonbusiness bad debt, which the IRS treats as a short-term capital loss. This loss offsets capital gains first, then up to $3,000 of ordinary income per year, with excess carried forward.
• Entity-level structuring: Some high-volume private lenders operate through an LLC or S-corp to aggregate income and expenses. This strategy requires careful analysis by a CPA because active lending income can trigger self-employment tax, converting a passive income stream into something more costly. Passive investors in a lending platform generally do not face this issue.

Comparing Real Estate Debt to Other Passive Income Investments on an After-Tax Basis

Gross yield comparisons between asset classes are misleading without an after-tax lens. Consider an accredited investor in the 37% federal bracket with a 5% state income tax rate and NIIT exposure:

The Roth SDIRA scenario for real estate debt produces the highest after-tax yield by a wide margin. Even in a taxable account, private real estate debt at 10% gross delivers nearly double the after-tax income of an investment-grade bond at half the gross yield.

Practical Steps for Tax-Efficient Real Estate Debt Investing

1. Open a Roth or Traditional SDIRA first. Work with a custodian experienced in alternative assets. Fund it before placing your first private loan investment, since moving assets into an IRA after the fact is not permitted.
2. Coordinate with a CPA who understands alternative investments. Real estate debt reporting involves 1099-INT forms, potential OID calculations, and UBTI monitoring. A generalist preparer may miss these nuances.
3. Use taxable accounts strategically. Place lower-yield, shorter-duration loans in taxable accounts where interest income is modest. Reserve higher-yield, longer-duration positions for your SDIRA to maximize the compounding benefit of tax deferral or tax exemption.
4. Track bad debt write-offs. If any funded loan goes to default, document the loss immediately and report it in the correct tax year. Capital loss carryforwards are valuable assets.
5. Review tax law annually. TCJA provisions are in active legislative discussion in 2026. Changes to investment expense deductions, NIIT thresholds, or pass-through rules can materially affect your after-tax position.

Real Estate Debt Tax FAQ

Is interest from private real estate loans subject to the net investment income tax?

Yes. Interest income qualifies as net investment income under IRC Section 1411. Investors with modified adjusted gross income above $200,000 (single) or $250,000 (married filing jointly) pay an additional 3.8% NIIT on top of their ordinary income rate on this interest.

Can I use a self-directed IRA to invest in real estate debt through Finresi?

Yes. Finresi accepts investments from self-directed IRAs. You must establish the SDIRA with a qualified custodian, and the custodian funds the investment on behalf of the IRA. All interest income flows back to the IRA account, sheltered from current taxation in a traditional SDIRA or permanently in a Roth SDIRA.

What happens to my tax liability if a loan I funded defaults?

Unrecovered principal on a defaulted loan is treated as a nonbusiness bad debt, which the IRS classifies as a short-term capital loss. You can use that loss to offset capital gains in the same year, and up to $3,000 of remaining loss can offset ordinary income annually, with the balance carried forward to future years.

Does investing in real estate debt generate passive income or active income?

For most accredited investors investing through a platform like Finresi, the income is passive investment income, not active or self-employment income. You are a lender, not a material participant in business operations. This means no self-employment tax applies, but it also means passive activity loss rules may limit your ability to offset this income with losses from other passive activities.

Is there a tax advantage to holding real estate debt inside a 401(k) versus a Roth IRA?

Both shelter interest income from current taxation, but the mechanism differs. A traditional 401(k) defers tax until withdrawal, so you pay ordinary income rates at distribution. A Roth IRA grows tax-free, making it superior for high-yield assets compounding over a long horizon. If your plan allows a Roth 401(k) or you can do a mega backdoor Roth conversion, that structure captures the best of both: higher contribution limits than a Roth IRA and tax-free growth on real estate debt income.