Alternative Investments for Passive Income: A 2026 Investor’s Guide

Alternative investments are assets outside the traditional mix of public stocks, bonds, and cash — and a growing number of them are built specifically to produce passive income. For investors who want monthly or quarterly cash flow that doesn’t rise and fall with the stock market, income-focused alternatives like private credit (also called private debt), real estate, and mortgage note funds — a residential form of private credit — have moved from niche to mainstream. This guide explains what alternative investments are, which ones generate passive income, how the strongest funds manage risk, and how to tell a disciplined opportunity from a risky one.

What Are Alternative Investments?

Alternative investments are assets that fall outside the three traditional categories of publicly traded stocks, bonds, and cash. They include real estate, private credit (lending outside the banking system), private equity, commodities, hedge funds, collectibles, and pooled private funds such as mortgage note funds. The defining trait is that they are not bought and sold on public exchanges the way a share of a public company is.

Investors turn to alternatives for a simple reason: they often behave differently from the stock market. When public markets fall, an income-producing alternative backed by real estate or private loans may keep paying distributions on schedule. That low correlation — the tendency to move independently of stocks — is what makes alternatives a powerful diversification tool rather than just another place to park money.

Why Are Investors Moving Into Alternatives?

Investors are moving into alternatives to diversify beyond stocks and bonds, capture income that is less tied to market swings, and access return streams that were once reserved for institutions. The shift is not a fad — it reflects a structural change in how capital is allocated, and the data shows it clearly.

Private credit, the broad category that mortgage note funds belong to, has grown into one of the fastest-rising asset classes in finance. The global private credit market reached roughly $3.5 trillion in assets under management in 2025, according to the Alternative Credit Council.¹ Morgan Stanley estimated the market at about $3 trillion entering 2025 and projected it could reach $5 trillion by 2029.² Much of that growth is in asset-based finance — lending secured by real assets, including residential mortgages — which McKinsey identifies as one of the segments most likely to shift from bank balance sheets toward private lenders.³

For individual investors, the takeaway is practical. The same real-estate-backed lending that institutions are allocating billions toward is increasingly accessible through funds built for individuals. The motivations driving that demand tend to fall into four buckets:

• Diversification. Alternatives reduce a portfolio’s dependence on the performance of public stocks and bonds.
• Income. Debt-based alternatives are structured to pay regular distributions, which appeals to retirees and anyone seeking cash flow.
• Lower correlation. Returns that move independently of the market can cushion a portfolio during downturns.
• Real-asset backing. Many alternatives are secured by tangible collateral, offering a recovery path that paper assets don’t.

What Are the Main Types of Alternative Investments?

Alternative investments span a wide spectrum, from highly liquid commodities to long-locked private equity. They differ most in three ways that matter to income investors: how they generate returns, how liquid they are, and how much they correlate with the stock market. The table below compares the major categories.

The pattern is clear: investments that earn through interest and loan payments — private credit strategies — are the ones built for income. Growth-oriented alternatives like private equity, commodities, and collectibles may appreciate over time but rarely pay you along the way. Mortgage note funds don’t appear as a separate line here for a reason: they are a segment within private credit, not a separate asset class. We map exactly where they fit below.

Which Alternative Investments Generate Passive Income?

The alternative investments best suited for passive income are debt-based and real-estate-backed strategies that distribute regular payments. The three most common income producers are income real estate, private credit funds, and mortgage note funds. Each generates cash flow without requiring the investor to manage anything directly.

• Income real estate and REITs. Rental properties and real estate investment trusts pay distributions from rent. Direct ownership can mean landlord duties; REITs and real estate funds offer a more passive version.
• Private credit funds. These pool investor capital to lend to businesses or projects, distributing the interest earned. Returns are income-focused and largely uncorrelated to public stocks.
• Mortgage note funds. A specialized form of private credit, these funds invest in loans secured by real estate and pass the loan payments through to investors — combining income with hard-asset collateral.

Among these, the real-estate-backed options stand out for investors who want income and a margin of safety. A loan secured by property is backed by something tangible: if a borrower defaults, the collateral provides a path to recover value. That security is exactly what distinguishes a mortgage note fund from an unsecured lending strategy or an equity bet.

What Is a Mortgage Note Fund?

A mortgage note fund is a pooled investment vehicle that buys and holds mortgage notes — loans secured by real estate — and distributes the income they generate to investors. Rather than buying individual notes yourself, you invest in a professionally managed portfolio, and the fund handles acquisition, underwriting, servicing, and the resolution of any loans that fall behind. Among income-focused alternative investments, it offers one of the more approachable ways to earn returns secured by real estate.

This structure solves the biggest obstacle to note investing: the work. Buying notes directly requires sourcing deals, underwriting collateral, coordinating licensed servicers, and managing any defaults — effectively a part-time job. A fund turns that active process into a passive one. (If you want to understand the underlying asset first, our guide to what a mortgage note fund is covers how note funds work in detail.)

The Integrity Income Fund is one example of this model. It invests in a diversified portfolio of mortgage notes and targets 8–10% annual preferred returns, paid as monthly distributions, with a one-year minimum commitment. The goal is straightforward: give passive investors exposure to real-estate-secured income without the operational burden of managing notes themselves.

Where Do Mortgage Note Funds Fit Within Private Credit?

A mortgage note fund is a form of private credit — specifically, residential, real-estate-secured private credit. Private credit (also called private debt) is any loan that is originated or acquired outside the public markets and funded by private investors or investment funds, rather than by a bank or the public bond market. Because the loans aren’t publicly traded and are typically held until they mature or are resolved, mortgage note funds sit squarely inside this category.

Private credit isn’t a single strategy — it’s an umbrella covering many segments, distinguished mainly by who the borrower is and what secures the loan. Residential mortgage debt is one of those segments, and it’s where mortgage note funds live:

This is what distinguishes residential mortgage private credit from the corporate direct lending that dominates the headlines: every loan is secured by real property. That collateral cushion is a structural advantage over the unsecured business lending that makes up much of the private credit market — a strength, not a footnote.

It’s also worth clearing up a common misconception. Private credit includes both originating new loans (direct lending) and acquiring existing ones. Many of the largest managers buy seasoned loans rather than originate every one, and a mortgage note fund follows that same acquired-credit model — purchasing existing notes from banks, other lenders, and investors, then earning income from the payments. And to be clear, this is different from mortgage-backed securities (MBS): agency MBS are publicly traded fixed income, whereas a note fund holds privately owned whole loans, which is what makes it private credit.

For the Integrity Income Fund specifically: in these terms, it is a residential private credit fund that invests primarily in first-lien residential mortgage loans. It seeks to generate income through borrower payments, discounted note acquisitions, and disciplined asset management — while maintaining the downside protection of real estate collateral.

How Does a Well-Run Fund Manage Risk?

A well-run fund manages risk by diversifying across many assets, securing investments with collateral, underwriting conservatively, avoiding leverage, and relying on experienced professional management — not by chasing the highest possible return. For a mortgage note fund specifically, several layered protections work together to defend investor capital. Understanding these mechanisms is the best way to evaluate any income fund before investing.

1. Diversification across many notes. Spreading capital across numerous loans, borrowers, and geographies means no single default can sink the portfolio. This is the central advantage a fund holds over an individual buying one note at a time.
2. First-lien priority. Conservative funds favor first-lien notes, which are paid before any other claim if the property is sold or foreclosed. First position is the foundation of a defensible portfolio.
3. Conservative loan-to-value and discount discipline. Buying notes with meaningful equity cushions — and at a discount to the unpaid balance — creates a margin of safety. If a borrower defaults, the collateral value still protects the investment.
4. No leverage. Some funds borrow money to amplify returns — which also amplifies losses and can force asset sales at the worst possible time. A fund that invests without leverage avoids that fragility: its returns come from the loans themselves, not from borrowed money stacked on top. In a downturn, an unleveraged fund has no lender demanding repayment and no pressure to sell notes into a weak market.
5. Professional loan servicing. Licensed servicers handle compliant collections and respond quickly to delinquencies, while structured workout processes (modifications, repayment plans, or, as a last resort, foreclosure) turn problem loans into recoveries.
6. Experienced management and alignment. A track record of resolving real loans matters more than any projection. The strongest signal is a management team whose own interests are aligned with investors’.
7. Transparency and defined terms. Clear reporting, a defined preferred-return structure, and a stated commitment period let investors understand exactly how their capital is handled and what to expect.

No investment eliminates risk, and any fund can experience losses. But these mechanisms are what separate a disciplined, real-asset-backed strategy from a speculative one. When evaluating any income fund, ask how it diversifies, what lien position it holds, how it underwrites collateral, whether it uses leverage, who services the loans, and how it reports to investors. Strong answers to those questions are the clearest sign of a well-managed fund.

Who Can Invest in Alternative Investment Funds?

Eligibility for a private alternative investment fund depends on how the fund is legally offered. Some funds are open only to accredited investors, while others can accept a limited number of non-accredited but financially sophisticated investors, depending on the securities exemption the fund relies on.

An accredited investor generally meets income or net-worth thresholds defined by the U.S. Securities and Exchange Commission — for example, certain income levels in recent years, or a net worth above a set amount excluding a primary residence.⁴ Because these definitions and a fund’s specific requirements can change, the only reliable step is to review the fund’s offering documents and confirm eligibility directly before investing. Many investors also choose to invest through a self-directed IRA, which lets alternative income grow inside a tax-advantaged account.

Alternative Investing Glossary

Alternative Investment

Any asset outside traditional public stocks, bonds, and cash, including real estate, private credit, and private funds.

Private Credit (Private Debt)

Debt originated or acquired outside the public markets and funded by private investors or funds rather than banks or public bonds. “Private credit” and “private debt” mean the same thing. Mortgage note funds are a residential, real-estate-secured segment of private credit.

Direct Lending

A private credit approach in which a fund originates a new loan and funds the borrower directly, as opposed to acquiring an existing loan on the secondary market.

Asset-Based Lending

Lending secured by specific pledged assets. Residential mortgage private credit is a form of asset-based lending, secured by real property.

Mortgage-Backed Security (MBS)

A pooled, publicly traded security backed by many mortgages. Agency MBS is generally considered public fixed income — not private credit — unlike the privately owned whole loans a note fund holds.

Correlation

How closely two investments move together. Low correlation to stocks helps diversify a portfolio.

Preferred Return

A targeted rate of return that investors receive before the manager shares in profits. A target, not a guarantee.

Distribution

A payment of income made to investors, often monthly or quarterly in an income fund.

First-Lien Position

The senior claim on a property; first-lien debt is repaid before any other claim if the property is sold or foreclosed.

Loan-to-Value (LTV)

The ratio of a loan balance to the property’s value. Lower LTV means a larger equity cushion protecting the investor.

Leverage

The use of borrowed money to increase the size of an investment. Leverage magnifies both gains and losses; an unleveraged fund avoids the forced-selling risk that borrowing can create.

Liquidity

How quickly an investment can be converted to cash without a major loss in value. Most alternatives are less liquid than public stocks.

Accredited Investor

An individual or entity meeting SEC income or net-worth thresholds, eligible for certain private offerings.

Self-Directed IRA (SDIRA)

A retirement account that can hold alternative assets, allowing income to grow tax-deferred or tax-free.

Frequently Asked Questions

The Bottom Line

Alternative investments have become a core tool for investors who want income and diversification beyond the stock market — and the income-producing, real-estate-backed corner of that world is where passive cash flow lives. The strongest opportunities aren’t the ones promising the highest returns; they’re the ones with disciplined risk management: diversification, collateral, conservative underwriting, and experienced hands at the wheel. A mortgage note fund built on those principles offers a way to earn real-estate-secured income without managing a single loan yourself. As with any investment, the right move is to understand how it works, confirm you’re eligible, and review the offering details before committing capital.

Additional Resources

Keep exploring how mortgage note funds work and how they stack up against other income investments:

• What Is a Mortgage Note Fund? — a plain-English primer on the vehicle and how it generates income.
• Why Investors Like Mortgage Note Funds — the appeal for people seeking steady passive income.
• Mortgage Note Fund vs. REIT — how these two income strategies compare on risk, liquidity, and returns.
• The Advantages of a Smaller Mortgage Note Fund — why fund size can work in investors’ favor.