A landlord collecting $8,000 a month in rent pays zero self-employment tax on that income. A flipper who nets $80,000 on a rehab pays 15.3% in SE tax plus ordinary income rates. Same industry. Same dollar amounts. Completely different tax treatment. I walk clients through this distinction every week because it determines which entity structure makes sense, which deductions apply, and how much you actually keep.
The Two Types of Real Estate Income
The IRS does not see "real estate income." It sees two fundamentally different categories, and it taxes them under different rules. The distinction comes down to one question: are you holding the property or selling it?
If you buy a property, rent it out, and collect monthly income, that is passive rental income. It flows through Schedule E on your personal return. It is not subject to self-employment tax under IRC Section 1402(a)(1). When you eventually sell, the gain is taxed at capital gains rates (0%, 15%, or 20% depending on your income).
If you buy a property, renovate it, and sell it for profit, that is dealer income (also called ordinary business income). It flows through Schedule C. It is subject to self-employment tax at 15.3%. The profit is taxed at ordinary income rates, not capital gains rates. And you cannot use a 1031 exchange to defer the gain, because dealer property is explicitly excluded from 1031 treatment.
The gap between those two columns is enormous. On $100,000 in profit, the rental investor pays zero SE tax and gets long-term capital gains treatment when they sell. The flipper pays $15,300 in SE tax and ordinary income rates on the entire profit. Over a career with multiple transactions, the difference runs into the hundreds of thousands.
How Rental Income Is Taxed
Rental income is the simpler of the two. You collect rent. You subtract your expenses (mortgage interest, property taxes, insurance, repairs, management fees, depreciation). The net income flows to Schedule E and gets added to your personal income on your 1040. You pay federal and state income tax at your marginal rates, but you do not pay self-employment tax.
The self-employment tax exclusion is not a loophole or a planning strategy. It is a specific statutory exclusion under IRC 1402(a)(1). Rental income from real estate is excluded from the definition of "net earnings from self-employment." How your LLC allocates profit and loss among members is governed by your operating agreement, which is also where you document the entity's tax election. I covered this in detail on my LLC vs. S-Corp page because it is the reason S-Corp elections are pointless for landlords.
Notice the last column. Zero self-employment tax. That $38,000 in net rental income is taxed at your marginal federal rate (22% in this example) plus Illinois's flat 4.95%, but the 15.3% SE tax does not apply. On this example, that saves $5,814 compared to active business income.
There is one additional tax to watch for. If your modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly), the 3.8% Net Investment Income Tax (NIIT) under IRC 1411 applies to your rental income. This is not self-employment tax. It is a separate Medicare surtax on investment income that came in with the Affordable Care Act. Most of my clients in the three-to-five property range are below the threshold, but once your portfolio scales up, it becomes relevant.
How Fix-and-Flip Income Is Taxed
I spend more time explaining flip taxes than any other topic in my practice. A flipper who buys a distressed property, renovates it, and sells it at a profit is not an "investor" in the eyes of the IRS. The IRS classifies that person as a dealer. The property is "inventory," not a "capital asset." And the profit is ordinary income, not capital gain.
The tax consequences of dealer status are severe. The profit is reported on Schedule C. It is subject to the full 15.3% self-employment tax (12.4% Social Security up to the wage base, plus 2.9% Medicare with no cap). It is taxed at ordinary income rates, which can reach 37% federally. And the property cannot qualify for a 1031 exchange, because IRC Section 1031(a)(1) explicitly requires the property to be "held for productive use in a trade or business or for investment." Dealer property is held for sale to customers, which is neither.
On an $80,000 flip profit for a single filer in the 24% bracket, the math looks like this: $19,200 in federal income tax, $3,960 in Illinois income tax, and $12,240 in self-employment tax. Total: $35,400. That is 44.25% of the profit going to taxes. The same $80,000 as long-term capital gain for an investor would have been taxed at roughly 15% federal plus 4.95% state, or about $15,960. The dealer classification costs $19,440 more in taxes on the same dollar amount.
The Dealer vs. Investor Test
The IRS does not have a bright-line rule for when you cross from "investor" to "dealer." Courts have developed a multi-factor test over decades of litigation, and the factors vary by circuit. In the Seventh Circuit (which covers Illinois), the key factors come from case law going back to Biedenharn Realty Co. v. United States and subsequent decisions.
The factor that carries the most weight in practice is frequency and continuity of sales. A landlord who sells one property every few years after renting it for a decade is clearly an investor. A person who buys, rehabs, and sells four houses in a single year is almost certainly a dealer. The gray area is the person who does two flips a year while holding a rental portfolio. I've seen the IRS go after those hybrid investors, and the outcome depends heavily on how the returns were filed and how the properties were held.
One strategy I use with clients who do both is holding the rental properties in one LLC and the flip properties in a separate entity. The IRS can still look through the entities to your overall activity, but having separate books, separate bank accounts, and separate returns makes it harder for the IRS to argue that all of your properties are dealer inventory. It is not bulletproof, but it demonstrates intent, and intent is what the factors are measuring.
Tax Brackets for Real Estate Income
Knowing your bracket matters because it determines how much of your rental net income or flip profit you actually keep. Illinois has a flat 4.95% state income tax, which simplifies the state side. The federal side is progressive.
Most of the landlords I work with in the DuPage and Cook County area have combined household income (W-2 plus rental) landing in the 22% or 24% bracket. Add the Illinois 4.95% flat rate, and your effective marginal rate on rental income is roughly 27% to 29%. For a flipper in the same bracket who also owes the 15.3% SE tax, the effective rate jumps to 42% to 44%.
One detail that catches people off guard: your real estate income stacks on top of your W-2 income. If you earn $85,000 from your day job, you're already in the 22% bracket. Your first dollar of rental income or flip profit starts at 22%, and additional income pushes you into higher brackets. I've had clients shocked by a tax bill on a $120,000 flip profit because they forgot it was being taxed on top of their $90,000 salary, pushing a significant chunk into the 32% bracket.
Property Management Expenses and Net Operating Income
Every dollar you can legitimately deduct from your gross rental income reduces your taxable income dollar-for-dollar. Your CPA handles the return, but you need to understand what counts because you are the one tracking expenses and keeping receipts throughout the year.
Two items from that grid trip up landlords regularly. The first is the repair vs. improvement distinction. Replacing a broken faucet is a repair, deductible in full the year you pay for it. Replacing every fixture in a bathroom during a remodel is an improvement, capitalized and depreciated over 27.5 years. The IRS issued extensive guidance in the tangible property regulations (Treas. Reg. 1.263(a)-3), and the test comes down to whether the work adapts, betters, or restores a "unit of property." Your CPA needs the detail on what was done, not just the total dollar amount on the invoice.
The second is the $750,000 mortgage interest cap. That cap applies to your personal residence. It does not apply to investment property. Mortgage interest on rental property held in your LLC is fully deductible against rental income on Schedule E with no cap. Same with property taxes: the $10,000 SALT deduction cap does not apply to investment properties. I've had clients leave thousands in deductions on the table because they assumed the personal residence limits applied to their rentals. They do not.
Unpaid Rent: Cash vs. Accrual Basis
A tenant owes you $2,000 for March. March passes. April passes. You never collect. Do you owe income tax on that $2,000?
The answer depends on your accounting method, and almost every individual landlord I work with uses the cash method.
Under the cash method, you report rental income when you actually receive it. If the tenant never pays, you never report the income, and you owe no tax on it. You do not need to take a bad debt deduction because you never included the amount in income in the first place.
Under the accrual method, you report rental income when it is earned, regardless of when (or whether) you collect it. March's rent is March income even if the check never arrives. If the tenant ultimately doesn't pay, you take a bad debt deduction under IRC Section 166 to offset the income you already reported. This creates extra paperwork and timing headaches.
The cash method is almost always better for individual landlords. If you use a property management company, check which method they report on your 1099. Some management companies report on accrual basis, which can create a mismatch with your personal cash-basis reporting. I've seen this cause problems during audits when the 1099 from the management company shows income the landlord never received.
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1099-S, FIRPTA, and LLC Sales
When you sell real estate through an LLC, two federal reporting forms come into play that individual homeowners rarely think about. If you are flipping through an LLC, you will deal with both of these on every transaction.
Form 1099-S: Proceeds from Real Estate Transactions
The title company or closing attorney is required to file Form 1099-S reporting the gross proceeds of every real estate sale. This form goes to the IRS. It reports the sale price, the date, and the seller's taxpayer identification number. For an LLC sale, the TIN reported is the LLC's EIN, not your Social Security number.
The IRS matches every 1099-S against filed returns. If the 1099-S shows your LLC sold a property for $340,000 and your tax return doesn't report a corresponding sale, the IRS sends an automatic notice. This is not a maybe. It is an automated matching program. Flippers who sell multiple properties per year through LLCs generate multiple 1099-S forms, and every one of them must tie to the return.
FIRPTA: Foreign Investment in Real Property Tax Act
FIRPTA requires a 15% withholding on the gross sale price when a foreign person or foreign-owned entity sells U.S. real property. This trips up domestic investors when an LLC has a foreign member, even a minority member. If a Canadian investor owns 10% of your LLC and the LLC sells a $500,000 property, the title company is required to withhold $75,000 (15% of gross) and remit it to the IRS. The withholding applies to the gross price, not the profit.
I've seen this derail closings where nobody realized a member of the LLC was a foreign national. The buyer's attorney raises the FIRPTA question at the closing table, and suddenly $75,000 that was supposed to pay off the mortgage is being sent to the IRS instead. The FIRPTA withholding can be reduced or eliminated by filing IRS Form 8288-B for a withholding certificate before closing, but that takes 90 days and requires advance planning.
FINCEN and the Fix-and-Flip Enforcement Pipeline
The Corporate Transparency Act (CTA) requires most LLCs to file Beneficial Ownership Information (BOI) reports with FINCEN (the Financial Crimes Enforcement Network). The reporting requirement has been through a series of legal challenges, but the federal government's intent is clear: they want to know who is behind every LLC in the country.
For landlords holding rental property, BOI reporting is one more compliance requirement alongside maintaining a registered agent and filing annual reports, but it is not a tax risk, because you are already reporting rental income on Schedule E. For flippers, the calculus is different. A flipper who sells three properties through three separate LLCs and underreports the profits is now visible to the federal government in a way they weren't before. The IRS can match 1099-S filings (which report the LLC's EIN and sale price) against BOI records (which identify the human behind the LLC's EIN) and cross-reference both against the individual's personal tax return.
I'm not saying every flipper is evading taxes. Most aren't. But the federal government built this infrastructure because enough of them were, and the combination of CTA beneficial ownership data plus existing 1099-S reporting creates an automated enforcement pipeline that did not exist five years ago. If you are flipping properties through LLCs, your returns need to be airtight.
1031 Exchanges: Deferring the Capital Gain
A 1031 exchange lets you sell an investment property and reinvest the proceeds into a "like-kind" replacement property without paying capital gains tax on the sale. The gain is deferred, not eliminated. You will owe tax when you eventually sell the replacement property (unless you do another 1031 exchange, and so on).
The critical rule that connects back to everything on this page: dealer property does not qualify for a 1031 exchange. IRC Section 1031(a)(1) requires the property to be "held for productive use in a trade or business or for investment." Property held primarily for sale to customers (which is the IRS definition of dealer property) is explicitly excluded. If the IRS classifies you as a dealer, your flip properties cannot be exchanged tax-free. The gain is taxable at ordinary rates plus SE tax in the year of sale, with no deferral available.
For rental property investors, 1031 exchanges are one of the most powerful tax planning tools in real estate. You can sell a $400,000 rental with $150,000 in gain, roll it into a $600,000 replacement property, and defer the entire $150,000 gain. You have 45 days from closing to identify replacement properties and 180 days to close. I've walked clients through the mechanics of this dozens of times, and I cover the full process, the deadlines, and the common mistakes in my 1031 exchange guide.
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Frequently Asked Questions
Further Reading
External resources: IRC Section 1402 (Self-Employment Tax) · IRC Section 1031 (Like-Kind Exchanges) · IRC Section 1411 (Net Investment Income Tax) · FINCEN: Beneficial Ownership Information
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