Taxes on flipping houses: dealer status, ordinary income and self-employment tax
Investors spend weeks negotiating two points on a hard money loan and then lose a multiple of that to a tax treatment they never checked. A flip is taxed as a business, not as an investment — and the difference usually runs to a third of the profit.
The only question that really matters: dealer or investor
The tax code does not care what you call yourself. It looks at why you held the property. Real estate held primarily for sale to customers in the ordinary course of a trade or business is inventory, and the person holding it is a dealer for that property. Real estate held for investment or for use in a trade or business — a rental you keep, a lot you sit on — is a capital or section 1231 asset. Courts weigh a familiar list of factors: the frequency and number of sales, how long each property was held, how much you improved it, how actively you marketed it, and how much of your income comes from these transactions. No single factor decides it, and the answer is determined property by property: the same investor can be a dealer on the house they renovated and sold in seven months and an investor on the duplex they have rented for six years.
If you buy a house intending to renovate and resell it, you are almost certainly a dealer on that house. That is not a loophole failure; it is simply the arithmetic of the business you chose.
What the two treatments cost
| Question | Investor (held for investment, over one year) | Dealer (flip) |
|---|---|---|
| Character of the gain | Long-term capital gain | Ordinary income (inventory sale) |
| Federal rate | 0%, 15% or 20% depending on taxable income | Your ordinary bracket, up to 37% |
| Self-employment tax | No | Generally yes — 15.3% on net earnings, subject to the wage base |
| Section 1031 exchange | Available | Not available — property held primarily for sale is excluded |
| Depreciation | Yes, on the rented improvement | No — inventory is not depreciated |
| Installment-sale reporting | Generally available | Generally not available on dealer property |
| Net investment income tax (3.8%) | Often applies | Generally not, on income from a business you materially participate in |
Read that table twice before you argue about a fourth origination point.
Self-employment tax, the line first-time flippers miss
Because a flip is a trade or business, the profit is not just taxed at ordinary rates — it also carries self-employment tax: 12.4% for Social Security, up to an annual wage base that is indexed each year, plus 2.9% for Medicare with no ceiling, for a headline 15.3%. Two adjustments soften it slightly: the tax applies to 92.35% of net earnings, and one half of what you pay is deductible against income tax. W-2 wages you earned elsewhere in the same year count first against the Social Security wage base, so a flipper with a day job may owe only the Medicare portion on the flip.
A worked example (illustrative)
Take the project in our fix-and-flip financing guide: roughly $46,000 of gross profit after purchase, rehab, points, interest, carrying and selling costs. Assume a filer in the 22% bracket with no other business income.
- Net earnings subject to SE tax: $46,000 × 92.35% ≈ $42,480.
- Self-employment tax at 15.3% ≈ $6,500.
- Deduction for one half of it: about $3,250, leaving roughly $42,750 of taxable income from the deal.
- Federal income tax at 22% ≈ $9,400.
- Federal total ≈ $15,900, close to 35% of the gross profit — before any state income tax.
The same $46,000 as a long-term capital gain on a property held for years would carry roughly $6,900 at a 15% rate and no self-employment tax. The gap is the price of the flip business model, and it belongs in the deal analysis from the first offer, not in April. Rates and brackets change; treat these figures as an order of magnitude and run your own numbers with a CPA.
Costs you deduct now, costs that ride in the basis
For a dealer, the house is inventory, and most of what you spend on it is capitalized into its cost rather than deducted in the year of payment — purchase price, rehab labor and materials, permits, and typically the loan points, interest and carrying costs attributable to the project. Nothing is lost: those costs reduce the gain when the house sells. But they generally do not shelter other income in the year you spend them, which is why a flipper who bought in October and sells in April can face a tax year with big outflows and no deduction. Ordinary overhead that is not tied to a specific property — software, mileage between projects, professional fees, marketing — is usually deducted as it is incurred. The boundary between the two is exactly the sort of thing a CPA earns their fee on.
Three shelters that do not apply to a flip
- The 1031 exchange. Since 2018 it covers real property held for use in a trade or business or for investment, explicitly other than property held primarily for sale. A flip is the textbook exclusion.
- The home-sale exclusion. Excluding gain on a principal residence requires owning and living in the house for periods measured in years, not a live-in renovation you list as soon as the kitchen is finished.
- Long-term capital gain by waiting. Holding a flip for 366 days does not convert dealer inventory into a capital asset. Intent and activity drive the character, not the calendar.
Decisions worth making before the first closing
- Estimated payments. Business income has no withholding. Flippers generally owe quarterly estimated tax, and underpayment penalties apply even when the return is filed on time. A common discipline: move a third of the projected profit to a separate account at closing.
- Entity. Most investors title flips in an LLC for liability and lender reasons — see borrowing in an LLC. A single-member LLC changes nothing about the tax; an S-corporation election can change how much of the profit carries self-employment tax, at the cost of payroll, a reasonable salary and real administrative work. It is a volume decision, not a first-deal decision.
- Contractors and Forms 1099. Paying unincorporated trades above the annual threshold generally triggers an information return. Collect a Form W-9 before the first check, not in January.
- Records per property. Track every dollar by address. Inventory accounting falls apart when three projects share one bank account and one credit card.
The state and local layer
Federal tax is only part of it. State income tax applies in most states and can add several points; a handful levy business or gross-receipts taxes that reach flipping income; and the transaction itself carries transfer and recording taxes that vary enormously — a few hundred dollars in one state, several thousand on the same sale price in another. Those closing-side costs are summarized on our state mortgage laws pages. Some states and cities also require a contractor license for work you might assume you can do yourself, and a few have discussed speculation or anti-flipping surtaxes; check locally before you assume.
Claude Loan is an information site — not a CPA, tax preparer, law firm or lender. This guide describes how the rules are generally structured so you can ask better questions; the application to your situation is a matter for a licensed tax professional.
Frequently asked questions
Do I pay capital gains tax on a house flip?
Usually not. If the property was held primarily for resale, the profit is ordinary income taxed at your regular bracket and generally subject to self-employment tax. Capital gain treatment is for property genuinely held for investment.
Can I avoid the tax with a 1031 exchange into the next flip?
No. Section 1031 excludes real property held primarily for sale, which is the definition of a flip. Exchanges are a tool for rentals and other held property, which is one reason some investors convert a project into a rental — see our guide on refinancing a BRRRR project.
Does an LLC lower the tax on flipping?
Not on its own. A single-member LLC is disregarded for federal tax purposes and reports on the same schedules. What can change the self-employment tax picture is an S-corporation election, and it only makes sense at enough volume to justify running payroll.
What if the flip loses money?
A dealer’s loss on inventory is generally an ordinary loss, which can offset other ordinary income — a rare consolation of dealer status, since capital losses are far more restricted. Document the project carefully; loss years attract questions.
When do I actually have to pay?
The gain lands in the tax year the sale closes, and quarterly estimated payments are generally due during that year rather than at filing. If a flip closes in June, the money is usually owed in the following quarter, not the following April.
Sources
Related: Fix-and-flip financing: structuring the loan around the project, Borrowing in an LLC: entity vesting, personal guarantees and what it really protects, BRRRR: refinancing a hard money rehab into a conventional or DSCR loan, Hard money exit strategies: sell, refinance, or hold — and the plan B. Hub: Hard money.