Fix and Flip Loan Term Length: Choosing 12, 18, or 24 Months (2026)
When investors compare fix and flip loans, they fixate on the rate and the points and treat the term length as an afterthought, a box that comes prefilled. That is backwards. The term is the single decision that most directly controls whether your project ends in a clean payoff or an expensive scramble, and it is one of the few loan terms you actually get to choose. Pick a term that is too short and you are paying extension fees or selling into a bad week. Pick one that is too long and you may be paying for months of runway you never use. This guide breaks down what the common twelve, eighteen, and twenty-four month terms really mean, how the choice interacts with your carrying cost, and how to size the term to the deal in front of you.
If you are still mapping out how you will get out of the loan, read our guide to fix and flip exit strategies alongside this one. The term you choose and the exit you plan are the same decision viewed from two angles.
What the term length actually is
A fix and flip loan is a short-term loan, and the term is simply the window you have to complete the project and pay the loan off, either by selling the property or refinancing into long-term financing. Most programs offer terms in the range of twelve to twenty-four months, with twelve and eighteen being the most common. Unlike a thirty-year mortgage, there is no long amortization here. You are borrowing against a project with a defined beginning and end, and the term is the lender’s estimate, and yours, of how long that project should reasonably take.
The key thing to understand is that these are usually interest-only loans, so the term does not change your monthly payment the way it would on an amortizing loan. A longer term does not lower your payment. It just gives you more time and, because you are paying interest the whole way, more total interest if you use that time. The term is about runway, not about affordability.
The twelve-month term: cheapest if you can hit it
A twelve-month term is the default for a straightforward flip: a cosmetic-to-moderate rehab in a market where houses sell quickly, run by an investor who has done it before. If your project is genuinely a three-to-five month rehab followed by a two-to-three month sale, twelve months gives you a real cushion and it is usually the least expensive option because lenders price shorter exposure a little more favorably.
The risk with twelve months is that flips almost always take longer than the plan. Permits stall, a contractor walks, the first buyer’s financing falls through. If you chose twelve months on a project that realistically needed sixteen, you are now staring at a loan extension, which typically costs a fee of a point or so and sometimes a rate bump. A twelve-month term is the right call when your rehab is light and your comps sell fast, and the wrong call when you are talking yourself into an optimistic timeline to feel good at closing.
The eighteen-month term: the honest default for real rehabs
Eighteen months is where most serious rehabs should live. A gut renovation, an addition, a project that needs permits and inspections at multiple stages, or a flip in a slower-moving market all eat time you cannot fully control. Eighteen months gives you room for the rehab to run long and for the property to sit on the market through a soft stretch without triggering an extension.
The cost of the extra six months is mostly the interest you pay if you actually use them, plus possibly a slightly higher rate than the twelve-month version. But that cost is almost always cheaper than an extension fee plus the stress of racing a deadline. For a heavier project, eighteen months is not being conservative for its own sake. It is matching the term to how the work and the sale really behave. The larger point is that your carrying cost, which we break down in our guide to fix and flip closing costs, is driven by time on the loan, so the term you pick is really a bet on how long you will carry.
The twenty-four-month term: for builds and complex projects
Twenty-four months is for projects that are genuinely long: heavy structural work, additions that change the footprint, a property that needs entitlement or zoning work before the rehab even starts, or a flip you intend to hold and season before refinancing. If your plan is to renovate and then refinance into a rental rather than sell, a longer term buys you the seasoning window, and the move is the one we describe in refinancing a flip into a DSCR loan.
The tradeoff is real. A twenty-four-month term usually prices a touch higher, and if you finish in ten months you have paid for runway you did not need, though on an interest-only loan you only pay interest for the months you are actually in the loan. For most cosmetic flips this is more term than you need. Reserve it for projects where the timeline is genuinely uncertain or long, not as a security blanket on a simple deal.
Running the cost of the term choice
Make it concrete. Say you borrow three hundred thousand dollars at eleven percent interest-only. Your interest is roughly two thousand seven hundred fifty dollars a month, or thirty-three thousand dollars over a full year. The term you choose does not change that monthly number. What it changes is your exposure to overrun. If you take a twelve-month term and the project runs to month fifteen, you are paying an extension fee, maybe three thousand dollars at a point, plus three extra months of interest at two thousand seven hundred fifty, so about eight thousand two hundred fifty in interest, on top of the anxiety of a live deadline. If you had taken eighteen months from the start, you would have paid those same three months of interest but skipped the extension fee and the scramble entirely.
Notice what this means: the term almost never saves you interest, because interest is a function of how long you actually hold the loan. What a right-sized term saves you is fees and forced decisions. That is why the smart move is to match the term to a realistic timeline with a buffer, not to the timeline you hope for. The pricing itself, and how term interacts with rate and points, is something we cover in our guide to fix and flip rates and points, and the interest math is the same one that runs through how fix and flip financing works in the first place.
The extension is the safety net, not the plan
New investors sometimes reason that they can just take the shortest, cheapest term and extend if they need to. That logic is backwards. An extension exists as a safety net for the project that slipped despite a reasonable plan, not as a substitute for choosing the right term up front. Leaning on it turns a predictable cost into a surprise one, because you only find out you need the extension when you are already against the deadline and have the least leverage to negotiate. Building the extension into your base case is a sign the term was wrong, not a clever way to save on the front end. Choose the term you actually expect to need, then treat the extension as insurance you hope not to use.
There is also a market-risk angle. A term that ends in a soft selling season forces you to either drop your price to move the property fast or pay to extend into a better window. Because you cannot perfectly predict when your rehab finishes, a term with real buffer gives you the option to wait out a bad few weeks rather than sell into them. On a flip where your entire profit is a spread of a few tens of thousands of dollars, being forced to cut ten thousand off the price to beat a deadline can erase more than a longer term ever would have cost.
How to choose your term
Start from an honest project timeline: how long the rehab really takes given its scope, plus how long properties like yours actually sit before they sell in your market, plus a buffer for the things that always go wrong. If that total lands under nine months, twelve is fine. If it lands between nine and fourteen, take eighteen. If it is genuinely long or uncertain, or you plan to refinance and hold, take twenty-four. The extra interest of a longer term is only paid if you use the time, but the extension fee of a term that was too short is paid the moment you run over. When the choice is close, err longer. The downside of extra runway is small and the downside of running out is not.
Where FMC fits
We arrange fix and flip and bridge financing for real estate investors across Pennsylvania and additional states, and we are a Pittsburgh-based brokerage placing these loans throughout our service area. When we structure your fix and flip loan, matching the term to your real timeline is part of the job, so you are not paying for runway you will not use or racing a deadline you never should have accepted. Run your purchase, rehab, and after-repair value through our deal calculator, then contact us and we will help you pick the term that fits the deal.
FMC Capital is a Pittsburgh-based mortgage brokerage, NMLS #1840537, serving real estate investors across Pennsylvania and additional states. This article is educational and is not a commitment to lend or financial advice. Loan terms, extension fees, rates, and points vary by lender, property, and borrower and are subject to change. To talk through a specific deal, call 412-990-2941.