Short version: the down payment is the cash number every new flipper plans for, and the reserve requirement is the one that surprises them at underwriting. On top of the money you bring to close, most fix and flip lenders want to see that you have additional liquid cash sitting in reserve, enough to carry the loan and cover surprises while the house produces no income. Reserves are not a fee and you do not spend them at closing. They are proof you can survive the project. Not planning for them is how a funded-looking deal falls apart the week before closing.
What reserves are, and what they are not
Reserves are liquid funds you can document, usually in a bank or brokerage account, that stay yours. The lender is not collecting them, escrowing them, or applying them to the loan. They just want to verify the money exists, because it tells them you can make payments and handle cost overruns without the project stalling. Think of reserves as the lender checking that you have a cushion, not charging you for one.
This is different from your down payment, which you actually hand over at closing, and different from closing costs, which you spend to get the loan. Reserves sit in the background as proof of staying power. On a fix and flip that distinction matters more than on a rental, because a flip has no rent coming in to cover the monthly payment while you renovate.
Why flips need reserves more than rentals do
A rental produces income the day it is leased, so the property helps carry itself. A flip produces nothing until it sells. Every month of the project you are paying interest, property taxes, insurance, and utilities out of pocket with zero offsetting income. Those are your holding costs, and they are exactly what reserves are meant to cover. We broke down how much that carry really runs in our post on fix and flip holding costs, and the number is usually higher than new flippers expect.
On top of the predictable carry, there is the unpredictable part. You open a wall and find knob-and-tube wiring. The inspection flags a roof you thought had five years left. A permit takes three extra weeks. Reserves are the money that keeps the project moving when reality costs more than the spreadsheet said. That is also why lenders like to see them, because a borrower with a cushion finishes the deal instead of running out of cash halfway through the rehab.
How much do lenders actually want?
There is no single rule, but the common pattern across the asset-based lenders we broker to is reserves measured in months of the loan payment, often somewhere in the range of three to six months of principal, interest, taxes, and insurance. Stronger, more experienced borrowers on conservative deals sometimes see lighter requirements. Thinner files, bigger rehabs, and longer expected timelines push the requirement up. In competitive, high-volume markets like Texas, where we finance flips through our guide to fix and flip loans in Texas, lenders often want to see a healthy cushion because deals move fast and mistakes are expensive.
The reserve requirement also scales with how much of the interest cost is already handled. If the loan is structured with an interest reserve built in, meaning prepaid interest set aside to cover the monthly payments, your separate liquid-reserve requirement may be lighter, because part of the carry is already funded. We explained that mechanism in our post on fix and flip loan interest reserves.
A real numbers example
Run a typical deal. Purchase price of two hundred thousand dollars, a rehab budget of sixty thousand dollars, and an after repair value of three hundred fifty thousand dollars. Say the lender funds ninety percent of the purchase and one hundred percent of the rehab, so you bring twenty thousand dollars of the purchase plus closing costs at the table. That is your down payment and cash to close.
Now the reserve. Assume the monthly payment on the loan, principal or interest plus escrowed taxes and insurance, runs about two thousand two hundred dollars. A four-month reserve requirement means the lender wants to see roughly eight thousand eight hundred dollars in liquid funds beyond your cash to close. You are not spending it, but it has to be there and documented. So the real cash picture on this deal is not just the twenty thousand plus closing costs. It is that amount plus nearly nine thousand dollars of verified reserves sitting in your account. Investors who plan only for the down payment come up short at exactly the wrong moment. You can model the full cash requirement on our deal calculator before you write the offer.
Reserves and your total cost of capital
Reserves do not cost you anything directly, but they tie up capital you could otherwise deploy into another deal, which is a real cost when you are trying to scale. That is one more reason to shop the whole cost of the loan, not just the rate, because the rate, the points, and the reserve requirement together decide how much of your cash a single project consumes. We laid out how rate and points interact in our guide to fix and flip loan rates and points, and how much cash the down payment side really takes in our post on the fix and flip loan down payment.
How to be ready
Three practical moves. First, ask about the reserve requirement on the first call, so you know the full cash number before you commit to a deal, not after. Second, keep the reserve liquid and seasoned, in an account you can document, rather than tied up in another project or a retirement account the lender will not count. Third, size your reserve to the deal, not the minimum, because a bigger rehab or a slower resale market means a longer hold and more months of carry to cover. The cushion is not wasted money, it is the thing that lets you finish the deal you started.
The bottom line
The down payment gets you to the closing table. Reserves keep you at the project until it sells. Most fix and flip lenders want to see several months of payments in liquid, documented funds on top of your cash to close, and that requirement grows with the size of the rehab and the length of the expected hold. Plan for both numbers from the start, keep the reserve liquid, and you will never be the borrower who got approved on paper and then could not actually carry the deal.
Want a straight answer on the full cash a specific deal will require, reserves included? Send us the numbers. Call or text 412-990-2941, reach out through our contact page, or read more about our fix and flip and bridge loan options.
FMC Capital is a Pittsburgh-based mortgage brokerage serving real estate investors across Pennsylvania and additional states. Reserve requirements, leverage, and pricing vary by lender, property, market, and borrower profile and are subject to change. This is general educational information, not a loan commitment or financial advice. NMLS #1840537.