When financing a real estate project, one of the biggest challenges borrowers face is covering loan payments before the property begins producing income. Lenders understand this gap and often include an interest reserve as part of the loan structure. By setting aside funds specifically to pay interest during the construction phase or lease-up period, an interest reserve helps keep the loan current, reduces financial strain on the borrower, and provides added security for the lender. In this article, we’ll explain how interest reserves work and why they can be a valuable advantage for Colorado hard money lenders.

What is an Interest Reserve? 

An interest reserve is a portion of loan funds set aside by the lender at the start of a project to cover interest payments during the period when the property is not yet generating sufficient income to cover the monthly debt service. Instead of requiring the borrower to make monthly interest payments out of pocket, the lender draws some or all of the monthly payment from this reserve to keep the loan current. This structure is common in bridge and construction loans, as it smooths cash flow for borrowers and provides assurance to lenders that interest will be paid throughout the real estate development or lease-up phase.

Interest Reserve Example

Let’s assume that a person purchases a multifamily property that is only 50% leased and thus doesn’t have sufficient DSC to get a bank loan. They then contact a reputable local bridge lender, and they offer a loan of $1,000,000 to be used towards your purchase. However, in order to allow the buyer the funds to make the monthly loan payments, the lender puts $100,000 of the loan principal into an escrow account, which is designated as an “interest reserve escrow account”.

Each month for 10 months, the bridge lender pays out $10,000 from the interest reserve account to make the required loan payments. Meanwhile, the owner is actively looking for tenants to lease up the vacant space. At the end of the 10 months, the property is now 90% leased, and the income from the commercial real estate property is sufficient to make the monthly loan payments without needing to draw on the interest reserve.

How Does The Interest Reserve Help The Borrower?

Because the purchaser/borrower bought a 50% vacant property, they paid considerably less than if it had been fully leased. Now that the property is up to what lenders call a “stabilized” income, the property is not only worth considerably more to a new buyer, but it also now qualifies for a conventional bank loan.

The property owner goes to their bank and refinances the hard money loan into a conventional loan at the lower interest rates now available for stabilized properties. Without working with a flexible hard money lender who could set up an interest reserve, the owner would not have been able to acquire the property in the first place and would have lost the opportunity to create a large amount of equity in this real estate investment.

Interest reserves can have a number of advantages for borrowers, including:

• Improves cash flow: Borrowers don’t have to make all or part of the monthly interest payments out of pocket during lease-up or the construction period.
• Keeps the loan current: Lenders are assured interest will be paid on time, even before the property generates income.
• Supports project stability: Allows borrowers to focus capital on construction, renovations, or other expenses instead of servicing debt.
• Simplifies planning: Predictable interest coverage reduces surprises and makes it easier to manage budgets.
• Enables faster loan approvals: Lenders may be more comfortable funding projects with an interest reserve in place, knowing payments are secured.
• Bridges the income gap: Helps cover the period between project start and when rental, sales, or refinancing income begins.

Why Would a Borrower Need an Interest Reserve?

For a traditional real estate lender, it is always all about Debt Service Coverage (DSC). If you are looking for a bank loan on an income property, the first question the bank will ask you is, “What is the DSC ratio?”

If your loan payment on the requested bank loan will be $1,000 per month, then the bank will require that the rental income on the property, after paying all operating expenses, must be at least $1,200 per month. If it isn’t, you can kiss your bank loan goodbye.

Frequently, the best investment opportunities are found in partially leased properties or even empty properties. Obviously, these properties do not have the DSC that banks require.

A savvy investor will realize that working with a Colorado hard money lender like Montegra, which can offer an interest reserve to overcome DSC requirements and offer opportunities not found with traditional financial institutions.

Interest Reserve FAQ

Can an interest reserve be used to buy an empty building? 

Yes. Montegra recently helped one of its borrowers close the purchase on a prime retail building that had been owned by a furniture store for years, but was closed when the owners decided to retire and also sell the building. Getting a bank loan on a 100% vacant building is not a possibility.

How is an interest reserve calculated?

The size of an interest reserve is determined by factors such as the loan amount, interest rate, expected project timeline, and draw schedule. Lenders estimate how much interest will accrue before the property begins generating income and set aside that portion of funds at the beginning of the loan.

Does an interest reserve increase my loan amount?

Yes, since the reserve is funded out of the loan proceeds, it is included in the total loan balance. This means that while the borrower benefits from not making monthly interest payments during the project, the reserve itself is part of the financing package and must be repaid along with the loan.

What happens if the interest reserve runs out?

If construction takes longer than expected or interest accrues more quickly than projected, the reserve may be depleted before the project produces income. In that case, borrowers may need to cover the remaining interest payments out of pocket, request an extension, or explore refinancing options to complete the project.

Work with Montegra for Colorado Hard Money Loans

If you’re looking for a reliable financing partner, Montegra offers decades of experience providing Colorado real estate investment borrowers with flexible loans. Our interest reserve structure is just one way we help investors and developers manage cash flow and keep projects moving forward. Whether you’re acquiring, refinancing, or building, we structure loans to fit your needs and close quickly when timing matters most.

Ready to get started? Contact Montegra today to learn more about our Colorado lending solutions.