Interest-Only Loans for Investment Properties

How Interest-Only Loans Work

With an interest-only (IO) loan, your monthly payment covers only the interest on the borrowed amount for a specified period, typically 5 to 10 years. No principal is paid during this period, so your loan balance does not decrease. After the interest-only period ends, the loan converts to a fully amortizing payment (principal plus interest) for the remaining term.

On a $200,000 loan at 7% interest, the interest-only payment is $1,167 per month. The fully amortizing payment on a 30-year term would be $1,331 per month. That $164 monthly difference represents $1,968 per year in additional cash flow during the IO period. On a property generating $200 to $300 per month in cash flow with a standard amortizing loan, the IO option can nearly double your monthly returns.

Interest-only terms are available on DSCR loans, portfolio loans, commercial loans, and some adjustable-rate conventional products. They are not available on standard 30-year fixed conventional investment property mortgages.

When Interest-Only Makes Strategic Sense

Short to medium-term holds. If you plan to sell or refinance within 3 to 7 years, principal paydown provides minimal benefit. You are paying extra each month to reduce a balance you will pay off through sale or refinance. Interest-only payments maximize your cash flow during the hold period.

Value-add properties. Properties undergoing renovation or repositioning may produce below-market income during the improvement phase. Interest-only payments keep your carrying costs low while you complete upgrades and stabilize rents. Once the property is stabilized at higher rents, you can refinance into permanent amortizing financing.

Cash flow maximization. In tight cash flow markets where the spread between rent and expenses is thin, an IO loan can be the difference between positive and negative monthly cash flow. This is especially relevant in higher-priced markets where property values are strong but rental yields are modest.

Portfolio growth phase. During the early years of building a portfolio, maximizing cash flow from each property gives you more capital to reinvest. The principal paydown on a $200,000 loan in the first 5 years is only about $15,000 anyway (most of your payment goes to interest in the early years of a 30-year mortgage). The IO option lets you redirect that $164 per month toward reserves, repairs, or down payments on additional properties.

The Costs and Risks

No equity buildup from payments. Your loan balance stays flat during the interest-only period. Any equity growth comes solely from property appreciation. If values stagnate or decline, you remain at the same LTV where you started.

Payment shock at conversion. When the IO period ends, your payment increases, sometimes substantially. A $200,000 loan at 7% with a 10-year IO period will jump from $1,167 to $1,551 per month when it converts to a 20-year amortizing schedule (the remaining term after the IO period). That is a 33% payment increase. If rents have not increased proportionally, the property may become cash flow negative.

Higher total interest cost. Because you are not reducing the principal, you pay interest on the full balance for the entire IO period. Over a 10-year IO term on a $200,000 loan at 7%, you pay approximately $140,000 in total interest. With an amortizing loan, you would pay approximately $126,000 in interest over the same period. The $14,000 difference is the cost of the improved cash flow.

Refinancing dependency. Most investors using IO loans plan to refinance before the IO period ends. If interest rates have risen or the property has not appreciated as expected, refinancing may not be available on favorable terms. You could be stuck with the higher amortizing payment or forced to sell.

Evaluating the Decision

Run two scenarios for every deal: one with interest-only and one with full amortization. Compare cash-on-cash returns, total profit at your planned exit, and the breakeven point if you hold longer than expected. If the IO scenario produces meaningfully better returns during your target hold period and you have a clear exit strategy, the IO option is worth pursuing.

Pair interest-only loans with disciplined reserve building. Since you are not paying down the balance, set aside a portion of the extra cash flow each month as a hedge against payment shock or a down market. Treating 30% to 50% of the cash flow difference as a mandatory reserve contribution gives you a safety net.

For general tips on getting approved for investment property financing, see Tips for Getting Approved for an Investment Property Mortgage.