Interest-only period

A newly acquired business is frequently at its most fragile in the first stretch after closing — the new owner is still learning the operation, and any transition friction with staff, suppliers or customers tends to show up early. An interest-only period is a way of easing the debt burden through exactly that window, deferring principal repayment until the business has stabilized under new ownership.

Where it commonly appears

• Vendor take-back notes, where a seller extends interest-only terms for a set stretch to help the buyer through the transition
• Mezzanine or subordinated financing, which is often structured as interest-only for some or all of its life to reduce the total debt service the senior lender has to underwrite around
• Bridge arrangements used while permanent financing is still being arranged

What happens when it ends

Once the interest-only period expires, the regular payment typically increases meaningfully, because the same remaining balance now has to amortize down over a shorter remaining period than the loan was originally quoted against. A buyer who has been comfortably meeting interest-only payments can be caught off guard by how much larger the payment becomes once principal repayment starts.

What to model before agreeing to one

An interest-only period defers a cost rather than removing it, so it is worth projecting the post-conversion payment against realistic future cash flow, not just against the business’s current, possibly still-transitioning numbers. Treating interest-only relief as a permanent improvement in affordability, rather than a temporary bridge, is the most common way it gets misunderstood.