Interest-Only vs Amortizing Payment Calculator

It lowers the qualifying payment, which raises DSCR and can unlock leverage a fully amortizing payment would not support. The trade is no principal reduction during the interest-only period and a payment step-up when it ends.

Commonly the first 10 years of a 30-year term, though 5-year and 7-year structures exist. After it ends the loan re-amortizes over the remaining term, which raises the payment.

Usually yes over a long hold, because the balance never falls during the interest-only period. Over a short hold the difference is small and the monthly cash flow benefit can outweigh it.

Frequently there is a pricing adjustment for the interest-only feature. The size varies by program, leverage, and credit; it is not fixed and is not quoted here.

Long holds, plans to refinance against a lower balance, and deals where the rent already clears the amortizing DSCR comfortably. Principal paydown is a forced-savings return that shows up as equity at sale.

Not mid-term on most fixed structures — the interest-only period and its length are set at closing and the loan converts to fully amortizing automatically at the end of that window. If you want flexibility later, a refinance is generally the way to change the structure.

Yes, holding rent and rate constant, an interest-only payment is lower than the amortizing payment, so DSCR is always higher during the interest-only period. That is why some investors choose interest-only specifically to clear a lender's minimum DSCR threshold.

The balance re-amortizes over whatever term remains, so a 10-year interest-only period on a 30-year loan leaves only 20 years to pay off the full balance, which typically raises the payment noticeably. This calculator shows that step-up so you can plan for it before it happens.

It shifts risk toward relying on rent growth, refinancing, or sale rather than paydown to build equity, since the balance does not shrink during the interest-only years. It is not inherently unsafe, but it works best paired with a clear exit plan before the payment steps up.

No, availability varies by lender and program, and some cap interest-only at lower maximum leverage than fully amortizing loans. Confirm interest-only availability, term length, and any pricing adjustment with the specific program you are considering.

A fully amortizing loan builds equity through both principal paydown and any appreciation, while an interest-only loan builds equity from appreciation alone during the interest-only years. Over a short hold the gap is often modest; over a long hold it compounds.

Many notes permit optional principal curtailments even during the interest-only period, which reduces the balance the interest is calculated on going forward. Check the note and any prepayment penalty terms first, since curtailments can still trigger a penalty on some programs.