# Interest-Only DSCR Loans: Payment and DSCR Math | KREC

*How interest-only DSCR loans lower the payment, how they can lift your ratio, and what happens when amortization starts. Worked example included.*

## Interest-Only DSCR Loans: When a Lower Payment Is Worth It

An interest-only period can turn a borderline rental into a qualifying one. Here's the math, and the trade-off you're making.

Short answer

With an interest-only DSCR loan, you pay only interest for an initial period, often several years, before the loan starts amortizing. The lower payment can lift the DSCR and improve cash flow. The trade-off: no principal paydown during that period, and a higher payment once amortization begins.

Key points

- A lower payment in the early years.
- Can move a borderline DSCR above 1.0.
- No principal paydown during the interest-only period.

### How interest-only works

For the interest-only period, each payment covers just the interest on the balance. Afterward, the loan amortizes over the remaining term, so the payment rises. Some lenders qualify the loan on the interest-only payment and others on the amortizing payment, so ask which applies.

**Deal sheet: $300,000 loan at 7.50%, $2,500 rent, illustrative**

|  | Amortizing | Interest-only |
| --- | --- | --- |
| Principal and interest | $2,098 | $1,875 |
| Taxes and insurance | $450 | $450 |
| **Total payment (PITIA)** | **$2,548** | **$2,325** |
| **DSCR at $2,500 rent** | **0.98** | **1.08** |

In this example, interest-only lowers the payment by about $223 a month and moves the ratio from just under 1.0 to above it.

### When it makes sense

- **Value-add and BRRRR plays** where you plan to refinance or sell within a few years
- **Strong-appreciation markets** where cash flow matters more than paydown
- **Borderline ratios** that need help to qualify

### When to be careful

- You plan to hold long term and want the balance to shrink
- The deal only works at the interest-only payment
- Rents may not rise enough to cover the later, higher payment

> Have a rental in mind? Send the address and expected rent, and a KREC loan advisor will run the DSCR for you. [Check my DSCR](https://keyrealestatecapital.com/contact)

For other ways to strengthen the ratio, see [what DSCR you need](https://keyrealestatecapital.com/blog/what-dscr-ratio-do-you-need); for structures over time, see [fixed or adjustable for rentals](https://keyrealestatecapital.com/blog/fixed-vs-adjustable-rental-loans).

### Frequently asked questions

#### What is an interest-only DSCR loan?

It's a DSCR loan where you pay only interest for an initial period before principal payments begin. The lower payment can improve cash flow and the ratio.

#### Does interest-only help me qualify?

It can, if the lender qualifies the loan on the interest-only payment. Some lenders use the amortizing payment instead.

#### What happens when the interest-only period ends?

The loan starts amortizing over the remaining term, so the payment rises. Plan for that payment or for a refinance before it starts.

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How DSCR loans qualify a rental on its rent instead of your income: the formula, a worked example, what lenders check and a five-minute self-test.

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## Article Metadata
- **Headline:** Interest-Only DSCR Loans: When a Lower Payment Is Worth It
- **Published:** 2026-10-27
- **Author:** Key Real Estate Capital

## Frequently Asked Questions

### What is an interest-only DSCR loan?

It's a DSCR loan where you pay only interest for an initial period before principal payments begin. The lower payment can improve cash flow and the ratio.

### Does interest-only help me qualify?

It can, if the lender qualifies the loan on the interest-only payment. Some lenders use the amortizing payment instead.

### What happens when the interest-only period ends?

The loan starts amortizing over the remaining term, so the payment rises. Plan for that payment or for a refinance before it starts.

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