Finance

Mortgage Note Investing Yield Calculator

Find the effective yield on a discounted private mortgage note purchase.


Mortgage Note Investing Yield Calculator

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Note investing buys an existing private mortgage note at a discount from its face value — that discount alone boosts the buyer’s effective yield above the note’s stated rate.

How it works

The note’s face value times its stated interest rate gives annual interest income. Dividing that by the actual purchase price (rather than face value) gives the yield on cost — higher than the stated rate whenever the note is bought at a discount.

What this does not include

This computes interest-based yield on cost only — it doesn’t account for the note’s principal paydown over time, prepayment risk, or the borrower’s default risk, all real factors in a note’s total realized return.

How to use this calculator

  1. Enter the note’s face value, stated interest rate, and the price paid for it.

Frequently asked questions

Why would a note sell below its face value?

Sellers (often the original lender or a fund) may sell notes at a discount for liquidity, to offload perceived risk, or because the note’s rate is below current market rates, making a discount necessary to attract buyers.

What risks does note investing carry?

Borrower default risk, prepayment risk (losing the expected income stream early), and the complexity of loan servicing and, if necessary, foreclosure — all beyond the pure yield-on-cost calculation shown here.

Is note investing the same as being a landlord?

No — a note investor holds the right to loan payments, not the property itself, unless a default eventually leads to foreclosure and property ownership.

Important: This is general information, not financial advice. Figures are estimates, and your lender or provider decides the real numbers. Check with a qualified adviser before acting on them.

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Written by

M. Whitfield

Personal finance writer

M. Whitfield writes the personal finance calculators, covering loans, mortgages, savings, tax and investment maths. The focus is on showing exactly which number goes into a formula and which assumptions a result depends on, so readers can tell when a figure applies to their situation and when it does not. Every finance page states what it does not account for as plainly as what it does.

Reviewed by

A. Whitfield-Reyes

Calculator reviewer — finance

A. Whitfield-Reyes reviews the finance calculators, checking compounding conventions, rate-period alignment, and whether each page is explicit about the costs and tax treatment it leaves out. Financial results are easy to state with false precision, so review focuses on whether the page makes its assumptions visible to a reader who is not looking for them.

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