Calculate yield, find your offer price, check LTV, compare notes side by side — all free, no signup required.
Start with the Yield Calculator →Fill in the note details — UPB, monthly payment, term, and your purchase price or target yield.
See your yield, discount, cents on the dollar, and LTV calculated instantly — no signup, no waiting.
Every result includes a plain-English explanation and a verdict — so you always know what the numbers actually mean.
Most note investing calculators online are either buried inside paid memberships or built for note sellers — not buyers. These tools are built specifically for note investors: the people who need to price deals fast, compare notes side by side, and make confident offers. Every calculation is shown in plain English so you always understand what the numbers mean, not just what they are. Learn more about this site →
Mortgage note investing means buying the debt itself — the promissory note and mortgage — rather than buying the property. When you own a note, you step into the position of the lender: the borrower makes their monthly payment to you instead of to a bank, and you earn a return on the discount between what you paid for the note and what it's actually worth. Investors are drawn to notes because they offer real estate-backed returns without the landlord headaches of tenants, repairs, and vacancies that come with owning physical property.
A performing note is one where the borrower is current on payments — you're simply collecting a predictable monthly cash flow at a return typically in the 8-12% range. A non-performing note is one where the borrower has stopped paying. These sell at steeper discounts and carry more risk and work, but can produce higher returns (often 15-25%+) through loan modification, a negotiated payoff, or foreclosure and resale of the underlying property.
Every note deal comes with a story — a motivated seller, a great location, a "can't miss" opportunity. Stories don't determine whether a deal is actually good; the math does. That's the purpose of the six free tools on this site: strip away the sales pitch and get to the real yield, the real loan-to-value ratio, and the real monthly payment, so you can make a decision based on numbers instead of narrative.
NoteInvestorsTools.com offers free mortgage note investing tools including a Note Yield Calculator, an Offer Price Calculator, an LTV Safety Checker, a Note Comparison Tool, a Note Payment Calculator, and a Due Diligence Checklist. All tools are free to use with no signup required.
Yes — all tools on NoteInvestorsTools.com are completely free with no account, no subscription, and no credit card required. Every calculator runs entirely in your browser and produces instant results.
A mortgage note is a legal document signed by a borrower that promises to repay a real estate loan. It specifies the loan amount (UPB), interest rate, payment schedule, and maturity date. Note investors purchase these debt instruments from lenders or sellers, often at a discount, to earn returns from the ongoing monthly payments.
Yield on a mortgage note is the annualized return you earn based on your purchase price and the note's payment stream. If you buy a note at a discount to its unpaid principal balance (UPB), your yield will be higher than the note's stated interest rate. The Note Yield Calculator on this site computes your exact yield given the purchase price, UPB, monthly payment, and remaining term.
I built this site because I wanted the tools I was already using to evaluate my own note deals, and I figured other investors starting out could use the same thing. I've spent over 40 years around real estate in one form or another — as a licensed general contractor, as the right-hand to an active investor through the 2007 financial crisis, and now as an active mortgage note buyer.
The biggest lesson those years taught me: the deal that looks the most exciting on the surface is usually the one that most needs the math checked. Run the numbers first, get emotionally attached second — not the other way around.