Interest Rate Floor Benefit Calculator

Loan documents often include interest rate floors — a minimum rate borrower pays even if index falls. This calculator sizes the lender benefit / borrower cost.

Loan notional

Floor rate

Current index rate

Years with floor active

Annual lender benefit

$100,000

Total benefit over years

$500,000

Basis points benefit

100

How the math works

Floor benefit = notional × (floor − index) per year, when index below floor. Lender captures spread borrower can't avoid.

Smart borrowers push for no-floor or low-floor loans when rates are high (floors unlikely to bind). Push back is routine in loan negotiations.

How to Use

Enter loan notional.
Enter floor rate.
Enter current index.
Enter years with floor active.
Read annual benefit to lender.

Frequently Asked Questions

Why do lenders set floors?

To guarantee a minimum yield in falling-rate environments. Common on agency floating loans (Fannie/Freddie) with 0.50% - 2.00% floors on SOFR base rates.

Can borrower remove floor?

No — it's baked into loan docs. Borrower can prepay (subject to penalty) or renegotiate at maturity. Life-of-loan floors are one-way in lender's favor.

Is floor a hedge?

It's not a derivative — it's a contractual floor on the loan rate. No fair-value marks or collateral posting; it simply kicks in automatically when index drops below floor.