Finance

What is LIBOR (London Interbank Offered Rate)?

Updated 2026-07-23

LIBOR (London Interbank Offered Rate) was a benchmark interest rate that represented the average rate at which major global banks could borrow from one another. It was calculated and published daily by the Intercontinental Exchange (ICE) for several currencies and loan periods.

Historically, it served as the primary reference for short-term interest rates globally, influencing the cost of loans, mortgages, and derivatives. Due to manipulation scandals and changes in bank borrowing practices, LIBOR has been discontinued and replaced by alternative rates like SOFR (Secured Overnight Financing Rate) in the U.S.

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How it works

Each day, a panel of major global banks submitted the interest rates at which they believed they could borrow funds from other banks for various timeframes, from overnight to one year. The administrator, ICE Benchmark Administration, would then calculate a trimmed average of these submissions, discarding the highest and lowest quartiles to arrive at the final LIBOR figure.

This rate was published for five major currencies: the U.S. dollar, Euro, British pound, Japanese yen, and Swiss franc. This process was intended to reflect the health of the financial system and the cost of unsecured funding for banks.

Why it matters

While LIBOR is now defunct, its legacy affects property managers with older variable-rate commercial mortgages or business loans that were tied to it. Understanding LIBOR is crucial for navigating the transition of these financial agreements to new benchmark rates like SOFR.

This change can impact monthly payments and overall financing costs for property acquisitions, renovations, or business operations. Developing a solid vacation rental business plan can help manage these financial variables.

Examples

  • A commercial real estate loan taken out in 2015 to purchase a portfolio of vacation rental properties with a variable interest rate set at 'LIBOR + 2.5%'.
  • An adjustable-rate mortgage (ARM) on a personal residence that a host later converted into a short-term rental, with interest adjustments tied to the 1-year USD LIBOR.
  • A business line of credit used by a property management company for operational expenses, where the interest rate floated based on the 3-month USD LIBOR.
  • Interest rate swaps used by larger hospitality companies to hedge against fluctuations in their borrowing costs, with payments calculated based on LIBOR.

Frequently asked questions

Why was LIBOR replaced?+
LIBOR was replaced due to manipulation scandals where banks were found to be falsely reporting rates. Additionally, the underlying market it was meant to measure—unsecured interbank lending—had shrunk significantly. This made the rate less reliable, prompting regulators like the UK's Financial Conduct Authority (FCA) to mandate a transition to more robust, transaction-based alternatives.
What is SOFR and how is it different from LIBOR?+
SOFR, or the Secured Overnight Financing Rate, is the primary replacement for USD LIBOR. Unlike LIBOR, which was based on banks' estimates of unsecured borrowing costs, SOFR is based on actual, observable transactions in the U.S. Treasury repurchase market. This makes it a more transparent and reliable benchmark. Because it is a secured, overnight rate, adjustments are often needed when applying it to loans that were previously based on unsecured, longer-term LIBOR rates.
My business loan is still tied to LIBOR. What should I do?+
All LIBOR settings have now ceased publication. If your loan agreement is still tied to LIBOR, it should contain 'fallback language' that specifies the replacement rate, typically SOFR plus a credit spread adjustment. You should immediately contact your lender to confirm how your rate is now being calculated and to understand the impact on your payments. Reviewing the loan documents with a financial or legal advisor is highly recommended to ensure a smooth transition.
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