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Alankar Mishra

April 22, 2025

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LIBOR vs SOFR

The London Interbank Offered Rate (LIBOR), once regarded the world’s most vital benchmark interest rate that served as the underlying framework for everything from mortgages to derivatives priced in trillions of dollars, has undergone significant degradation due to several scandals and structural weaknesses within the financial system. The world is now shifting towards a new, more robust benchmark – the Secured Overnight Financing Rate (SOFR).

This article will delve into the SOFR vs. LIBOR debate and discuss the reasons SOFR is replacing LIBOR, along with the consequences of such transitions on the global market, focusing on the banks, borrowers, and financial institutions.

Overview Table: LIBOR vs SOFR

Feature	LIBOR	SOFR
Full Form	London Interbank Offered Rate	Secured Overnight Financing Rate
Based On	Estimated unsecured interbank lending	Actual transactions in the US Treasury repo market
Secured/Unsecured	Unsecured	Secured
Administrator	ICE Benchmark Administration	Federal Reserve Bank of New York
Tenor Availability	Overnight to 12 months	Primarily overnight, with the term SOFR now developed
Transparency	Subjective, based on submissions	Transparent, based on actual market transactions
Risk Factor	Includes bank credit risk	Risk-free rate (backed by collateral)
Transition Deadline	Fully phased out by June 2023	Official replacement benchmark

What is LIBOR?

In the early 1980s, the London Interbank Offered Rate, also known as LIBOR, was introduced and within no time became a popular benchmark for interest rates in the entire financial realm. Major global banks calculate it by averaging the rates of borrowing amongst each other.

Despite its rapid adoption, it did not come without issues. LIBOR also was known to contain a significant flaw: it relied too much on estimate submissions instead of actual transaction validation. Due to banks submitting their expected rates without adequate lending activity, there was immense room for manipulation during the 2008 financial crisis. This was not the only reason false rate reporting was the norm; banks had also gained the means to determine interest rates that benefited their market portfolios.

At one point, there was an endless stream of regulatory investigations alongside lawsuits. This led to the development of SOFR, global regulators were forced to seek out a benchmark that was more reliable and clear.

What is SOFR?

The Secured Overnight Financing Rate, or SOFR, measures the overnight borrowing of cash against collateral U.S. Treasury securities. Accurate transaction data, not calculations, are used to determine this value.

SOFR is now enforced by the Federal Reserve Bank of New York to reflect borrowing costs in efficient markets. Government backing of SOFR makes it a near risk-free rate.

SOFR has officially taken over as the benchmark, replacing USD LIBOR in the U.S.

Key Differences Between LIBOR and SOFR

Feature	LIBOR	SOFR
Calculation Basis	Based on estimates from a panel of banks.	Based on actual overnight repo transactions (secured loans).
Security	Unsecured (includes credit risk premium).	Secured (backed by the US Treasury).
Risk Profile	Carries credit and liquidity risk.	Considered a risk-free rate (minimal credit risk).
Tenor Structure	Multiple tenors available (Overnight, 1-week, 1-month, 3-month, etc.).	Initially, overnight only, but Term SOFR is available for limited use.
Transparency and Integrity	Prone to manipulation (2012 scandal).	Highly transparent, based on real transaction data.

Why Was LIBOR Replaced?

The LIBOR scandal exposed serious flaws in the benchmark’s integrity. Because LIBOR was based on estimates rather than real trades, banks could, and did, manipulate it for profit.

This led to:

Criminal investigations and fines imposed on major banks.

A loss of trust in LIBOR.

A global push for more reliable alternative reference rates.

The FCA and the Fed, along with other global regulators, have determined that LIBOR should be gradually retired in favor of less transaction-aligned benchmarks like SOFR.

How the Transition to SOFR Happened

Shifting from LIBOR to other benchmark rates was one of the most important changes in financial markets. Here’s a short recap of what happened in the timeline:

2017: FCA discloses LIBOR will be cut off.

2018: Federal Reserve publishes SOFR.

2021: The majority of new USD contracts default to SOFR.

June 2023: LIBOR is completely shut down.

SOFR’s features meant that Banks, Corporations, and Governments had to alter their contracts, modify risk models, and change their hedging strategies.

Challenges in the LIBOR to SOFR Transition

Absence of Credit Spread: SOFR does not include a credit premium; only LIBOR does. This impacts pricing in loans and derivatives.

Lack of Forward-Looking Term Rates: SOFR only started as an overnight rate, which complicated many products with term structures needing to be term-structured.

Legal and Operational Problems: Outdated contracts required substantial legal modifications and renegotiations to be updated.

Adoption of the Market: There was a brand SOFR adoption differences across products and institutions, resulting in initial fragmentation.

Even with these impediments, Term SOFR and other measures of spread adjustments were implemented to facilitate the change.

Impact of LIBOR vs SOFR on Loans and Financial Instruments

1. Corporate Loans and Mortgages: For borrowers with floating-rate loans, reference to LIBOR has been changed to SOFR. This often leads to a decrease in the base rate, but lenders tend to make a credit spread adjustment consistent with prior LIBOR terms.

2. Derivatives: The market for SOFR derivatives is now relatively active and includes offerings such as SOFR futures, swaps, and options. It facilitates risk management and price discovery similar to what was available under LIBOR.

3. Securitised Products: The benchmarks for Asset-Backed Securities (ABS) and Mortgage-Backed Securities (MBS) have also transitioned to SOFR, thereby enhancing transparency while achieving compliance with regulatory expectations.

Global Alternatives to LIBOR

While SOFR is the replacement for USD LIBOR, other regions adopted their risk-free rates:

Currency	Benchmark	Replacing LIBOR
GBP	SONIA (Sterling Overnight Index Average)	Yes
EUR	€STR (Euro Short-Term Rate)	Yes
JPY	TONA (Tokyo Overnight Average Rate)	Yes
CHF	SARON (Swiss Average Rate Overnight)	Yes

These rates follow similar principles — transaction-based, overnight, risk-free — and aim to increase global market stability.

Conclusion

The transition from LIBOR to SOFR signifies a momentous change in the context of finance on both a national and international level. While we may look back on LIBOR’s legacy as significant, intertwined with several controversies, SOFR offers a much more secure and reliable infrastructure for the pricing of financial products.

SOFR is undoubtedly favoured among all stakeholders; therefore, every borrower, lender, and even investor must understand the distinction between LIBOR and SOFR as the world seems to be moving towards them. SOFR will certainly be the dominating benchmark in the coming years as it looks to incorporate advanced technologies and undergo continuous innovations.

FAQs

Q1. Why is the financial world moving from LIBOR to SOFR?

Because of various scandals of manipulation and credibility issues, LIBOR became untrustworthy. SOFR, which is based on actual secured transactions, is more transparent, risk-free, and trustworthy.

Q2. Will SOFR always be lower than LIBOR?

That is right. Since SOFR does not include credit risk, it is lower than LIBOR for the most part. However, relative fairness is attained through the use of credit spread adjustments.

Q3. What is the Term SOFR?

SOFR is a development of SOFR designed to fulfill the market's expectations for term structures, particularly in credit and advanced-level finance areas.

Q4. Will SOFR apply globally?

SOFR has taken the place of USD LIBOR. Other currencies have their reference rates as SONIA for British Pounds, SARON for Swiss Francs, and €STR for Euros.

Q5. How will the LIBOR to SOFR transition impact Indian markets?

A lot of Indian businesses obtained external commercial borrowings (ECBs) tied to LIBOR (London Interbank Offered Rate). They have now transitioned to SOFR-based loans, which require changes in the law and cost structure.

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