SOFR explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
LIBOR has been replaced by transaction-based risk-free rates: SOFR for US dollars, SONIA for sterling, €STR for euro, TONA for yen and SARON for Swiss francs. They are overnight and backward-looking rather than forward-looking term rates, and a credit adjustment spread bridges the economic difference.
What LIBOR Was, and Why It Went
The London Interbank Offered Rate was, for decades, the reference rate for a vast volume of loans and derivatives worldwide. It was produced by asking panel banks at what rate they believed they could borrow unsecured from other banks, for various tenors and currencies.
Two problems ended it. First, after the financial crisis the unsecured interbank market shrank dramatically, so submissions increasingly reflected expert judgement rather than actual transactions — a benchmark for a market that had largely stopped trading. Second, manipulation cases demonstrated how vulnerable a submission-based benchmark is.
Regulators therefore drove a transition to rates anchored in observable transactions. US dollar LIBOR settings ceased in mid-2023, with limited synthetic settings running for a short further period purely to help legacy contracts wind down.
The Replacement Rates
| Currency | Rate | Administrator | Secured? |
|---|---|---|---|
| USD | SOFR — Secured Overnight Financing Rate | Federal Reserve Bank of New York | Secured, on US Treasury repo |
| GBP | SONIA — Sterling Overnight Index Average | Bank of England | Unsecured |
| EUR | €STR — Euro Short-Term Rate | European Central Bank | Unsecured |
| JPY | TONA — Tokyo Overnight Average Rate | Bank of Japan | Unsecured |
| CHF | SARON — Swiss Average Rate Overnight | SIX Swiss Exchange | Secured |
The Three Structural Changes
1. Overnight, not term
LIBOR was quoted for one, three, six and twelve months. The risk-free rates are overnight. A term rate is constructed by compounding the daily rate over the interest period, which means it is known only at the end of the period — "compounded in arrears".
That is operationally awkward for trade finance, where an exporter wants to know the cost at drawdown. The market's answer is either a lookback or observation shift convention that fixes the rate a few days before payment, or the use of a published forward-looking term rate.
2. Backward-looking, not forward-looking
LIBOR embedded the market's expectation of rates over the coming period. The risk-free rates reflect what actually happened. For a borrower this changes the timing of information, not usually the economics over a full cycle.
3. No embedded bank credit risk
LIBOR was an unsecured bank borrowing rate and therefore included bank credit risk, which widened in stress. SOFR is secured on Treasuries and is close to risk free; the others are overnight and near risk free. On a like-for-like basis the risk-free rates therefore sit below where LIBOR would have been.
The Credit Adjustment Spread
That last difference is why simply swapping LIBOR for SOFR in an existing contract would transfer value from lender to borrower. A credit adjustment spread is added to keep the transition broadly economically neutral. For legacy contracts the spread was typically fixed using a historical median of the difference between LIBOR and the risk-free rate over a five-year lookback, so that it is objective and cannot be argued.
For new contracts there is no legacy to preserve, and the credit element is simply built into the negotiated spread. If a bank quotes you a credit adjustment spread on a new PCFC facility, ask what it represents — it may simply be additional margin under another name.
Term Rates
Forward-looking term rates derived from derivatives markets — Term SOFR being the most widely used — restore the operational convenience of knowing the rate at the start of the period. They are widely used in trade finance and business lending precisely because compounding in arrears does not suit a borrower who needs to price an export order today.
When comparing quotes, establish which convention is being used: Term SOFR for the period, or SOFR compounded in arrears with a lookback. The all-in cost can differ, and so can the operational burden on your treasury.
What Changed in India
Indian markets were affected through two channels. Directly, foreign currency borrowings, PCFC facilities and external commercial borrowings referencing LIBOR had to be amended to reference a replacement rate. Indirectly, domestic benchmarks constructed using USD LIBOR — MIFOR being the significant one — needed replacement, and adjusted and modified variants built on SOFR were introduced for the market.
For most exporters the transition is now complete and the practical question is simply how new facilities are priced.
What an Exporter Should Actually Do
- Read your facility documents. Confirm which benchmark and convention apply, and that no legacy LIBOR reference survives in an old sanction letter or contract template.
- Ask for the components separately — benchmark, convention, credit adjustment spread, bank spread, fees.
- Compare like with like. A quote on Term SOFR and a quote on compounded-in-arrears SOFR are not directly comparable at headline level.
- Check hedging documentation. Forward contracts and interest rate hedges must reference the same benchmark and convention as the underlying, or the hedge is imperfect.
- Update export contract templates that reference LIBOR for interest on delayed payments — an unamended clause referencing a rate that no longer exists creates an argument you do not need.
- Review the currency mix annually. The relative attractiveness of rupee and foreign currency credit moves with the two rate cycles.
Practical Tips
- Search your standing contract templates for "LIBOR". It survives in more places than most businesses expect, particularly in interest-on-late-payment clauses.
- Where a counterparty proposes a rate you do not recognise, ask who administers it and where it is published. A benchmark you cannot verify independently is a red flag.
- Keep the observation convention consistent between the loan and any hedge.
- For short-tenor trade finance, the practical difference between conventions is small; do not spend negotiating capital there instead of on the spread.
Related Services & Guides
- Export Credit Interest Rates
- Packing Credit and Export Finance
- RBLR and Benchmark-Linked Pricing
- More Guides
Key Facts About SOFR
- Applies in: All states across India, under the relevant central law.
- Mode: Mostly online via the official government portal.
- Typical timeline: Ranges from a few days to a few weeks depending on the case.
- Non-compliance: May attract penalties, interest or late fees.
- Expert help: TaxClue completes the entire process end to end for you.
Why was LIBOR discontinued?
LIBOR was built on banks' submissions of the rate at which they believed they could borrow, and the underlying interbank market had shrunk to the point where those submissions rested on judgement rather than transactions. That, together with manipulation scandals, made a transaction-based replacement necessary.
What replaced LIBOR?
Currency-specific risk-free rates based on actual transactions — SOFR for US dollars, SONIA for sterling, €STR for euro, TONA for yen and SARON for Swiss francs. Each is published by the relevant central bank or administrator.
Over 90% of compliance penalties in India arise from missed due dates — timely handling can save businesses thousands of rupees each year.
SOFR: a key compliance topic in Indian tax and corporate law that businesses and individuals must understand to remain compliant.