PNB–Nirav Modi: The Letter of Undertaking No One Watched
The biggest frauds do not always need complex products. Sometimes they need a boring process that nobody checks properly.
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A Letter of Undertaking sounds like paperwork. In the PNB fraud, paperwork became a billion-dollar operational-risk lesson.
The story
In February 2018, Punjab National Bank disclosed a fraud involving Letters of Undertaking. RBI’s press release referred to media reports of a fraud involving USD 1.77 billion.
RBI described it as a case of operational risk arising from delinquent behaviour by one or more employees and failure of internal controls.
That sentence is the entire case study. The product was not the only problem. The process around the product failed.
Fraud emerges: PNB disclosed unauthorised LoU-related exposure.
RBI response: RBI described the issue as operational risk and internal-control failure.
Aftermath: Banks and regulators re-examined SWIFT/core-banking controls.
The finance/legal twist
Off-balance-sheet or contingent obligations can become very real when invoked. The control twist is that systems must talk to each other.
If SWIFT messages, core banking entries, authorisation logs and reconciliation reports are not integrated, fraud can travel through the gap.
Practical example
If a branch issues a guarantee-like instrument but it is not recorded in the central liability system, head office may not see the exposure. The branch looks normal while the bank accumulates hidden risk.
Why this matters now
As banks digitise, operational risk becomes more technology-linked. A process gap can scale faster than manual fraud ever could.
Lessons for founders, finance teams and investors
- Integrate messaging systems with core accounting systems.
- Review dormant, high-value and exception transactions daily.
- Do not let relationship managers override credit discipline.
- Internal audit should test end-to-end transaction flow, not only paperwork.
Finin2min Takeaway
The PNB fraud proves that controls are not bureaucracy. Controls are the difference between a bank and a blind trust exercise.
Reality check
Fraud cases involve allegations, investigations and court processes. The safe learning is control design, not sensational naming.
Finin2min prompt
Ask your finance team: Which high-value obligation can be created outside the main accounting system?