The most frequent trigger is the unpaid trade invoice. A client accepted the goods or signed off on the deliverables, the credit period expired, the follow-up emails produced promises and nothing else. A demand notice converts that drift into a dated, formal record, and it is usually at this point that the debtor's accounts team finds the money. The second classic scenario is the personal or business loan that was never repaid, whether documented by a loan agreement, bank transfers or a promissory note under Section 4 of the Negotiable Instruments Act. Here the notice serves a double purpose: it demands repayment and it invites an acknowledgment that resets limitation if the debtor pleads for time in writing.
Security deposits are a third recurring case. Landlords who withhold a refundable deposit after the tenancy ends, vendors who keep an advance after failing to deliver, employers who delay terminal dues: each owes a liquidated sum that a demand notice can claim with interest. Businesses also use the notice as the opening move before a summary suit, an arbitration reference where the contract contains an arbitration clause, or an MSEFC filing on the Samadhaan portal.
Two edge cases deserve attention. If the debt was partly paid recently, that part payment against interest or principal, recorded in writing, extends limitation under Section 19 of the Limitation Act; mention it in the notice. And if the debtor is a company showing signs of insolvency, weigh carefully whether to send an ordinary demand or a Section 8 IBC demand notice, because the latter starts a ten-day statutory clock and signals an intent to trigger insolvency rather than simply recover.