1. The Statutory Framework - Section 18

Section 18 - Effect of acknowledgment in writing:
Where, before the expiration of the prescribed period for a suit or application in respect of any property or right, an acknowledgment of liability in respect of such property or right has been made in writing signed by the party against whom such property or right is claimed, or by any person through whom he derives his title or liability, a fresh period of limitation shall be computed from the time when the acknowledgment was so signed.

Essential Ingredients to extend limitation:

1. In writing and signed: Oral acknowledgment is not enough. Signature includes authorized agent, but must be proved.
2. Made before expiry of limitation: If limitation has already expired, acknowledgment cannot revive it. This is settled law.
3. By the debtor / person liable: Against whom the right is claimed.
4. Clear admission of liability: It need not specify exact amount, but must admit a subsisting jural relationship and liability. A bare denial, or acknowledgment with words like "without prejudice" is not acknowledgment.
5. Implication of promise to pay: The acknowledgment must be such that a promise to pay can be inferred.

Once these are satisfied, a fresh period of 3 years / 12 years etc. starts from the date of acknowledgment.

Section 19 is different - it deals with part-payment of debt.

2. What is "Failure to Account For Acknowledgment Extending Limitation"?

It happens when:

A] Plaintiff fails to plead and prove it: Plaintiff sues on a time-barred debt but does not produce the letter, reply notice, balance sheet, OTS proposal, etc. that would have saved limitation. Result - suit is dismissed as barred.

B] Court / Tribunal fails to consider it: Even when acknowledgment is on record, the Trial Court ignores it and holds the suit barred. This is an error of law. Since limitation goes to jurisdiction, Appellate Court can set aside the judgment.

The Supreme Court has repeatedly said the Court is bound to examine whether Section 18 is attracted if it is pleaded with material particulars.

3. Detailed Case Laws

1. Khan Bahadur Shapoor Freedom Mazda vs Durga Prasad Chamaria - AIR 1961 SC 1236

Locus classicus on acknowledgment. SC laid down the test:
Acknowledgment must be an admission of liability, though it need not amount to a promise to pay. The words used must indicate existence of jural relationship between parties such as debtor-creditor. Statement that "I will think about it" is not acknowledgment.

2. Tilak Ram vs Nathu - AIR 1967 SC 935

Acknowledgment must be unqualified. If a person acknowledges liability but says "I am not liable" in same breath, it is not acknowledgment under Section 19 [now Section 18 of 1963 Act].

3. Sampuran Singh vs Niranjan Kaur - AIR 1999 SC 1047

Limitation once expired cannot be revived. Court held acknowledgment after expiry of limitation period does not extend limitation. The acknowledgment must be prior to expiration.

4. Syndicate Bank vs R. Veeranna - (2003) 4 SCC 484

Borrower issued letters admitting liability and requesting time for payment within limitation period. SC held these are valid acknowledgments even if amount is not specified, provided liability is admitted. Failure of lower courts to treat these letters as acknowledgment was reversed.

5. J.C. Budhraja vs Chairman, Orissa Mining Corp. - (2008) 2 SCC 444

SC clarified two points:

• Acknowledgment under Section 18 extends limitation only for the claim acknowledged.
• For arbitration, a mere letter asking for payment or settlement discussion is NOT acknowledgment of liability to pay.

This case is relied upon in the latest 2025 judgment.

6. Asset Reconstruction Company (India) Ltd. vs Bishal Jaiswal - (2021) 6 SCC 366

Landmark for IBC and commercial suits. SC held that entries in audited Balance Sheets signed by Director amount to acknowledgment under Section 18. Must be examined case-wise, but can extend limitation for Section 7 IBC applications. If NCLT fails to account for balance sheet acknowledgment, its finding of limitation barred is liable to be set aside.

7. Laxmi Pat Surana vs Union Bank of India - (2021) 8 SCC 481

Re-affirmed Bishal Jaiswal. Proposal for OTS, letter seeking restructuring, and balance sheet acknowledgment, all made before expiry, extend limitation.

8. M/s Airen and Associates vs M/s Sanmar Engineering Services Ltd. - 2025 LiveLaw (SC) 745

Most recent SC clarification: Acknowledgment of partial debt does not extend limitation for entire claim.
Facts: Contractor acknowledged Rs. 20 lakhs out of Rs. 1.5 crores claim. Appellant argued entire claim revived. SC dismissed - Section 18 extends limitation only to the extent of liability acknowledged. Failure to appreciate this distinction leads to wrong computation of limitation.

9. New Mangalore Port Trust vs Clifford D'Souza - 2025 INSC 440

SC held Section 18 applies even to proceedings under Public Premises (Eviction) Act, 1971. Once Limitation Act is applicable, all its provisions including Section 18 apply. If Estate Officer failed to consider acknowledgment letter dated 19.04.2004 made within limitation, order is vitiated.

4. Effect of Failure to Account

If a valid acknowledgment is proved and Court fails to account for it:

1. Suit wrongly dismissed as barred: Judgment is perverse and liable to be reversed in First Appeal under Section 96 CPC.
2. If Court wrongly extends limitation on invalid acknowledgment: Suit is without jurisdiction, decree is nullity. Can be challenged under Section 3.
3. In IBC / DRT: Application under Section 7 IBC or OA before DRT, if NCLT/DRT ignores balance sheet, appeal will succeed.

Practical Checklist for Lawyers:

• Plead date of acknowledgment in plaint with specific paragraph.
• File original signed document - email, letter, ledger confirmation, balance sheet, OTS proposal.
• Prove signature of defendant.
• Show acknowledgment was BEFORE expiry.
• Argue jural relationship exists.

If you are drafting a ground of appeal for "Failure to account for acknowledgment", frame it like this:

"The Learned Trial Court erred in holding the suit barred by limitation without considering Ex. P-4 dated ___, which is a clear written acknowledgment of liability signed by Defendant within 3 years from date of cause of action, thereby giving fresh limitation under Section 18. Non-consideration vitiates the finding on limitation."