Arbitration runs on communications — the notice invoking arbitration, the appointment of arbitrators, statements of claim and defence, and ultimately the delivery of the award. Each of these can set a clock ticking or extinguish a right. Section 3 of the Arbitration and Conciliation Act, 1996 answers a deceptively simple question that recurs at every stage of the process: when is a written communication treated as received? By creating a deeming fiction tied to delivery at the addressee's place of business, habitual residence or mailing address — and a fallback to the last known address by registered letter — the section prevents a recalcitrant party from frustrating proceedings simply by refusing to accept post. This article unpacks the text, the deeming mechanism, the carve-out for judicial proceedings, and the leading authorities that govern service of notices and awards.
The statutory text and its place in the scheme
Section 3 falls within Chapter I (General Provisions) of Part I of the Act and therefore governs domestic arbitrations and international commercial arbitrations seated in India. The provision reads, in substance: unless otherwise agreed by the parties, (a) any written communication is deemed to have been received if it is delivered to the addressee personally or at his place of business, habitual residence or mailing address; and (b) if none of those places can be found after making a reasonable inquiry, a written communication is deemed to have been received if it is sent to the addressee's last known place of business, habitual residence or mailing address by registered letter or by any other means which provides a record of the attempt to deliver it. Sub-section (2) provides that the communication is deemed to have been received on the day it is so delivered. Sub-section (3) carves out an important exception: the section does not apply to written communications in respect of proceedings of any judicial authority.
The provision is modelled almost verbatim on Article 3 of the UNCITRAL Model Law on International Commercial Arbitration, 1985. Its function is purely procedural — it supplies a uniform default rule for reckoning service across the entire arbitral process, from the request that commences proceedings under Section 21 to the delivery of the signed award under Section 31(5). For the foundational vocabulary that the Act uses throughout, see our note on definitions of arbitration, arbitral tribunal and court, and for the broader architecture of Part I, the introduction to the 1996 Act.
The deeming fiction: delivery, not actual receipt
The heart of Section 3 is a legal fiction. A communication is ‘deemed’ to have been received in the circumstances the section describes, irrespective of whether the addressee actually read it, acknowledged it, or was even present. This is a deliberate policy choice. Arbitration is a consensual process between commercial parties who have agreed to resolve their disputes privately; the legislature did not want one party to be able to stall or wreck the proceedings by the simple expedient of refusing delivery or going silent. The deeming fiction shifts the focus from the subjective state of the addressee's knowledge to the objective fact of delivery at a recognised location.
The first limb of sub-section (1)(a) sets out the ordinary rule: delivery to the addressee personally, or at his place of business, habitual residence or mailing address, completes service. The three location-based options are disjunctive — delivery at any one of them suffices. Importantly, this primary limb does not require registered post or proof of an attempt to deliver; ordinary delivery at the correct place is enough, and the burden of displacing the natural inference of receipt then lies on the addressee.
The last known address fallback
Sub-section (1)(b) is the safety valve. It applies only when none of the places mentioned in clause (a) — place of business, habitual residence or mailing address — can be found after making a reasonable inquiry. Two conditions must then be satisfied for the deeming fiction to operate. First, the sender must have made a reasonable inquiry to locate the addressee; the fallback is not a licence to skip straight to the last known address out of convenience. Second, the communication must be sent to the addressee's last known place of business, habitual residence or mailing address either by registered letter or by any other means that provides a record of the attempt to deliver it.
The requirement of a ‘record of the attempt to deliver’ is significant. Registered post with acknowledgement due, courier with tracking, or any documented mode generates contemporaneous evidence that the sender did everything the statute demanded. Courts have read clause (b) strictly: the deeming fiction under this limb is unavailable unless the sender first shows that the addressee's current address could not be ascertained despite a genuine effort. This guards against abuse by a claimant who deliberately serves a stale address to obtain an ex parte advantage.
What ‘reasonable inquiry’ demands
The phrase ‘after making a reasonable inquiry’ is the gatekeeper to clause (b). The Act does not prescribe a checklist, and reasonableness is necessarily fact-sensitive, but the underlying principle is that the sender must act in good faith to find the addressee before falling back on a last known address. Where parties have a long-standing contractual relationship, the address recorded in the contract, in earlier correspondence, or in statutory filings is the natural starting point. A sender who ignores an address change of which it had notice, or who serves an address it knows to be defunct, cannot claim the protection of the deeming fiction.
This dovetails with the commencement rule. Under Section 21, arbitral proceedings in respect of a particular dispute commence on the date on which a request for that dispute to be referred to arbitration is received by the respondent, unless the parties agree otherwise. Whether that request has been ‘received’ is determined through the lens of Section 3. A defective notice — one sent to a wrong address without any inquiry — can therefore unravel the very foundation of the reference. The proper invocation of arbitration is closely tied to the validity of the underlying arbitration agreement and its form.
Notice and the arbitral clock: Datar Switchgears
The interaction between service and the commencement of proceedings was examined in Datar Switchgears Ltd. v. Tata Finance Ltd., (2000) 8 SCC 151. The dispute arose from a lease agreement containing an arbitration clause. Tata Finance issued a demand notice and later appointed a sole arbitrator after the contractual notice period; the appointee proceeded and an award followed. The appellant challenged the manner in which the arbitrator had been appointed and the conduct of the proceedings. The Supreme Court analysed when the right to appoint an arbitrator crystallised and how notices under the agreement were to be treated.
The decision is instructive for Section 3 purposes because it underscores that the validity of the notice mechanism — including whether and when a communication is treated as received — can be outcome-determinative. A party who ignores a duly served notice does so at its peril, because the deeming fiction in Section 3, read with Section 21, can validly set the proceedings in motion in its absence. Conversely, where the notice machinery is not properly invoked, the foundation of the appointment may be vulnerable. The case is frequently cited alongside the court's power to refer parties to arbitration under Section 8.
Delivery of the award: Section 3 meets Section 31(5)
The most consequential application of Section 3 is to the delivery of the signed arbitral award. Section 31(5) requires that, after the award is made, a signed copy be delivered to each party. This is not a mere ceremonial step: delivery of the signed copy is the event that triggers the limitation period of three months (extendable by thirty days for sufficient cause) for an application to set aside the award under Section 34(3), as well as the windows for correction and additional awards under Section 33. Section 3 supplies the test for when that delivery is complete.
The Supreme Court drove this home in State of Maharashtra v. Ark Builders Pvt. Ltd., (2011) 4 SCC 616. The arbitrator had handed a signed copy of the award only to the claimant because the State had not paid the arbitration costs; a copy was later deposited at the Executive Engineer's office. The Court held that the delivery of a signed copy of the award under Section 31(5) is not a matter of mere formality but a matter of substance. The limitation period under Section 34(3) commences only from the date on which a signed copy of the award is received by the party seeking to challenge it — not from delivery of an unsigned copy or from constructive knowledge of the award's contents.
Service on an agent: Benarsi Krishna Committee
A recurring practical question is whether handing the award to a party's lawyer, employee or other representative counts as service on the party itself. The Supreme Court answered this in Benarsi Krishna Committee v. Karmyogi Shelters Pvt. Ltd., (2012) 9 SCC 496. Disputes under a collaboration agreement had gone to a sole arbitrator, and the award was served on the party's advocate rather than the party. The question was whether such service amounted to compliance with Section 31(5) so as to start the Section 34(3) limitation clock.
The Court held that ‘party’ in Section 31(5) means the party to the arbitration agreement itself, and that delivery of a signed copy of the award to the party's agent or advocate does not satisfy the requirement of Section 31(5). To constitute effective service, the signed copy must be delivered to a person who has the knowledge to understand and appreciate the award and to take an informed decision on whether to challenge it — ordinarily the party, not a representative. The limitation period therefore did not begin to run until the party itself received the signed copy. Benarsi Krishna aligns with Ark Builders in treating delivery as a substantive right rather than a procedural technicality.
The deeming fiction is rebuttable
While Section 3 creates a strong presumption of receipt, the presumption is not conclusive. The Delhi High Court has clarified that the deemed service contemplated by Section 3 is rebuttable: a party can displace it by establishing that delivery could not in fact have been effected despite the sender having ostensibly fulfilled the conditions of the section. In other words, the deeming fiction protects a diligent sender, but it does not foreclose a respondent from proving that, in the particular circumstances, no real opportunity to receive the communication existed — for instance, where the registered letter was returned undelivered or the address used was demonstrably wrong and known to be so.
This rebuttable character matters most when a party seeks to set aside an ex parte award on the ground that it never received notice of the proceedings or of the award. The court will examine whether the sender genuinely complied with clause (a) or, failing that, satisfied the ‘reasonable inquiry’ and ‘record of attempt’ requirements of clause (b). Where the sender did everything the statute required, the burden lies squarely on the addressee to show why receipt should not be presumed.
Party autonomy: ‘unless otherwise agreed’
Section 3 opens with the words ‘unless otherwise agreed by the parties’, making the default rule subordinate to party autonomy — a theme that runs through the whole of Part I. Parties are free to stipulate their own mode and reckoning of service: they may designate email or other electronic means, nominate specific addresses or persons for service, or agree that communications to a particular representative shall bind the party. Many institutional rules and well-drafted arbitration clauses do exactly this, displacing the statutory default with a tailored notice regime.
Where parties have so agreed, the agreed mechanism governs and the statutory deeming rule yields. This is consistent with the Act's broader respect for autonomy, seen for example in the parties' freedom to determine the procedure, the place of arbitration, and the number of arbitrators. It is also why careful drafting of the notices clause is a matter of real consequence: a bespoke clause can both streamline service and avoid disputes about whether the statutory conditions were met. The flip side of autonomy is the duty to raise objections promptly, which is the subject of our note on waiver of the right to object under Section 4.
The carve-out for judicial proceedings
Sub-section (3) expressly provides that Section 3 does not apply to written communications in respect of proceedings of any judicial authority. The rationale is straightforward: communications connected with court proceedings — whether an application under Section 9 for interim measures, a Section 11 petition for appointment of arbitrators, a Section 34 challenge, or enforcement proceedings — are governed by the service rules of the relevant procedural law, principally the Code of Civil Procedure, 1908, and the rules of the court concerned.
The practical effect is a clean division of labour. Within the arbitral proceedings themselves — notices to the tribunal and between the parties, statements of claim and defence, procedural directions, and delivery of the award — Section 3 supplies the rule of receipt. But the moment a party moves a court, the CPC and court rules take over. So, for example, service of a Section 9 application for interim measures by court is governed by the court's own process, not by the deeming fiction in Section 3.
Interaction with Section 21 and commencement
Section 3 and Section 21 work in tandem at the threshold of arbitration. Section 21 fixes the date of commencement by reference to when the respondent ‘receives’ the request to refer the dispute to arbitration; Section 3 tells us when that receipt is deemed to have occurred. The date of commencement is not academic: it is the reference point for limitation under the Limitation Act, 1963 (a Section 11 application or the substantive claim itself can be time-barred by reference to it), and it determines which version of the Act — pre- or post-amendment — applies to the proceedings.
Because so much turns on the commencement date, a party invoking arbitration should ensure that its Section 21 request is served in a manner that squarely attracts the deeming fiction: delivery at the contractual or business address, and, if that is impossible after inquiry, registered post to the last known address with proof of the attempt. A notice that cannot satisfy Section 3 risks a finding that proceedings never validly commenced — a result that can be fatal where the limitation period has since expired.
Electronic communications and modern modes
Section 3 was drafted in 1996 with registered letters and physical mailing addresses in mind, but its language is flexible enough to accommodate modern practice. Clause (b) permits delivery by ‘any other means which provides a record of the attempt to deliver’, which is broad enough to encompass courier and, where parties have so agreed, electronic transmission that generates a delivery record. In practice, the surest path is for the parties to address electronic service expressly in their arbitration clause — designating email addresses and treating a sent or read receipt as proof of delivery — thereby invoking the ‘unless otherwise agreed’ opening words rather than relying on a strained reading of the 1996 text.
Even absent express agreement, tribunals frequently conduct proceedings substantially by email today, and courts have been pragmatic in accepting documented electronic service where the recipient had clearly engaged with the address used. The cautious practitioner, however, will not abandon the statutory modes for communications that trigger limitation — particularly the delivery of the signed award — given the substantive consequences spelt out in Ark Builders and Benarsi Krishna.
Practical takeaways for aspirants and practitioners
For examination and practice alike, a few propositions repay memorisation. First, Section 3 creates a deeming fiction of receipt that turns on delivery at a recognised location, not on actual knowledge. Second, the last known address fallback in clause (b) is available only after a reasonable inquiry and requires registered letter or another mode that records the attempt to deliver. Third, the fiction is rebuttable — a party can show that delivery could not in fact have been effected. Fourth, the provision applies throughout the arbitral process but expressly excludes communications in court proceedings under sub-section (3).
Fifth, and most heavily tested, is the link with the award: under State of Maharashtra v. Ark Builders and Benarsi Krishna Committee v. Karmyogi Shelters, limitation under Section 34(3) runs only from delivery of a signed copy of the award to the party itself, not to an agent and not from delivery of an unsigned copy. To consolidate the surrounding framework, revisit the Arbitration and Conciliation Act hub and the related notes on agreement, reference and interim relief.
Frequently asked questions
What does Section 3 of the Arbitration and Conciliation Act, 1996 deal with?
Section 3 lays down when a written communication is deemed to have been received in an arbitration. Unless the parties agree otherwise, a communication is deemed received on delivery to the addressee personally or at his place of business, habitual residence or mailing address; and if none of those can be found after reasonable inquiry, on dispatch by registered letter (or another mode that records the delivery attempt) to the last known address. It does not apply to communications in court proceedings.
Does Section 3 require actual receipt of the communication?
No. Section 3 operates as a deeming fiction. A communication is treated as received once it is delivered at a recognised location, regardless of whether the addressee actually read or acknowledged it. This prevents a party from stalling arbitration by refusing to accept post. The presumption is, however, rebuttable: a party can show that delivery could not in fact have been effected despite the statutory conditions being apparently met.
When can a notice be sent to the last known address under Section 3?
Only when the addressee's place of business, habitual residence and mailing address cannot be found after making a reasonable inquiry. The sender must then send the communication to the last known address by registered letter or any other means that provides a record of the attempt to deliver. The fallback is not available as a matter of convenience; the ‘reasonable inquiry’ condition must genuinely be satisfied first.
How does Section 3 affect the limitation period for challenging an award?
Section 31(5) requires delivery of a signed copy of the award to each party, and Section 3 determines when that delivery is complete. In State of Maharashtra v. Ark Builders Pvt. Ltd., (2011) 4 SCC 616, the Supreme Court held that the three-month limitation under Section 34(3) runs only from receipt of a signed copy of the award by the party, as delivery is a matter of substance, not mere formality.
Is service of an award on a party's advocate valid under Section 3 and Section 31(5)?
No. In Benarsi Krishna Committee v. Karmyogi Shelters Pvt. Ltd., (2012) 9 SCC 496, the Supreme Court held that ‘party’ in Section 31(5) means the party to the arbitration agreement itself. Service of the signed award on the party's agent or advocate does not satisfy Section 31(5), and the limitation period under Section 34(3) does not begin to run until the party itself receives the signed copy.
Does Section 3 apply to court proceedings connected with arbitration?
No. Sub-section (3) expressly excludes written communications in respect of proceedings of any judicial authority. Service in court proceedings — such as a Section 9 application for interim measures, a Section 11 appointment petition, or a Section 34 challenge — is governed by the Code of Civil Procedure, 1908, and the relevant court rules, not by the deeming fiction in Section 3.