Kagaznama

Supplementary Agreement to Sell

At a glance

Price
Free
Stamp duty
Chargeable as an agreement not otherwise provided for (Art.5, Sch.I-A, Punjab/Chandigarh) — doesn't re-stamp the principal agreement.
Registration
Not registrable merely for earnest money.
Witnesses
Two witnesses are recommended as execution evidence for substantial agreements; doesn’t replace mandatory registration.

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Also called

  • supplementary sale agreement
  • supplemental agreement to sell
  • supplementary property agreement

When you need it

For adding or clarifying terms to an already-signed agreement to sell, without rewriting it. Identify the original agreement precisely, list clauses affected, state the supplementary wording, and set a priority rule so both instruments read together.

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If it touches possession, registration or consideration, assess this document's own stamp/registration treatment rather than assuming the original formality covers it. Gives one traceable record of the exact change, instead of ambiguous WhatsApp/email amendments.

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You can fill this one in on this site, and read the whole draft on screen before you decide anything about it. It is a carefully drafted template; it is not advice about your own facts.

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See stamp duty, registration and witnesses

What follows is written for Punjab and Chandigarh. It states the position there rather than describing how it varies, so the amounts below are the ones that apply — worth confirming at the sub-registrar’s office, because rates change. If the property is anywhere else in India, none of this is yours.

Stamp duty

Chargeable as an agreement not otherwise provided for (Art.5, Sch.I-A, Punjab/Chandigarh) — doesn't re-stamp the principal agreement. Raising earnest money under a 5%-duty Chandigarh Item-22 agreement: check the increase's duty with the Sub-Registrar; giving the buyer possession: the Collector may treat it as a conveyance. Stamp at signing (s.17) — unstamped, inadmissible until duty+penalty paid (s.35).

Registration

Not registrable merely for earnest money. But a s.53A (TP Act) contract to transfer for consideration IS compulsory under Registration Act s.17(1A); RERA s.13 may also apply.

Notarisation

Doesn't substitute for compulsory registration or create enforceability where none exists.

Witnesses

Two witnesses are recommended as execution evidence for substantial agreements; doesn’t replace mandatory registration.

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Sample preview — placeholder answers, not your data

SUPPLEMENTARY AGREEMENT TO SELL

Harpreet Singh, of House 118, Sector 35-A, Chandigarh, and Aarav Sharma, of House 211, Sector 21, Panchkula, are the parties to this instrument.

Seller contact: +91 XXXXX XXXXX / harpreet@example.com. Buyer contact: +91 XXXXX XXXXX / aarav@example.com.

  1. 1. ORIGINAL AGREEMENT

The parties refer to Agreement to Sell dated 01 August 2026 concerning House 52, Sector 8, Chandigarh.

This supplementary agreement is executed on 1 April 2026 for Adding transaction conditions.

  1. 2. CLAUSES AFFECTED

Affected clauses/schedules: Clauses 4, 7 and Schedule B..

  1. 3. SUPPLEMENTARY TERMS

Seller to provide loan closure NOC and original chain documents at least 7 days before registration.

  1. 4. PRICE AND COMPLETION

Price status: Sale consideration remains unchanged. Completion-date status: Completion date remains unchanged.

  1. 5. PRIORITY AND RATIFICATION

Conflict rule: This supplementary agreement prevails only for the clauses expressly changed. Unchanged terms: All unchanged terms are ratified and continue.

  1. 6. FORMALITY

Registration/formality: Supplement will follow the same registration treatment required by its own legal effect and the original transaction.

Section 54 of the Transfer of Property Act, 1882 treats a contract for sale as an agreement that a sale will take place on settled terms; the contract does not by itself create an interest in or charge on the property. The final transfer of ownership must occur through the legally required conveyance/registered instrument.

The supplementary instrument does not silently replace the whole bargain; only the terms expressly changed or clarified are affected.

3A. DELTA-ONLY DRAFTING

This supplementary agreement is intended to be read with the original agreement, not as a second complete sale contract. Each amendment should identify the old clause or subject and the exact new obligation. If a change cannot be understood without reconstructing several emails, it should be rewritten as a complete replacement clause. Matters not identified as changed should not be inadvertently re-opened.

3B. DOCUMENT AND APPROVAL CONDITIONS

Where the supplement adds a lender NOC, authority permission, title document or other condition, it should state who must obtain it, whether the condition is for the buyer’s benefit, the deadline and the consequence of non-fulfilment. A vague promise to “provide all documents” does not tell the parties whether completion can be withheld for one missing record.

4A. INTERACTION WITH COMPLETION

If the supplement changes a pre-completion deliverable but not the completion date, both facts should be explicit. If compliance becomes impossible by the existing date, the parties should use the extension instrument rather than assume that this supplement automatically extends time. This prevents inconsistent dates across the transaction file.

Questions about this document

Does the Supplementary Agreement to Sell need stamp paper or stamp duty in Punjab and Chandigarh?

Chargeable as an agreement not otherwise provided for (Art.5, Sch.I-A, Punjab/Chandigarh) — doesn't re-stamp the principal agreement.

See the full position on stamp duty, registration and witnesses
Does the Supplementary Agreement to Sell need registration in Punjab and Chandigarh?
What does the Supplementary Agreement to Sell cost on Kagaznama?

Free.

Documents are free. Kits are free during our launch.

Does the Supplementary Agreement to Sell need witnesses?

Two witnesses are recommended as execution evidence for substantial agreements; doesn’t replace mandatory registration.

See the full position on stamp duty, registration and witnesses

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