Documents Required to Buy a Business in India: Complete 2026 Guide

The paperwork side of buying a business is where most deals slow down, fall apart, or — if the buyer wasn't careful — create problems that surface months after closing. Knowing exactly which documents you need, when you need them, and what to look for in each one is the difference between a clean acquisition and one you're still untangling two years later. This guide covers every document required to buy a business in India in 2026.

 The documents required to buy a business in India fall into five categories — pre-deal documents (NDA, LOI), financial documents (P&L, GST returns, bank statements), legal documents (lease, licences, IP registrations), tax documents (IT returns, TDS records), and closing documents (Business Transfer Agreement, Deed of Assignment, employee transfer letters). Each category has specific items that must be verified before the deal closes.

Why Document Collection Order Matters

Most buyers approach document collection as a single dump — "send me everything." That leads to weeks of back-and-forth, a disorganised data room, and no clear sense of what's been verified and what hasn't.

The better approach is phased. Request lightweight pre-deal documents first to confirm the deal is worth pursuing. Then go deeper with financial and legal documents only after an LOI is signed. Closing documents come last, once due diligence is complete and price is agreed.

This structure saves time, protects confidentiality, and prevents you from spending CA and legal fees on a business you'd have walked away from in week one.

Phase 1 — Pre-Deal Documents

These are the documents that establish the framework of the deal before money or detailed information changes hands.

Non-Disclosure Agreement (NDA)

The NDA — also called a Confidentiality Agreement — is always the first document. It protects the seller's business information and stops you from sharing what you learn with competitors or using it if the deal doesn't go through.

A properly drafted NDA covers what information counts as confidential, how long the obligation lasts (typically 2–3 years), what happens to documents if the deal falls through, and who in your team is covered by it.

Don't use a generic template. Get it drafted or reviewed by a lawyer who has done M&A work. The standard one-page templates have gaps that matter specifically in a business acquisition context.

Information Memorandum or Business Teaser

After the NDA is signed, the seller typically shares a business overview — either a brief teaser covering sector, revenue range, and asking price, or a full Information Memorandum with a P&L summary, business description, and asking rationale.

Read it critically. Every IM is structured to present the business favourably. Your job at this stage is to identify what questions the document raises, not just what it answers.

Letter of Intent (LOI)

Once you've reviewed the IM and had initial conversations, the LOI is your formal — but non-binding — expression of intent. A well-drafted LOI covers the proposed acquisition price and payment structure, an exclusivity period (typically 30 to 45 days) during which the seller cannot negotiate with other buyers, conditions precedent for the deal to close, and the governing law and dispute resolution mechanism.

The LOI is non-binding on price but binding on exclusivity. Sign it only when you're genuinely committed to completing due diligence — the exclusivity period costs the seller real time.

Phase 2 — Financial Documents

This is the most critical category. Financial documents tell you what the business actually earns, what it costs to run, and whether the seller's claims hold up against verified numbers.

Core Financial Documents to Request

• Audited financial statements — 3 years: P&L, balance sheet, and cash flow statement for the last 3 financial years. If the business is not audited, ask for CA-certified accounts. Never accept unverified, self-prepared accounts as primary evidence.
• GSTR-1 and GSTR-3B — 24 months: The single most important financial document in Indian business acquisitions. Reconcile output in GSTR-1 against revenue declared in P&L. Any significant, unexplained gap means one of the two numbers is wrong.
• Bank statements — 24 months, all accounts: Request statements for every bank account the business operates — current accounts, OD accounts, and any accounts in the names of sister concerns if they are operationally connected. Look for revenue consistency and unexplained large transactions.
• Accounts receivable aging report: Full list of outstanding customer payments categorised by age. Receivables beyond 90 days in most sectors carry real collection risk.
• Accounts payable schedule: What the business owes to vendors and for how long. Significantly overdue payables signal cash flow pressure that may not be visible in the P&L.
• Fixed asset register: Every physical asset the business owns, with purchase date, original cost, and current book value. Cross-reference against your site visit — assets in the register should actually exist.
• Outstanding loan and credit facility schedules: All business loans, working capital limits, OD facilities, and equipment finance — with outstanding balance, interest rate, EMI amount, and repayment timeline. Also ask whether any personal guarantees from the owner are secured against business assets.
• Inventory valuation report: Book value of inventory, ideally cross-verified by a physical count. Ask for the last physical stock count report and the methodology used for slow-moving stock.

Phase 3 — Legal Documents

Legal documents determine whether you can actually keep operating the business after you buy it. A financially healthy business with a bad lease or unregistered IP is a trap, not an opportunity.

Property and Premises

• Full lease agreement — every page: Not a summary. The complete original agreement with all addendums and renewal letters. Key clauses: remaining term, renewal mechanism, rent escalation formula, subletting rights, and — most critically — whether the landlord has any right to terminate or renegotiate on change of ownership.
• Proof of landlord's ownership: The landlord giving the lease should actually own the property. Request a copy of the title deed or sale deed and verify it matches the name on the lease. Also check for any charges or mortgages on the property.
• Property tax receipts: Confirm property tax is paid and current. Arrears can follow the premises even when the tenant changes.

Business Licences and Registrations

• Trade licence and Shops and Establishments certificate: Valid, current, and in the business entity's name — not the individual owner's name.
• GST registration certificate: Confirm the GSTIN matches the entity you are acquiring. In an asset purchase, you will need to transfer or cancel and re-register.
• FSSAI licence (food businesses): Category type — basic, state, or central — validity date, and the name of the licence holder. Transfer must be initiated within 30 days of ownership change.
• Factory licence (manufacturing): Categories and schedule covered, inspector's last visit report, and any pending notices.
• Drug licence (pharma and medical): Retail or wholesale category, validity, and competent person credentials if applicable.
• Fire safety NOC: Current fire department certificate for the premises.
• Pollution Control Board clearance (manufacturing): Both Consent to Establish and Consent to Operate must be valid.
• Import Export Code (if applicable): IEC in the company's name with clean DGFT compliance history.

Intellectual Property

• Trademark registration certificates: Check the registered proprietor name on the Trademark Registry certificate. If it is in the founder's personal name, get a formal Deed of Assignment as part of the deal.
• Domain name registration details: The registrar account, registered owner name, and admin email. Domain transfer must be part of the closing documentation.
• Software and technology ownership: For tech businesses — who owns the source code? Is copyright registered in the company's name or the founder's?
• Social media account details: Username, registered email, and phone number for all active business accounts. These are often linked to the founder's personal credentials and need explicit transfer.

Contracts and Agreements

• Top 5 client contracts: Full agreements — check the assignability clause. Many enterprise contracts require client consent for transfer to a new owner.
• Top 5 vendor contracts: Check whether the vendor can terminate on change of ownership.
• Employment contracts for key staff: Notice periods, non-compete clauses, and confidentiality agreements.
• Distributor or franchise agreements (if applicable): Territory rights, minimum offtake commitments, and change-of-control provisions.

Corporate Documents — Share Purchase Only

• Certificate of Incorporation and PAN card of the company
• Memorandum and Articles of Association (MOA and AOA)
• Shareholder register and share certificates
• Board resolutions authorising the sale
• MCA filings — ROC returns for the last 3 years — verified independently on the MCA portal
• Shareholder agreement — check for pre-emption rights or drag-along clauses that could complicate the share transfer

Phase 4 — Tax Documents

Tax liabilities do not disappear when you buy a business — especially in a share purchase. These documents help you understand what has been filed, what has been paid, and what might still come.

• Income tax returns — 3 years: Filed ITRs for the business entity with ITR-V acknowledgment receipts. verify ITR acknowledgments on the income tax portal.
• Form 26AS and AIS: Annual Information Statement and Tax Credit Statement — shows TDS deducted on payments received. Compare against declared revenue for an independent cross-check.
• TDS returns — 24 months: Form 24Q (salary TDS) and Form 26Q (non-salary TDS) — confirm deductions are being made and deposited correctly and on time.
• GST compliance certificate or CA-certified GST summary
• Pending tax demands or assessment orders: Ask the seller to disclose all pending income tax notices, scrutiny assessments, appeals, and GST show-cause notices. Independently verify on the tax portal where portal access allows.
• Professional tax registration and payment receipts — especially relevant in Maharashtra, Karnataka, and West Bengal where enforcement is active.

Phase 5 — Closing Documents

These are the documents that actually transfer the business. Draft and sign them only after due diligence is complete and price is finalised. They are the hardest documents to unwind after signing.

Business Transfer Agreement (BTA)

The primary legal document in any Indian business acquisition. A properly drafted BTA must cover the complete schedule of assets being transferred, liabilities explicitly assumed by the buyer and those remaining with the seller, representations and warranties from the seller, indemnity provisions if a warranty is breached post-closing, the payment schedule including any deferred payments or earnout structure, a non-compete clause preventing the seller from starting or joining a competing business for a defined period, transition support obligations, and the dispute resolution mechanism.

Get the BTA drafted by an M&A lawyer — not a general commercial lawyer, and not a CA. The BTA is the document you rely on when something goes wrong post-closing. It needs to be drafted by someone who has actually dealt with post-closing disputes.

Share Purchase Agreement — Share Purchases Only

If you are buying the company rather than its assets, the Share Purchase Agreement replaces or supplements the BTA. It additionally covers share valuation, transfer restrictions, tax warranties, and pre-closing conditions. It is a significantly more complex document and almost always requires specialist M&A legal counsel.

Deed of Assignment

Used to formally transfer specific assets that require separate legal assignment — trademarks, domain names, key contracts, and lease agreements where landlord consent is required. Each assignment needs to be documented separately, stamped appropriately, and registered where required.

Employee Transfer Letters

Under the Industrial Disputes Act and relevant state labour laws, employees must be formally notified of the ownership change. Transfer letters should state the new employer name, the date of transfer, confirmation that service continuity is preserved, and that existing compensation terms remain unchanged unless separately negotiated. Get these signed and acknowledged before the handover date.

Licence Transfer Applications

This is the category most buyers do not prepare for in advance, and it's the one that creates operational disruption right after closing. Applications need to be filed for FSSAI — within 30 days — trade licence name change with the local municipal body, GST amendment or fresh registration, factory licence transfer with the Inspector of Factories, drug licence fresh application in the buyer's name, and MIDC plot transfer which takes 3 to 6 months and should be initiated well before operational handover.

Sector-Specific Additional Documents

F&B Businesses

• Zomato and Swiggy monthly payout statements — Restaurant for sale in India
• Liquor licence — type, validity, and state excise department transfer requirements
• Health inspection reports for the last 2 years
• Menu IP documentation if the restaurant has proprietary recipes or brand identity

Manufacturing Businesses

• MIDC lease agreement and plot allotment letter
• BIS certification documents if products are BIS-marked
• Quality certifications — ISO, IATF, or customer-specific approvals
• Equipment insurance policies — transferable or to be replaced

Tech and SaaS Businesses

• Source code repository access details and ownership documentation
• All SaaS vendor agreements — cloud infrastructure, APIs, payment gateways
• Customer data processing agreements under the DPDP Act 2023
• Software escrow agreement if any exists with enterprise clients

Documents the Buyer Needs to Provide

This section gets skipped in most guides. Sellers need to verify who they are dealing with — particularly in deals involving regulated licences or sensitive client relationships.

• KYC documents: PAN card, Aadhaar, and address proof of the buyer — individual or entity
• Company incorporation documents: If buying through a company — Certificate of Incorporation, MOA and AOA, board resolution authorising the acquisition
• Proof of funds or bank pre-approval letter: Sellers with serious businesses often ask for this before sharing detailed financials — it confirms you can actually close the deal
• Competent person credentials: Required for drug licence transfers — a registered pharmacist or qualified person in the buyer's organisation
• Signed NDA: Always the buyer's first document

Common Document Mistakes and What They Cost

Master Document Checklist — All Five Phases

Pre-Deal Documents

• Signed NDA or Confidentiality Agreement
• Information Memorandum or Business Teaser
• Letter of Intent with exclusivity clause