← INSIGHTS / FINANCE
FINANCE

Buying a business? The due diligence checklist

BY VIENTIA ADVISORY · LAST CHECKED 1 SEP 2026 · 6 MIN READ

Before you read: every business is different, and this article explains general method, not advice for your case. For a number or a plan you can act on, message us - real answer within 48 hours.
THE SHORT ANSWER

Due diligence is verifying everything the seller claims before money moves, in four piles: financial, legal, operational, people. The goal is not to kill the deal; it is to price what you are actually buying.

The four piles

Financial

  • Revenue traced to bank statements
  • Real margins after owner perks
  • Debts, taxes and what is owed

Legal

  • Licences valid and transferable
  • The lease survives the sale
  • Contracts, disputes, actual asset ownership

Operational

  • Where revenue really comes from
  • Supplier and customer concentration
  • What breaks when the owner leaves

People

  • Who really runs the place
  • Who stays after the sale
  • What they are owed
WHERE SURPRISES HIDE - ILLUSTRATIVE SHARE OF DEAL PROBLEMS
Untraceable revenue
most common
Lease and licence issues
frequent
Departing key people
underrated

Illustrative pattern from small-business deals. The money trail is always the first place to dig.

The Laos layer

Records here are often informal, which does not mean the business is bad; it means verification leans harder on bank statements, supplier confirmations and observation. And ownership questions (land use rights, licence transferability, who is really on the enterprise certificate) deserve double attention before any deposit moves.

Common questions

What is due diligence when buying a business?

The organized verification of everything the seller claims: financials, legal standing, operations and people, done before money moves.

What is the biggest red flag when buying a small business?

Revenue that cannot be traced to bank statements. If the money trail and the story disagree, believe the money trail.

How long does due diligence take for a small business?

Two to six weeks for a small business, depending on how organized the records are. Rushing it is how surprises get purchased.

Buying something in Laos?

Verification and valuation before your money moves. Free scoping call.

Message us