Due diligence checklist for buying a business in Singapore

Published Monday 8 June 2026

Table of contents

• What is due diligence when buying a business?
• Why is due diligence important?
• Steps to buying a business in Singapore
• Essential due diligence checklists
• Key documents to review during due diligence
• How to value a business before buying
• How to finance a business acquisition
• Tips for successful due diligence
• Advantages and disadvantages of buying a business
• Manage your new business finances with Xero
• FAQs on buying a business

Key takeaways

• Due diligence is the process of verifying a business's financial, legal and operational health before you commit to buying it. Skipping it puts your investment at serious risk.
• Buying a business in Singapore involves several structured steps, from defining your goals and finding a target to completing regulatory filings with the Accounting and Corporate Regulatory Authority (ACRA).
• A thorough due diligence checklist covers five areas: financial records, legal standing, operations, market position and regulatory compliance.
• Acquired businesses have a 70–80% five-year survival rate, compared with roughly 51% for startups, making buying an existing business a lower-risk path to ownership.

What is due diligence when buying a business?

Due diligence is a structured investigation into a business's financial, legal and operational condition before you finalise a purchase. It confirms whether the business is worth what the seller is asking and surfaces risks that could affect your return.

Think of it as your chance to look under the bonnet. You review financial statements, contracts, licences, customer data and employee arrangements. The goal is to verify every claim the seller has made and identify anything that could create problems after settlement.

In Singapore, due diligence also covers regulatory requirements specific to the market, such as compliance with the Inland Revenue Authority of Singapore (IRAS) tax obligations and proper registration with ACRA.

Why is due diligence important?

Due diligence protects you from overpaying, inheriting hidden liabilities or buying a business that can't sustain itself. Without it, you're relying on the seller's word alone.

An estimated 70–80% of business sales fail to complete, often because issues surface too late in the process. Thorough due diligence early on reduces the chance of a collapsed deal and the sunk costs that come with it.

Poor due diligence can lead to serious consequences. You might discover undisclosed debts, pending lawsuits, tax arrears or contracts that aren't transferable. Each of these can erode the value of the business or create legal exposure for you as the new owner.

It also gives you negotiating power. When you understand the true condition of the business, you can adjust your offer, request warranties from the seller or walk away entirely.

Steps to buying a business in Singapore

Buying a business in Singapore follows a clear sequence. Each step builds on the last, so it pays to be methodical from the start.

1. Define your goals and criteria

Start by getting clear on what you want. Consider the industry, business size, location and level of involvement you're after. Set a realistic budget that includes the purchase price, working capital and professional fees.

Writing down your criteria early helps you filter opportunities quickly and avoid wasting time on businesses that don't fit.

2. Find a target business

Search for businesses through online marketplaces, business brokers, industry networks or direct approaches. In Singapore, platforms such as BizBuySell and local brokerage firms list businesses for sale across a range of sectors.

Ask your accountant, lawyer or Xero advisor for referrals. Professional networks often surface opportunities before they hit the open market.

3. Value the business

Once you've identified a target, work out what it's worth. Use one or more valuation methods, such as asset-based, earnings-based or market comparison approaches. The valuation section below covers these in detail.

An independent valuation gives you a solid foundation for your offer and helps you avoid overpaying.

4. Make an offer

Submit a Letter of Intent (LOI) or Heads of Agreement outlining the proposed purchase price, key terms and conditions. This document is typically non-binding but signals serious intent.

Include conditions such as satisfactory due diligence, financing approval and regulatory clearance. The LOI also usually includes a period of exclusivity so you can investigate without competition.

5. Conduct due diligence

This is where you verify everything. Use the checklists below to review the business's finances, legal standing, operations, market position and compliance. Engage an accountant and lawyer to help you work through the detail.

Set a clear timeline for due diligence, typically four to eight weeks for a small to mid-sized business.

6. Negotiate the Sale and Purchase Agreement

The Sale and Purchase Agreement (SPA) is the binding contract. It sets out the purchase price, payment terms, warranties, indemnities and conditions precedent. Your lawyer should draft or review this document.

Use your due diligence findings to negotiate adjustments. If you've uncovered risks, you can request price reductions, seller indemnities or escrow arrangements.

7. Complete the acquisition

On completion, you transfer the funds and the seller transfers ownership. For a company purchase, this means transferring shares. For an asset purchase, you transfer individual assets and contracts.

Lodge the necessary filings with ACRA to update the company's records. Notify IRAS of any changes to business registration or ownership structure. Set up your accounting systems from day one to keep your finances organised.

Essential due diligence checklists

A structured checklist keeps your due diligence on track and ensures you don't miss critical areas. Here are the five key categories to cover.

Financial due diligence

Financial due diligence confirms that the numbers the seller presents are accurate and sustainable. Around 25% of acquisition failures stem from poor financial documentation, so this step deserves close attention.

Your financial due diligence checklist should include:

• Profit and loss statements for the past three to five years
• Balance sheets and cash flow statements
• Tax returns and any outstanding tax obligations with IRAS
• Accounts receivable and accounts payable ageing reports
• Revenue trends, seasonality and customer concentration
• Owner compensation and personal expenses run through the business
• Debt schedules, including loans, leases and guarantees

Look for inconsistencies between reported profits and actual cash flow. If the business uses Xero Accounting Software, you can review real-time financial data directly from the platform.

Legal due diligence

Legal due diligence uncovers obligations and risks that could transfer to you as the new owner.

Check the following:

• Business structure and ACRA registration status
• Shareholder agreements and company constitution
• Pending or past litigation, disputes or regulatory actions
• Material contracts with customers, suppliers and landlords
• Employment contracts and any outstanding employee claims
• Intellectual property ownership and registrations

Operational due diligence

Operational due diligence assesses whether the business can function without the current owner. Around 20% of acquisition failures result from excessive owner dependency.

Review these areas:

• Key staff roles, retention risk and employment terms
• Standard operating procedures and documented processes
• Supplier relationships and contract terms
• Technology systems, software licences and IT infrastructure
• Premises condition, lease terms and fit-out ownership
• Customer service workflows and quality controls

Pay close attention to how dependent the business is on the current owner's personal relationships, skills or reputation. If the owner is the business, the transition will be harder.

Market position due diligence

Market position due diligence helps you understand whether the business can sustain its revenue after the sale. Roughly 35% of acquisition failures trace back to unrealistic valuations driven by an inflated view of market position.

Assess the following:

• Market size, growth trends and competitive landscape
• The business's market share and competitive advantages
• Customer base diversity and loyalty
• Brand reputation and online reviews
• Industry risks, regulatory changes or technology disruption

Regulatory and compliance due diligence

Regulatory due diligence is especially important in Singapore, where businesses must comply with sector-specific rules and government requirements.

Verify the following:

• All required licences and permits are current and transferable
• Compliance with the Employment Act and Central Provident Fund (CPF) contributions
• Goods and Services Tax (GST) registration and filing history
• Data protection compliance under the Personal Data Protection Act (PDPA)
• Environmental, health and safety obligations
• Industry-specific regulations, for example, food safety, financial services or education

Key documents to review during due diligence

Beyond checklists, you need to physically review and verify specific documents. Here are the key categories.

Financial and tax documents

Request and review these records carefully:

• Audited or management accounts for the past three to five years
• Corporate tax returns and notices of assessment from IRAS
• GST returns and correspondence
• Bank statements for the past 12 months
• Aged debtor and creditor schedules
• Loan agreements, overdraft facilities and security documents

Equipment, assets and stock

Confirm what you're actually buying:

• Fixed asset register with current valuations
• Equipment maintenance records and warranties
• Stock inventory with ageing analysis
• Vehicle and machinery ownership or lease documents
• Property or premises ownership and lease agreements

Legal documents

Have your lawyer review these as a priority:

• Certificate of incorporation and ACRA BizFile profile
• Company constitution and shareholder agreements
• Material contracts (customers, suppliers, distributors)
• Lease and tenancy agreements
• Insurance policies and claims history
• Litigation records and regulatory correspondence

Operations documents

Get a clear picture of how the business runs day to day:

• Organisational chart and employee handbook
• Employment contracts and CPF contribution records
• Standard operating procedures
• Customer and supplier lists
• Technology and software licence agreements

Intellectual property documents

Protect the intangible assets that may drive the business's value:

• Trademark registrations and applications
• Patent and design registrations
• Domain name ownership records
• Licence agreements for third-party IP
• Non-disclosure and non-compete agreements with staff

How to value a business before buying

Getting the valuation right is one of the most important steps. There are three common approaches, and you may want to use more than one to cross-check your result.

Asset-based valuation

This method calculates the business's net asset value: total assets minus total liabilities. It works best for asset-heavy businesses such as manufacturing, property or retail with significant stock.

Make sure assets are valued at fair market value, not book value. A piece of equipment fully depreciated on the books might still hold real value.

Earnings-based valuation

Earnings-based methods value the business on its ability to generate future profit. The most common approach uses a multiple of the Seller's Discretionary Earnings (SDE) or Earnings Before Interest, Tax, Depreciation and Amortisation (EBITDA).

Multiples vary by industry, size and growth outlook. In Singapore, small business multiples typically range from two to four times annual earnings, though this varies widely by sector.

Market comparison valuation

This approach compares the business to similar businesses that have recently sold. It's useful as a reality check, but comparable data can be hard to find for private businesses.

Business brokers and industry reports can help you source comparable transaction data. Combining this with an earnings-based approach gives you a more rounded picture.

How to finance a business acquisition

Most buyers use a combination of funding sources. Here are the main options available in Singapore.

Bank loans

Commercial banks in Singapore offer business acquisition loans, typically secured against the assets of the business being purchased. You'll need a solid business plan, financial projections and a personal guarantee in most cases.

Seller financing

In seller financing, the seller agrees to receive part of the purchase price over time. This can work well when the seller is confident in the business's future and wants to support a smooth transition.

It also aligns the seller's interests with yours during the handover period. Typical arrangements involve 20–40% of the price paid on completion, with the remainder over one to three years.

Personal savings and equity

Using your own funds reduces borrowing costs and shows lenders you have skin in the game. Most banks expect buyers to contribute at least 20–30% of the purchase price as equity.

Government grants and schemes

Enterprise Singapore offers grants and financing support for businesses looking to grow through acquisitions. The Enterprise Financing Scheme, for example, provides government-backed risk-sharing on qualifying loans.

Check eligibility criteria early, as these schemes often require the buyer to meet specific conditions around business registration, ownership and industry.

Tips for successful due diligence

Knowing what to check is half the job. How you approach due diligence matters just as much. Here are practical tips to help you get it right.

• Set a clear timeline and stick to it. Four to eight weeks is typical for a small business. Dragging it out increases the risk of deal fatigue on both sides.
• Build your professional team early. Engage an accountant, lawyer and business advisor before you start. A Xero advisor can help you review the business's financial data efficiently.
• Create a secure data room. Ask the seller to provide all documents in one central, organised location. This speeds up the review and reduces back-and-forth.
• Talk to customers, suppliers and staff where possible. Documents tell part of the story. Conversations with key stakeholders fill in the gaps.
• Verify everything independently. Don't rely solely on information the seller provides. Cross-check financial data against bank statements, tax returns and third-party records.
• Document your findings as you go. Keep a running log of issues, questions and follow-ups. This becomes your negotiation checklist when you reach the SPA stage.
• Trust your instincts. If something feels off, dig deeper. It's better to walk away from a deal than to discover a problem after settlement.

Advantages and disadvantages of buying a business

Buying an existing business offers a different risk profile from starting one from scratch. Here's a balanced look at both sides.

Advantages

Buying a business gives you a head start. You benefit from an established customer base, existing revenue, trained staff and proven systems.

• A 70–80% five-year survival rate, compared with roughly 51% for startups
• Immediate cash flow from day one, rather than months or years of building revenue
• Established supplier relationships and negotiated terms already in place
• Brand recognition and market presence that would take years to build
• Existing staff with operational knowledge and customer relationships

Disadvantages

Buying a business also comes with risks and trade-offs you should consider carefully.

• Higher upfront cost compared with starting from scratch
• Risk of inheriting hidden liabilities, debts or legal issues
• Existing staff may resist new ownership or management changes
• The business may be tied to the previous owner's reputation or relationships
• Systems, processes or technology may need significant investment to update

Manage your new business finances with Xero

Once you've completed the acquisition, getting your finances in order from day one is essential. Xero Accounting Software gives you a clear, real-time view of your cash flow, expenses and profitability, all in one place.

You can automate bank reconciliation, set up invoice reminders and track bills as they come in. Xero also connects with your accountant or bookkeeper, so you can collaborate on the numbers without passing spreadsheets back and forth.

Whether you're reviewing the books during due diligence or managing your new business post-acquisition, Xero helps you stay on top of your finances with less manual admin, and you can get one month free to try it out.

FAQs on buying a business

Here are some frequently asked questions about buying a business in Singapore.

Can foreigners buy a business in Singapore?

Yes. Foreigners can buy a business in Singapore, but they must register with ACRA and may need an Employment Pass or EntrePass to manage the business locally. Some industries have additional foreign ownership restrictions.

How long does the process of buying a business take?

The process typically takes three to six months from the initial search to completion. The due diligence phase alone usually requires four to eight weeks, depending on the complexity of the business.

Where can you find businesses for sale in Singapore?

You can find businesses through online marketplaces, business brokers, industry associations and professional networks. Your accountant, lawyer or business advisor may also know of opportunities that aren't publicly listed.

Do you need a lawyer when buying a business?

It's strongly recommended. A lawyer reviews the Sale and Purchase Agreement, checks for legal liabilities and ensures the transfer of ownership is properly documented. The cost of legal advice is small compared with the risk of an issue surfacing after the deal closes.

What are the advantages of buying an existing business?

Buying an existing business lets you skip the high-risk startup phase and step into a proven operation. In Singapore, established businesses also offer continuity of GST registration, existing supplier contracts and local market knowledge that would take years to build independently.

How much does it cost to buy a business in Singapore?

Costs vary widely depending on the industry, size and profitability of the business. Small businesses in Singapore can range from tens of thousands to several million dollars. Factor in professional fees, stamp duty and working capital on top of the purchase price.