Last updated: September 2026
Singapore has hundreds of licensed audit firms, and the honest answer to “which one is best” is that it depends on what you need audited and how complex your business is. A listed group with subsidiaries in four countries and a twelve-person company filing its first set of audited accounts are not shopping for the same firm.
This guide groups Singapore’s leading audit firms into three tiers — Big 4, mid-tier firms with international networks, and SME-focused specialists — and sets out who each tier actually suits. Rather than ranking ten firms against each other from best to worst, which tells you very little, the aim is to help you shortlist the two or three worth asking for a proposal.
Key Takeaways
- The Big 4 — PwC, KPMG, Deloitte and EY — handle the majority of listed-company and multinational audit work in Singapore.
- Mid-tier firms with international networks cover most of the ground in between, and matter most when you have overseas subsidiaries needing coordinated group reporting.
- SME-focused firms are usually the better fit for private, owner-managed companies, where partner attention and turnaround matter more than global footprint.
- For most Singapore SMEs a statutory audit runs between S$1,000 and S$12,000 a year, driven by size and complexity rather than the firm’s brand.
- Every firm below is registered with ACRA as a Public Accounting Entity. That registration — not the size of the firm — is what makes a statutory audit opinion valid.
How We Built This List
We grouped firms by the kind of mandate they are built to serve, not by revenue or headcount. Four things shaped the list:
- ACRA registration as a Public Accounting Entity, the legal prerequisite for signing a statutory audit opinion in Singapore.
- Depth of the audit practice specifically, as distinct from tax, advisory or corporate secretarial work.
- The client profile each firm typically serves — listed groups, regional mid-caps, or owner-managed SMEs.
- International network membership, which matters if you have overseas subsidiaries and need group reporting coordinated across jurisdictions.
We have deliberately not ranked these firms 1 to 10 overall. A firm that is the right answer for a listed group is the wrong answer for a fifteen-person company, and the reverse is equally true. If you want the full evaluation framework rather than a shortlist, we set it out separately in the seven criteria that actually matter when choosing an audit firm. Firm names below are current as of 2026 — several Singapore practices have rebranded in recent years and older lists still carry their previous names.
The Shortlist at a Glance
| Firm | Tier | International network | Best suited to |
|---|---|---|---|
| PwC Singapore | Big 4 | PwC Global | Listed companies, IPO candidates, complex cross-border groups |
| KPMG Singapore | Big 4 | KPMG International | Regulated industries, financial institutions, government-linked entities |
| Deloitte Singapore | Big 4 | Deloitte Global | Large companies wanting audit alongside consulting |
| EY Singapore | Big 4 | EY Global | ESG and sustainability reporting, technology-sector groups |
| RSM Singapore | Mid-tier | RSM International | Companies expanding across ASEAN, groups outgrowing a boutique firm |
| BDO Singapore | Mid-tier | BDO International | Mid-caps and larger SMEs wanting network reach without Big 4 fees |
| Foo Kon Tan | Mid-tier | HLB International | Family businesses and mid-caps wanting partner-led attention |
| Baker Tilly | Mid-tier | Baker Tilly International | Companies in transition — M&A, restructuring, valuations |
| Ackenting Group | SME-focused | IR Global | SMEs and Singapore subsidiaries needing a fixed-fee audit on a firm deadline |
| Precursor Assurance | SME-focused | — | SMEs wanting a dedicated audit firm separate from their accountant |
Tier 1: The Big 4
Between them, PwC, KPMG, Deloitte and EY audit most of Singapore’s listed companies and large multinationals. They are the right answer when your audit needs to satisfy a regulator, a stock exchange or an international parent — and an expensive answer when it does not.
PwC Singapore
PwC has the largest professional services presence in the country, with particular depth in deals and M&A advisory alongside its audit practice. Best for: listed companies, IPO candidates, and groups with complex international structures. Trade-off: minimum engagement sizes put it out of reach for most private SMEs.
KPMG Singapore
KPMG is strongest in regulated sectors — banking, insurance and government-linked work — with a well-regarded risk and compliance practice. Best for: financial institutions and regulated entities. Trade-off: the same fee floor applies.
Deloitte Singapore
Deloitte has the deepest consulting arm of the four locally, which is useful when audit sits alongside technology or transformation work. Best for: large companies wanting audit and consulting under one roof. Trade-off: its differentiation is in advisory rather than pure statutory audit.
EY Singapore
EY is known for technology consulting and for sustainability and ESG reporting. Best for: companies with ESG reporting obligations and technology-sector groups. Trade-off: most SMEs never need the capability they are built around.
Tier 2: Mid-Tier Firms with International Networks
This tier is where most growing Singapore companies land. These firms carry genuine audit depth and belong to global networks, so a subsidiary in Malaysia or Indonesia can be handled by a member firm rather than an unrelated local auditor — without Big 4 pricing. If you are weighing this tier against the Big 4 specifically, we compare them directly in mid-tier audit firm in Singapore vs Big 4.
RSM Singapore
RSM is the largest firm outside the Big 4 in Singapore and part of RSM International, with strong ASEAN coverage.
Best for: companies moving into regional operations and groups that have outgrown a boutique firm.
BDO Singapore
BDO is part of BDO International and runs a broad audit, advisory and restructuring practice.
Best for: mid-caps and larger SMEs wanting network reach at a more accessible fee level.
Foo Kon Tan
One of Singapore’s long-established homegrown practices and a member of HLB International, Foo Kon Tan is known for partner-led client relationships rather than delegation to junior staff.
Best for: family businesses and mid-caps that want senior attention throughout the engagement.
Baker Tilly
Baker Tilly (formerly Baker Tilly TFW) is a member of Baker Tilly International, with a notable restructuring, recovery and corporate advisory practice alongside audit.
Best for: companies in transition — M&A, restructuring, or needing valuation support.
SME-Focused Specialists
For a private Singapore company with straightforward operations, the constraints that actually bite are fee certainty, turnaround, and whether a partner ever looks at your file. Firms in this tier are built around those constraints rather than around global coverage.
Ackenting Group
Ackenting Group is an ACRA-registered mid-tier audit firm focused on SME and owner-managed company mandates. Audits are quoted on a fixed fee agreed upfront, and delivered under a 30-Day Completion Protocol — with new client intake deliberately capped at 100 a year so that turnaround holds through filing season.
AG has completed over 2,000 audit engagements, is a member of IR Global (1,000+ member firms across 155+ jurisdictions) and holds the OCBC Prestige Partner award. Alongside statutory work the firm handles full range of audit services in Singapore, like sales (GTO), grant, BCA, MCST, charities and group consolidation audits.
Best for: SMEs and Singapore subsidiaries of foreign parents that need a statutory audit completed against a firm deadline at a fee agreed in advance.
Precursor Assurance
Precursor Assurance is a Singapore assurance practice concentrating on statutory audit work for SMEs. Best for: companies that want a dedicated audit firm sitting separately from whoever does their bookkeeping. Trade-off: you will need a separate provider for accounting, tax and secretarial work.
Other Established Firms Worth Shortlisting
The ten above are the firms most Singapore companies end up comparing, but they are not the whole market. Also worth a look depending on your sector and size: Crowe Singapore, PKF-CAP, Forvis Mazars (formerly Mazars), Moore Stephens, CLA Global TS (formerly Nexia TS), Kreston David Yeung, Lo Hock Ling & Co and UHY Lee Seng Chan. ACRA’s public register of registered Public Accounting Entities is the authoritative and complete list.
Which Tier Fits Your Company?
| Your company | Likely tier | Typical annual statutory audit fee |
|---|---|---|
| Dormant company | SME-focused | S$1,000 – S$2,000 |
| Small company, simple operations | SME-focused | S$2,500 – S$5,000 |
| SME with revenue of S$5m–S$10m | SME-focused or mid-tier | S$5,000 – S$12,000 |
| Group with overseas subsidiaries | Mid-tier with international network | Scope-dependent |
| Listed company or IPO preparation | Big 4 | S$12,000 and up, often well above S$20,000 |
Ranges are market estimates from our 2026 statutory audit fee guide, not quotes. AG’s own statutory audit pricing starts at S$5,000 on a fixed-fee basis.
Five Questions to Ask Any Firm You Shortlist
- Is the fee fixed, and what falls outside it? Scope creep is the most common source of audit-fee disputes.
- Who actually does the fieldwork, and who signs off? A partner’s name on the proposal does not always mean a partner on the engagement.
- What turnaround will you commit to in writing? The industry standard is four to eight weeks after complete documentation; some firms commit to less.
- Have you audited companies in my sector before? Sector familiarity shortens fieldwork and reduces the number of questions you field.
- What do you need from us, and when? A firm that hands you a documentation checklist upfront is a firm that has done this efficiently before.
If your existing auditor is the reason you are reading this, the switch itself is routine — we set out the process and timing in appointing and changing your auditor in Singapore. For a fuller walkthrough of the hiring process, see our buyer’s guide to audit firms in Singapore.
Where AG Fits
We have put ourselves in the SME-focused tier rather than at the top of a combined ranking, because that is an accurate description of the work we do. We are not the right firm for an IPO or a ten-jurisdiction group audit, and we will say so on a scoping call. What we are built for is getting a statutory audit done properly, on a fixed fee, inside 30 days — for the private Singapore companies that make up most of the market. If that is your situation, get a fixed-fee audit quote and we will scope it before you commit to anything.
Frequently Asked Questions
Who are the Big 4 audit firms in Singapore?
PwC, KPMG, Deloitte and EY. Between them they audit the majority of Singapore’s listed companies and large multinationals. All four are registered with ACRA as Public Accounting Entities — as is every firm legally able to sign a statutory audit opinion in Singapore.
Do I need a Big 4 firm to audit my company?
For most private Singapore companies, no. A Big 4 audit opinion carries no additional legal weight: any ACRA-registered Public Accounting Entity can issue a valid statutory audit opinion. The exceptions are when an investor, lender or regulator specifically requires a Big 4 auditor, or when you are preparing for an IPO. Otherwise the deciding factors are usually fee, turnaround and how much partner attention you will actually get.
How much do the top audit firms in Singapore charge?
Fees track company size and complexity far more than firm brand. Most Singapore SMEs pay between S$1,000 and S$12,000 a year for a statutory audit, while complex or listed groups start around S$12,000 and often run well above S$20,000. AG’s statutory audit pricing starts at S$5,000 on a fixed fee. Our 2026 statutory audit fee guide breaks down what actually drives the number.
How many audit firms are there in Singapore?
More than any shortlist covers. ACRA maintains the public register of registered Public Accounting Entities, which is the authoritative and current list — it changes as firms register, merge and rebrand. Lists like this one cover the firms most Singapore companies genuinely shortlist rather than attempting to be exhaustive.
Can I change my audit firm partway through?
Yes. Companies change auditors over fee, service quality or independence, and there is a defined process under the Companies Act covering the outgoing auditor’s resignation or removal and the incoming firm’s appointment. We have set out the steps and timing in our guide to appointing and changing your auditor in Singapore.
Reviewed by John Woo, Managing Partner, Ackenting Group — PA, CA (Singapore), ASEAN CPA, FCCA, ATP. John has led more than 2,000 audit engagements in Singapore.
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