How to Choose an Accounting Firm in Singapore: A Practical Guide for SMEs

Most guides to choosing  an accounting firm in Singapore read like a sales pitch  from the firm that wrote them. . This one works the other way round. It sets out the actual factors that separate a good fit from a bad one, so that by the time you reach a shortlist, you know why each name is on it.

Getting this decision right does more than keep you compliant. The right partner catches a GST registration you should have applied for, flags a filing deadline before it becomes a penalty, and gives you numbers you can actually make decisions from. The wrong one leaves you finding out about a problem the week it becomes urgent.

What “Accounting Firm” Actually Means in Singapore

The difference between a bookkeeper, accounting firm, and public accounting firm

These three terms get used loosely, and the differences matter more than most SME owners realise when they start comparing providers.

A bookkeeper records transactions: sales, purchases, receipts, payments. A bookkeeper primarily records and organises financial transactions. The exact scope varies by provider, so check whether financial statement preparation, tax and advisory work are included. 

An accounting firm goes further. Beyond recording transactions, it prepares financial statements, handles GST filing, manages payroll, and advises on compliance obligations under the Companies Act and the Income Tax Act. Most firms SMEs engage, including full-service outsourced providers, sit in this category.

A public accounting firm is a specific, regulated category: a firm registered with the Accounting and Corporate Regulatory Authority (ACRA) to perform statutory audits and issue audit opinions on financial statements. Under the Accountants Act, Statutory audits must be carried out through the appropriate ACRA-registered public accountant and public accounting entity arrangements. The registered public accountant signs the audit opinion.. This is a narrower designation than “accounting firm,” and most SMEs, particularly those that qualify for audit exemption, will never need one directly, though their accounting firm may coordinate with one when an audit is required.

What ACRA registration and ISCA membership mean for you

Here’s a distinction worth clearing up early, because it trips up a lot of buyers: ACRA registration as a public accountant is only required for firms performing statutory audits. IA provider does not need to register as a public accounting entity solely to offer bookkeeping or tax advice. However, a business that provides certain corporate services, including company formation, ACRA filing services or designated activities connected with accounting services, may need to register with ACRA as a corporate service provider.Asking “are you ACRA-registered?” as a blanket qualifying question will filter out perfectly legitimate accounting firms that simply don’t do audits.

What’s more useful is asking whether the individual accountants on your account hold a professional qualification, most commonly CA (Singapore), the designation awarded by the Institute of Singapore Chartered Accountants (ISCA). ISCA membership isn’t a legal requirement to practise general accounting, but it signals a baseline of technical training, ethics obligations, and continuing education that an unqualified bookkeeper won’t have. If your company will need a statutory audit, that’s when ACRA registration becomes relevant, and it applies to the audit firm specifically, not necessarily your day-to-day accounting provider.

The Three Tiers of Accounting Firms in Singapore

Big 4: who they are and who actually needs them

Deloitte, EY, KPMG and PwC serve listed companies, multinational subsidiaries, and businesses actively preparing for an IPO. Their strength is depth: international tax structuring, cross-border transfer pricing, and audit capacity for complex group structures. That depth comes at a price point built around retainer and audit fees that typically start in the thousands per month and can run considerably higher for complex engagements. For a straightforward local SME, this tier is usually paying for capability you won’t touch.

Mid-tier firms: the sweet spot for growing SMEs

Names like RSM, Baker Tilly, BDO, and Foo Kon Tan occupy the space between the Big 4 and local SME providers. Mid-tier firms may be a good fit for businesses with more complex needs, such as overseas operation.

Full-service SME firms: outsourced accounting, tax, and secretarial under one roof

This is where most Singapore SMEs actually land. A full-service accounting firm bundles bookkeeping, GST filing, financial statement preparation, and often tax advisory, payroll, and corporate secretarial work into a single relationship, rather than requiring you to coordinate three or four separate vendors. Ledgen Group is one example of this model: alongside accounting, it also handles tax advisory and corporate secretarial work under the same engagement, which removes a common failure point where a bookkeeper and a separate tax agent aren’t talking to each other before a filing deadline.

The trade-off against a mid-tier firm is usually scope rather than quality: a full-service SME firm won’t typically run a statutory audit itself (it will coordinate with an ACRA-registered public accounting firm when one is needed), but for the ongoing compliance and reporting work that makes up most of an SME’s actual accounting needs, this tier is built specifically for that job.

How Much Do Accounting Firms in Singapore Charge?

Fee ranges by firm tier and service scope

Pricing varies enough by tier that comparing quotes from different accounting firms without knowing which tier you’re looking at is close to meaningless. As a rough guide to monthly ongoing fees:

These figures cover routine accounting and compliance work. A statutory audit, when your company needs one, is billed separately by a firm registered with ACRA to perform audits, and can range from roughly S$1,000 to S$6,000 for a small or dormant entity up to S$15,000 and above for larger, more complex structures.

What drives the price up: transaction volume, GST registration, multi-entity structures

Within any given tier, the quote you actually receive depends on a handful of variables: how many transactions your business generates each month, whether you’re GST-registered (which adds a recurring filing obligation), whether you run payroll and for how many staff, and whether you operate through a single entity or several. A dormant holding company with a handful of transactions a year will sit at the bottom of its tier’s range; an active trading company with GST registration, payroll, and monthly management reporting will sit near the top.

Questions to ask before signing an engagement letter

Before committing, get clear answers on: what exactly is included in the quoted fee (bookkeeping only, or financial statements and GST too), what triggers an additional charge (a spike in transaction volume, an ad hoc report, a tax query), how often you’ll receive management accounts, and who specifically will handle your file day to day versus who signs off on it. A vague answer to any of these is worth treating as a signal, not just an inconvenience.

Five Questions to Ask Before Choosing an Accounting Firm

Are they ACRA-registered or ISCA-affiliated?

As covered above, ACRA registration only matters if audit work is on the table. What you actually want to confirm is whether the team preparing your accounts includes ISCA-qualified accountants, and, separately, whether the firm has a working relationship with a registered public accountant for the years your business does need an audit.

Do they have experience in your industry?

A firm that’s spent years on F&B clients will already know how to handle inventory costing and cash reconciliation for a restaurant; that same firm might be slower on a SaaS company’s deferred revenue treatment. Ask for examples of clients in your sector, not just a general client list.

Can they handle your full compliance lifecycle: accounting, tax, and secretarial?

This is the question that separates a bookkeeper from a genuine compliance partner. A company incorporated in Singapore needs, at minimum, a company secretary, annual financial statements, a corporate tax filing, and (if registered) GST returns, all on overlapping but not identical deadlines. A provider that only does bookkeeping leaves you to coordinate the rest yourself, or to hire separately for tax advisory and corporate secretarial support. Firms built around the full-service model exist specifically to close that gap.

What software do they use and are they InvoiceNow-ready?

InvoiceNow, Singapore’s national e-invoicing network built on the Peppol standard, is becoming mandatory in phases for GST-registered businesses. Since 1 November 2025, the requirement has applied to companies that voluntarily register for GST within six months of incorporation. Since 1 April 2026, it has also applied to businesses applying for voluntary GST registration, regardless of incorporation date or business structure. It is scheduled to extend progressively to other GST-registered businesses from April 2028 to April 2031. If GST registration is anywhere on your horizon, ask now whether your prospective provider’s systems already support InvoiceNow-ready invoicing, rather than finding out later that a system migration is coming.

How do they handle urgent or non-routine requests?

Routine month-end bookkeeping is the easy part to evaluate. What matters more is what happens when a bank asks for a letter within 48 hours, or IRAS raises a query with a short response window. Ask directly how the firm handles time-sensitive requests outside the standard reporting cycle, and listen for whether the answer is specific or generic.

Red Flags to Watch For

No named accountants or verifiable credentials

If a provider can’t tell you which qualified accountant will actually be responsible for your file, or can’t point to a verifiable ISCA membership or relevant professional background, treat that as a gap worth pressing on rather than glossing over.

Vague pricing with no written scope

A quote with no line-item breakdown of what’s included tends to become a quote with surprise add-ons three months in. Insist on a written scope before signing anything.

Slow turnaround on basic queries during onboarding

How a firm responds before you’re a paying client is usually the best version of how they’ll respond after. A provider that takes a week to answer a simple onboarding question is telling you something about what to expect once you’re locked into an engagement.

No experience with IRAS submissions or GST filings

This should be a baseline, not a differentiator, but it’s worth confirming directly rather than assuming. Ask for a rough description of their IRAS submission process and how they’ve handled a GST query or audit request in the past.

What to Expect From a Full-Service SME Accounting Firm in Singapore

Once you’ve narrowed your shortlist to this tier, here’s the baseline of what a properly run accounting service in Singapore should deliver as a matter of course, not as an upsell.

Monthly bookkeeping and management accounts

At minimum, expect transactions recorded on a monthly (or at least quarterly) basis, bank accounts reconciled, and a set of management accountsprofit and loss statement and balance sheet)hat actually let you see how the business is performing rather than just satisfying a filing requirement.

GST filing and IRAS compliance

If your company is GST-registered, quarterly returns need to be filed on time and reconciled against your actual transactions, not just estimated. A firm worth keeping should also flag proactively if your revenue is approaching the GST registration threshold before you’re technically required to register, since getting ahead of that decision avoids a scramble later.

Annual financial statements and XBRL filing

Companies generally need to prepare annual financial statements unless an exemption applies. Whether they must file those statements with ACRA, and whether XBRL format is required, depends on the company’s circumstances. Audit exemption removes the audit requirement, but it does not automatically exempt a company from preparing financial statements. Audit exemption does not, by itself, remove the requirement to prepare financial statements. Whether those statements must be filed with ACRA is a separate question. 

Coordination with your corporate secretary and tax filing deadlines

Your annual return, corporate tax filing, and GST filings don’t share a single deadline, and a provider that treats each one in isolation is more likely to let something slip. A firm coordinating your accounting and corporate secretarial work under one roof has a structural advantage here: the person preparing your financial statements and the person managing your ACRA filings are working from the same file, not exchanging documents across two separate vendors.

When to Upgrade to a Mid-Tier or Larger Firm

Revenue thresholds that typically trigger the switch

There’s no fixed rule, but a useful signal is approaching or crossing S$10 million in annual revenue, the same figure that governs both the small company audit exemption and the mandatory transfer pricing documentation threshold. Once a business sits near that line, the compliance stakes and the complexity of the numbers usually justify a firm with deeper bench strength.

When statutory audit requirements apply

A private company loses its audit exemption once it fails the “2 of 3” small company test (revenue, total assets, and employee headcount, each measured against a S$10 million or 50-employee threshold) for two consecutive financial years, or once it’s part of a group that no longer qualifies as a small group on a consolidated basis. At that point, you’ll need to engage a public accounting firm registered under the Accountants Act for the audit itself, even if your ongoing bookkeeping stays with your existing provider.

Cross-border or multi-entity complexity

A single Singapore entity with domestic customers is a different problem from a group with a Malaysian subsidiary, related-party transactions, and consolidated reporting obligations. Once cross-border structuring, transfer pricing, or multi-jurisdiction tax planning enters the picture, it’s worth confirming your current provider has genuine experience in that area rather than learning together on your file.

Need this handled instead of DIY’d?

Ledgen Group is a full-service accounting firm in Singapore, handling accounting, tax advisory, payroll, corporate secretarial, and incorporation under one roof for startups through established SMEs. See our accounting services

About Ledgen Group:

Ledgen Group has supported businesses in Singapore since 2003, with a presence across Singapore, Malaysia, and Hong Kong. The firm provides accounting, tax advisory, payroll and HR, corporate secretarial, and company incorporation services from its Singapore office at 100 Tras Street, #16-01, 100 AM.

Frequently Asked Questions

How do I verify if an accounting firm in Singapore is legitimate?

Check that the provider’s business registration in ACRA’s Bizfile records, and ask the specific staff who would handle your file whether they hold ISCA membership or an equivalent professional qualification. If the firm will also handle your statutory audit, confirm that the entity specifically is registered with ACRA as a public accounting firm, since general business registration and public accountant registration are two different things.

What is the difference between a compilation report and an audit?

A compilation report is a straightforward presentation of financial information prepared from records the company provides, with no independent verification of the underlying figures. An audit involves an independent examination of those records, with the auditor forming and expressing an opinion on whether the financial statements are fairly presented.  An audit-exempt company still needs to meet its applicable financial reporting requirements, but audit exemption does not automatically mean it must obtain a compilation report. A compilation engagement may be requested for a particular business or third-party purpose.

Can I switch accounting firms mid-year?

Yes, though it’s smoother at a natural break point, such as after a quarter-end or financial year-end, since your new provider will need to pick up the trial balance and transaction history cleanly. A reasonable firm will ask for a handover period and prior-year working papers from your outgoing provider rather than starting from scratch.

Do I need a separate corporate secretary or can my accounting firm handle it?

Every Singapore company is legally required under section 171 of the Companies Act 1967 to appoint a company secretary, who must ordinarily reside in Singapore, within six months of incorporation. Many full-service firms, Ledgen among them, offer corporate secretarial services alongside accounting, which is worth considering if you’d rather manage one relationship than two.

What qualifications should a Singapore accounting firm hold?

For general accounting, bookkeeping, and tax work, there’s no legal qualification requirement for the firm itself, though you should look for ISCA-qualified accountants on staff. Firms offerings incorporation or corporate secretarial services, however, must be registered with ACRA as Corporate Service Providers. 

How long does it take to onboard a new accounting firm?

This varies with the state of your existing records, but a straightforward handover (current books, prior-year financials, and cooperative outgoing provider) typically takes two to four weeks. A messier handover( incomplete records or a slow-to-respond previous provider) can take considerably longer, which is itself a reason to ask about a firm’s onboarding process before you sign.