OA International

What OA International does

OA International is a Singapore-based professional services firm operating in the accounting and advisory sector, founded in 2011 and structured as a privately held, for-profit entity. The firm provides audit, tax advisory, corporate advisory, and valuation services, positioning it as a multi-discipline practice serving clients that require combined financial-compliance and corporate-finance support. Its service portfolio spans the typical offerings of a boutique accounting firm — assurance and audit, tax structuring and compliance, transactional and corporate advisory, and business valuation — although the firm does not disclose its customer segments, industry specialization, or any proprietary technology platform supporting service delivery in the available source material.

With a headcount in the 11-50 range, OA International sits in the small-to-mid-tier segment of Singapore's professional services market. Its public digital presence is presently limited: the corporate website is gated by a verification/loading page, providing no product, pricing, customer-reference, or capability content. The firm does not publish a customer list, ARR or revenue figures, partnership or alliance roster, awards and recognition, certifications, patents, or any M&A or funding activity in the disclosed material. Similarly, no operating geographies beyond the Singapore domicile are documented, no sub-brands or DBAs are identified, and no parent-company or investor relationships are reported.

The firm is founder-led, with Alan Chang serving as Founder and Managing Director. No additional members of senior management, key partners, or board composition are disclosed, and no leadership or restructuring changes are recorded post-founding. There is no evidence of external funding, institutional investment, mergers and acquisitions, geographic expansion beyond the stated Singapore base, or industry partnerships or accreditations in the dataset. Given the absence of revenue disclosures, customer logos, pricing models, and partnership data, the firm's precise scale, client roster, and growth posture cannot be triangulated with confidence from public sources.

Name

OA International

Website

https://oa-international.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Singapore-based accounting and advisory firm founded in 2011, offering audit, tax advisory, corporate advisory, and valuation services. Operates as a privately held, founder-led practice with 11-50 employees and minimal disclosed digital footprint.

Ownership category

akta.pro rank

Headquarters

HQ city

Singapore

HQ country

Singapore

HQ region

Asia

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations

Core offering

OA International is a Singapore-based accounting firm that delivers audit, tax advisory, corporate, valuation, and advisory services to clients. The firm operates as a professional services provider supporting businesses with statutory, regulatory, and transaction-related financial work. Its offerings span recurring compliance engagements as well as project-based advisory mandates.

Differentiator

Problem solved

Functional benefit

Products and services

• Audit Services
• Tax Advisory Services
• Valuation Services
• Corporate Advisory Services

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Recent moves3 records

Expansion highlights3 records

Direct peers

• BDO Singapore: Mid-tier international accounting network member operating in Singapore with audit, tax, and advisory services—closely comparable to OA International's core offerings for SME and mid-market clients.
• RSM Singapore: RSM's Singapore member firm provides audit, tax, and consulting to mid-market clients—highly comparable in service mix and target segment to OA International.
• Mazars Singapore: International mid-tier accounting firm offering audit, tax, and advisory in Singapore—directly comparable offering profile to a multi-disciplinary Singapore accounting boutique.
• Baker Tilly Singapore: Baker Tilly's Singapore practice provides audit, tax, and advisory to mid-market and family-owned businesses—closely comparable scale and service portfolio.
• Crowe Singapore: Crowe's Singapore office delivers audit, tax, and advisory services to SMEs and listed entities—comparable mid-tier positioning and service mix.
• Nexia International: Global network of mid-tier accounting and advisory firms operating across APAC—comparable as an alternative affiliation/peer model for cross-border mid-market services.
• Moore Global: International accounting network with presence in Singapore and across the region—comparable as a peer affiliation option for boutique accounting firms serving cross-border mid-market clients.
• CLA Global (formerly HJ Lee & Co) Singapore member: Singapore-based accounting and advisory firm serving SMEs, family businesses, and listed entities—comparable boutique-to-mid-tier positioning and client focus in Singapore.

Broad incumbents

• KPMG Singapore: Big 4 firm with full-service audit, tax, and advisory in Singapore—broader incumbent competitor that defines the upper bound of the market OA International competes in.
• Deloitte Singapore: Big 4 firm offering comprehensive audit, tax, and consulting services in Singapore—a dominant broad incumbent across all segments where OA International operates.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks4 records

Key highlights4 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about OA International