Audit · Tax · Advisory — 30+ Years of Experience

for Sustainable Growth

Strategic Consulting

Union Consultant is more than an accounting firm — we are a strategic partner to business owners. Our team of CPAs and Certified Internal Auditors helps you plan taxes legally, build reliable accounting systems, and see your numbers clearly, so you can grow with confidence. One tax penalty can cost more than a full year of professional advice.

Ms. Manunyapath Angkunpornchai 

Founder & Managing Director · CPA (Thailand), CIA, CCSA

CPA - Certified Public Accountant (Thailand)
100%
CIA - Certified Internal Auditor
100%
CCSA - Certification in Control Self-Assessment
100%
QACR - Quality Assessment & Review
100%

Accounting and Tax Services

Bookkeeping, tax filing and tax planning integrated with your business strategy — including international tax.

Auditing Services

Statutory audits by CPAs, internal audits by CIAs, plus tax audits and due diligence that banks and investors trust.

Financial and Business Services

Accounting and ERP system setup, financial restructuring, M&A and valuation advice for confident growth decisions.

Our Services

Discover Our Comprehensive
Range of Services

We align assurance with risk management, tax with business strategy,  and consulting with real-world experience 

                                                                                                           supporting your business at every stage, from start-up to exit.

Company registration

Company formation, registered office, changes of directors or capital, and corporate secretarial records.

Tax planning

Tax planning integrated with your business strategy, covering corporate, personal and international tax.

Liquidation and dissolution

Dissolution, liquidation and insolvency handled properly, with all tax issues cleared.

Accounting System Setup

Design and set-up of accounting and management information systems, from FlowAccount and Express to    Odoo ERP.

Monthly/yearly accounting

Bookkeeping, monthly tax filings and year-end closing, or full outsourcing of your accounting work.

Payroll services

Accurate payroll, withholding tax and social security processing, handled with full confidentiality.

Statutory audit

(by a Certified Public Accountant – CPA)

Audit and limited review of financial statements, plus tax auditing, that banks and investors trust.

Internal audit

(by a Certified Internal Auditor – CIA)

Internal audit, control self-assessment and risk management that close leaks and prevent fraud.

Financial Advisory

Financial structuring, restructuring, M&A, business valuation, capital budgeting and feasibility studies.

Accounting and Tax Training

Seminars and in-house workshops on accounting, tax, internal audit and risk management.

Business consulting

Management consulting, profitability analysis and corporate legal advice, including contract review.

Due Diligence & Special Audit

Due diligence and special-purpose audits for investors, lenders, mergers and management reviews.

Case study

Your Trusted Partner in Business Growth

Blue Shop — a billion-baht retailer expanding its branch network — had outgrown its accounting system. We implemented Odoo ERP to connect every branch into one real-time platform, reducing errors and giving management clear numbers for faster decisions.

 
Years of Experience
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Clients Served
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Professional Certifications
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Leading Organisation
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What We Offer

Support That Grows Your Team

Flexible support for businesses that want expert work done right                                                             — without building a full in-house team.

Accounting Outsourcing

Hand over the work you can’t or prefer not to handle in-house — bookkeeping, payroll, management reports and data processing. Your month-end closes on time, even when staff change.

Corporate Training & Seminars

In-house workshops and seminars on accounting, tax, internal control, internal audit and risk management — led by a lecturer of The Institute of Internal Auditors of Thailand (IIAT), trusted by banks and state enterprises.

Second Opinion

Already have an accountant? We review your books, tax position and internal controls to spot risks early — without replacing your current provider.

Insights

Tax & Business Insights for Owners

Our Clients

Trusted by Leading Organisations

From national brands to state enterprises, organisations rely on us for audit, tax and advisory work.

Let's Talk About Your Business

Tell us a little about your business and what's on your mind. Our team will get back to you within one business day to arrange a first consultation.

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