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Istama Siddharta

Istama Siddharta, a seasoned professional with a Doktorandus in Accounting from the University of Indonesia, serves as the President Director of PT Amalgamated Consulting Indonesia. With a remarkable career spanning over three decades, Istama brings extensive experience to his role. His journey includes pivotal positions in Big 4 accounting companies and key roles in reputable companies. Since 2009, he has been at the helm of PT Amalgamated Consulting Indonesia, showcasing adept leadership. Istama’s expertise extends to the academic realm, where he served as a lecturer at the University of Indonesia from 1983 to 2019. With over 30 years specializing in tax and financial planning strategies, his influence has been pivotal in sectors ranging from manufacturing and telecommunications to energy, oil & gas, mining, plantation, consumer markets, and financial services. Istama is a driving force, combining academic insight with extensive industry knowledge to shape the success of PT Amalgamated Consulting Indonesia.

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Dian Kartika

Associate Manager of Establishment Division

Dian Kartika serves as the Associate Manager of the Establishment Division, specializing in corporate matters including corporate secretarial services, compliance, ad-hoc services, and various other corporate-related functions. She holds a Bachelor’s Degree in Education, majoring in the English Department from Atma Jaya Catholic University, Jakarta. Dian possesses extensive experience in establishing foreign investment companies and representative offices. Her expertise includes handling corporate compliance reports, secretarial matters, and amendments to the Articles of Association of companies. Additionally, she is proficient in processing expatriate work and stay permits. With a strong background in corporate consulting and education, Dian ensures that all corporate processes are executed efficiently and in compliance with regulations. Her comprehensive knowledge and skill set make her an invaluable asset to the organization, effectively managing and streamlining corporate establishment and compliance operations.

Tonizar Lumbanbatu

Associate Director of Taxation Services

Tonizar Lumbanbatu, Associate Director of Taxation Services, is a Registered Tax Attorney at the Indonesia Tax Court and holds a Licensed Tax Consultant (Brevet C Certification). With over 20 years of experience, Tonizar excels in tax audits, objections, and court proceedings, including appeals and judicial reviews at the Supreme Court. Previously serving as Head Tax Office and Tax Officer, his expertise spans corporate income tax, VAT, withholding taxes, and international tax issues, including transfer pricing and cross-border transactions. Tonizar’s extensive knowledge is applied across diverse industries, including mining, plantation, manufacturing, and retail, making him a valuable asset in tax disputes and advisory services.

Istama Siddharta

President Director

Istama Siddharta, a seasoned professional with a Doktorandus in Accounting from the University of Indonesia, serves as the President Director of PT Amalgamated Consulting Indonesia. With a remarkable career spanning over three decades, Istama brings extensive experience to his role. His journey includes pivotal positions in Big 4 accounting firms and key roles in reputable companies. Since 2009, he has been at the helm of PT Amalgamated Consulting Indonesia, showcasing adept leadership. Istama’s expertise extends to the academic realm, where he served as a lecturer at the University of Indonesia from 1983 to 2019. With over 30 years specializing in tax and financial planning strategies, his influence has been pivotal in sectors ranging from manufacturing and telecommunications to energy, oil & gas, mining, plantations, consumer markets, and financial services. Istama is a driving force, combining academic insight with extensive industry knowledge to shape the success of PT Amalgamated Consulting Indonesia.

Sukiman Muljana

Director of Business and Corporate Services

Sukiman Muljana, Director of Business and Corporate Services, is a highly qualified professional with a Bachelor’s Degree in Accounting from the University of Trisakti, Jakarta, and a Master of Business Administration with a major in Finance from the Royal Melbourne Institute of Technology, Australia. As a registered and certified accountant, Sukiman boasts a diverse background, having served as a consultant and external auditor for seven years at one of the Big 4 Accounting Firms, an internal auditor in a prominent conglomerate in Indonesia, and a finance manager in a multinational corporation. With over a decade of experience, he now leads Business and Corporate Services at his current role, overseeing accounting, payroll, establishment, expatriate documentation, and other corporate services. Sukiman also imparts his wealth of knowledge as a university lecturer for more than 10 years, specializing in manufacturing, financial services, trading, construction, and consumer markets.

Grace Gosal

Director of Individual Executive Tax Service

Grace Gosal, Director of Individual Executive Tax Service at PT Amalgamated Consulting Indonesia, is a seasoned tax professional with a Bachelor’s Degree in Accounting from Parahyangan Catholic University, Bandung (1991), and a Master of Science and Administration from Boston University, U.S.A (1993). With over two decades of experience, Grace has been a dedicated tax consultant since 1995, specializing in both corporate and individual taxation. Currently the head of the Individual Executive Tax Services Department, she efficiently manages day-to-day operations, offering expert tax consulting and compliance services to local and expatriate taxpayers in multinational and domestic corporations. Grace’s expertise extends to handling tax audits related to individual tax issues. Her sector experience encompasses Tax Compliance, Tax Advisory, and Tax Disputes, making her an invaluable asset in the realm of tax services.

Oke Lidiawaty

Director of Business Services

Oke Lidiawaty, Director of Business Services, holds a Bachelor’s Degree in Economics from the University of Trisakti, Jakarta. With a wealth of experience, Oke currently spearheads a team of professional accountants, overseeing the provision of accounting, audit, and business advisory services to both multinational and local companies. Her expertise lies in the meticulous compilation and review of financial statements, as well as the reconciliation of accounts within financial statements. Before joining our organization, Oke dedicated seven years with one of the Big 4 Accounting Firms, where she played a key role in managing accounting and review engagements. Her sector experience spans manufacturing, financial services, construction, mining, services, and power plants. Oke Lidiawaty is a seasoned professional, ensuring excellence in business services across diverse industries.

Hanna Magdalena Nggelan

Director of Corporate Tax Service

Hanna Magdalena Nggelan, Director of Corporate Tax Service, is a highly qualified tax professional holding licenses as a Tax Consultant (Brevet C Certification) and a Licensed Tax Court Representative. With over two decades of experience, Hanna has excelled in various Tax Consultant Firms, delivering expertise to both local and multinational corporations across diverse industries such as automotive, pharmaceutical, services, retail, consumer products, and plantations. Her proficiency extends to handling tax disputes, including audits, objections, and appeals, as well as executing tax due diligence assignments and tax diagnostic reviews. Hanna has played a pivotal role in providing tax advice on crucial transactions like mergers, business transfers, company establishments, compliance management, and various tax-related matters. Her sector expertise lies in Tax Advisory, Tax Disputes (Audit, Objection, Appeal, and Judicial Review), and Tax Due Diligence, making her an invaluable asset in the realm of corporate tax services.

Nozomi Kitaoka

Associate Director

Nozomi Kitaoka, an Associate Director, holds a Bachelor’s Degree in Commerce from the University of Sydney. With over 7 years of prior experience in the banking industry, specializing in credit examination and treasury, he transitioned to consulting, contributing to a project team dedicated to improving the bank’s condition. With a total of 8 years, Nozomi excels as a coordinator in tax, accounting, company establishment & closure, and M&A at the consulting industry. Currently serving as the Associate Director in charge of the Japan Desk, he coordinates projects across manufacturing, financial services, trading, construction, and consumer markets.

Emiri Tokunaga

Associate Director of Japan Desk

Emiri Tokunaga, Associate Director of Japan Desk, leads coordination in tax, accounting, company establishment/closure, and M&A. Armed with a Bachelor’s Degree in Economics and Business Administration from Boston University, USA, she brings diverse experience. With over 5 years in bulge bracket investment banks, specializing in fixed income sales for international institutional investors, and more than a decade coordinating projects for Japanese government agencies, Emiri seamlessly blends finance and project management expertise. In her current role, she coordinates projects across manufacturing, financial services, trading, construction, and consumer markets, demonstrating a versatile skill set in the consulting industry.

Heriyanto

Associate Director of Business Services

Heriyanto, Associate Director of Business Services, is a seasoned professional leading corporate accounting services. With a Bachelor’s Degree in Accounting from the University of Tarumanagara, Jakarta, and as a Chartered Accountant Indonesia, he brings over 15 years of experience in accounting, audit, and taxation for multinational clients. Currently, he manages a team of professionals, overseeing tasks such as financial statement compilation, internal control assessment, SOP development, and audit assignments. Heriyanto’s extensive sector experience spans manufacturing, trading, construction, mining, and consumer markets, showcasing his versatility and expertise in diverse industries. He holds a pivotal role, reporting directly to the Director.

Ronny Andry Prasodjo

Associate Director of Business Services

Ronny Andry Prasodjo, Associate Director of Business Services, is a highly qualified professional with a Bachelor’s Degree in Accounting from the University of Tarumanagara, Jakarta. With an extensive background, Ronny has held roles as a consultant and external auditor with prestigious accounting firms and one of the major manufacturers of processed food and beverages. Currently overseeing Business Services, he has provided accounting and audit services to multinational and local companies for over 15 years. Ronny’s sector expertise spans manufacturing, financial services, trading, construction, logistics, and services, showcasing his versatility in diverse industries.

Rahel Jong

Associate Director of Payroll Services

Rahel Jong, Associate Director of Payroll Services, holds a Bachelor’s Degree in Accounting from the University of Tarumanagara, Jakarta, and is a Registered Chartered Accountant from the University of Indonesia, Jakarta. With over 15 years of professional experience, Rahel excels in managing teams of accountants, specializing in payroll, paying agent, and monthly tax compliance services for both multinational and local companies. Her expertise encompasses a comprehensive understanding of Indonesian payroll issues, including employee income tax, monthly withholding tax compliance, BPJS, employee termination payments, and paying agent services. Rahel’s sector experience spans manufacturing, IT, financial services, trading, e-commerce, and Representative Offices, showcasing her versatility in the service industry.

Telli Susilo Chandra

Associate Director of Payroll Service

Telli Susilo Chandra, Associate Director of Payroll Service, holds a Bachelor’s Degree in Economics from the University of Tarumanegara, Jakarta. With over 20 years of professional experience, Telli possesses comprehensive knowledge of Indonesian payroll issues, covering employee income tax, monthly withholding tax compliance, BPJS, termination payments, and paying agent services for multinational and local companies. Prior to joining our organization, she served as an auditor at one of the Big 4 Accounting Firms for two years. Telli specializes in payroll and employee income tax services, catering to diverse industries such as manufacturing, banking, mining, trading, plantation, non-profit organizations, and Representative Offices.

Deasy Prasodjo

Associate Director of Payroll Service

Deasy Prasodjo, Associate Director of Payroll Service, holds a Bachelor’s Degree in Accounting from S.T.I.E YKPN, Yogyakarta. With 20 years of expertise, Deasy boasts a rich understanding of Indonesian payroll intricacies, focusing on employee income tax matters. Formerly an auditor at one of the Big 4 consultants for 4 years, she now leads a team of professional accountants, delivering payroll services to both multinational and domestic companies. Deasy’s sector experience spans manufacturing, financial services, trading, e-commerce, among others, managing payroll, employee income tax, and worker social security for numerous employees. Her extensive background positions her as a key player in the payroll service industry.

Lam Meilina

Associate Director of Individual Executive Tax Services

Lam Meilina, Associate Director of Individual Executive Tax Services, oversees individual taxation services, managing clients’ monthly and annual tax returns, handling tax audits, facilitating tax reductions and refunds, and conducting individual tax training. She holds a Bachelor’s and Master’s Degree in Accounting from Trisakti School of Management and Trisakti University, respectively, and is a registered Chartered Accountant. With over 15 years at the firm, Meilina’s expertise extends to accounting and taxation in manufacturing, trading, and services industries, showcasing her proficiency in providing comprehensive individual tax solutions.

Andina Ayu Triani

Associate Manager of Individual Tax Services

Andina Ayu Triani serves as the Associate Manager of Individual Tax Services, where she specializes in reviewing and submitting documents required for the registration and deregistration of Tax ID Numbers (NPWP) for expatriates. She oversees monthly tax installments for individuals, prepares, and submits Annual Income Tax Returns for individuals. Andina also assists in tax audits, ensuring compliance and accuracy in all tax-related matters. Andina holds a Bachelor of Economics degree from Universitas Multimedia Nusantara. Her professional experience includes working as an Accounting Staff at PT Dayamitra Telekomunikasi (Mitratel) and as a Business Executive at PT Bank International Indonesia. With a solid background in finance and tax, Andina brings a wealth of knowledge and expertise to her role. Her meticulous attention to detail and strong understanding of tax regulations make her an invaluable asset to the team, providing exceptional service and support to clients in managing their individual tax obligations efficiently.

Muthia Nadhira

Manager of Corporate Tax Service

Muthia Nadhira, serving as the Manager of Corporate Tax Service, holds the designation of a Licensed Tax Consultant. With over 8 years of expertise, she adeptly oversees corporate tax services, managing tasks like monthly and annual tax compliance, tax audits, objections, and appeals. Muthia has a rich background in taxation, catering to both local and multinational corporations across diverse sectors, including manufacturing, trading, plantation, and services. Her comprehensive experience positions her as a proficient leader in navigating the complexities of corporate taxation.

Rahmi Pudji Lestari

Manager of Establishment division

Rahmi Pudji Lestari serves as the Manager of the Establishment Division, overseeing the day-to-day operations of the Investment Support Services practice. She brings over twenty years of experience in advising companies on the Indonesian regulatory environment, structuring options for business establishment, licensing requirements across industries, and expatriate immigration matters. Her specialization lies in establishing foreign investment companies, representative offices, and handling expatriate immigration issues.

Sagitawati Rahayu

Manager of Individual Executive Tax Service

Sagitawati Rahayu serves as the Manager of Individual Executive Tax Service, leveraging over two decades of expertise as a tax consultant. Specializing in individual income tax services for local and expatriate clients, she oversees consulting and compliance services. Sagita’s experience extends to individual tax matters, tax audits, and providing tax training for expatriates. With a decade-long tenure at KPMG Indonesia before joining our organization, she brings a wealth of knowledge to various industries, including manufacturing, trading, construction, and Representative Offices.

Richard

Associate Director of Business Services

Richard, serving as the Associate Director of Business Services, is a seasoned leader overseeing corporate accounting functions. Leading a team of eight professionals, he excels in financial statement compilation, internal control assessment, SOP development, and audit assignments. Richard brings over 12 years of experience in accounting, audit, and taxation for multinational clients. His versatile expertise spans various industries, including manufacturing, trading, consumer markets, construction, logistics, and services.

Hardi Tanzil

Associate Manager of Business Services

Hardi Tanzil serves as the Associate Manager of Business Services, leading a team responsible for corporate accounting functions, including financial statement compilation, internal control assessment, SOP development, audit assignments, and various accounting-related tasks. He has led his team in diverse industries like manufacturing, trading, construction, logistics, and services, showcasing his expertise and leadership in the field.

Leonhard Chandra

Manager of Corporate Tax Service

Leonhard Chandra serves as the Associate Manager of Corporate Tax Service, overseeing monthly and annual tax compliance, tax audits, objections, appeals, and other tax-related functions. As a licensed Tax Consultant, Leonhard brings over 6 years of taxation expertise for local and multinational corporations. His proficiency in handling tax disputes and diverse sector experience, including manufacturing, trading, services, retail, and consumer products, makes him a valuable asset.

 

Mari Takada

Mari Takada

Mari Takada, serving as an Associate Manager, brings a wealth of experience in Indonesian real estate spanning over 7 years. Mari excels in sales, management, and client coordination. For the past two years, she has played a vital role as a consultant for a Japanese client, contributing to company establishment, liquidation, amendment of articles of association, and visa applications. Specializing in supporting Japanese clients, Mari oversees the intricacies of setting up companies, obtaining licenses, ensuring compliance, and handling tax and accounting matters within the Japan Desk.

Niko Gradyanto

Associate Manager of Business Services

Niko Gradyanto, serving as the Associate Manager of Business Services, is a seasoned professional with extensive experience in accounting and audit for multinational clients spanning over 8 years. A Bachelor’s degree holder in Accounting from Tarumanagara University, Jakarta, Niko also pursues his CFA candidacy at level 2. As a group leader, he oversees corporate accounting services, including financial statement compilation, standard operating procedures development, and audit assignments while managing a team of four professionals.

Kezia Tenggono

Business Development Manager

Kezia Tenggono is the Business Development Manager at PT. Amalgamated Consulting Indonesia since 2020. Holding a Master of Science in Accounting, Organisations, and Institutions from The London School of Economics and Political Science, acquired in 2018 and Bachelor of Science from University of London. Kezia spent her early career journey as a venture capitalist, focusing on early stage funding and operations . With her diverse educational background and managerial role at PT. Amalgamated Consulting Indonesia, Kezia leverages her expertise to drive business development initiatives, contributing to the company’s growth and success in the dynamic Indonesian market.

Enrico Gunawan

Associate Manager of Business Services

Enrico Gunawan serves as the Associate Manager of Business Services, overseeing corporate accounting functions including financial statement compilation and review, internal control assessment, standard operating procedure development, audit assignments, and other related tasks. Leading a team of five professionals, he holds a Bachelor’s Degree in Economics with a major in Accounting from Trisakti School of Management, Jakarta. With experience spanning accounting, audit, and taxation across multinational and local firms, Enrico and his team actively engage in diverse accounting-related projects. Enrico’s expertise ensures efficient and high-quality accounting services tailored to meet the specific needs of clients, fostering trust and reliability in the business services domain.

Machiko Umakoshi

Associate Director of the Japan Desk

Machiko Umakoshi serves as the Associate Director of the Japan Desk, overseeing tasks related to tax, accounting, and company establishment/closure. Holding a Master of Public Policy from the Graduate Institute for Policy Studies, Japan, and a Master of Public Health from the ASEAN Institute for Health Development, Mahidol University Thailand, Machiko brings a multidisciplinary approach to her role. With over 7 years of experience in a consulting firm in Jakarta, Machiko has honed her expertise in managing the Japanese market, particularly in payroll, tax, and accounting matters. Her in-depth understanding of both policy and health development adds a unique perspective to her work, enabling her to navigate complex issues effectively. Her dedication to excellence and meticulous attention to detail make her a valuable asset to the Japan Desk team.

Makoto Tamura

Associate Manager of the Japan Desk

Makoto Tamura serves as the Associate Manager of the Japan Desk, overseeing tasks related to accounting, company establishment/closure, visa procedures, and more. Holding a Bachelor’s Degree in Law from the University of Tokyo, Japan, Makoto brings a wealth of knowledge to his role. With over 4 years of experience in a Japanese public authority and nearly 8 years of expertise in analyzing big data, Makoto possesses a diverse skill set.With a keen eye for detail and a strategic approach, he plays a pivotal role in the Japan Desk’s operations and client satisfaction.

Mia Ilmas Wikantanti

Associate Manager of the Japan DeskAssociate Director of Corporate Tax Service

Mia Ilmas Wikantanti serves as the Manager of Corporate Tax Service, boasting qualifications as a Licensed Tax Consultant – B and a Licensed Tax Court Representative. With over eleven years of professional tax expertise, Mia adeptly handles tax disputes encompassing tax audits, objections, appeals, and tax due diligence assignments across diverse industries such as plantation, hospitality, manufacturing, information technology, and consumer goods. Her responsibilities extend to conducting tax diagnostic reviews and tax diligence projects, ensuring compliance and efficiency in tax-related matters. Mia’s sector experience spans tax disputes involving audit, objection, appeal, and judicial review, along with expertise in tax compliance and tax due diligence.

Koji Shima

President Commissioner

Koji Shima, the esteemed Commissioner of PT Mori IST Development (MID) and President Commissioner at PT Amalgamated Consulting Indonesia, Indonesia’s premium provider of integrated business, corporate, and investor services, brings with him a wealth of experience spanning three decades. With a Bachelor of Laws from the University of Tokyo attained in 1981, Shima’s expertise extends across international trade, retail sales, and investment, with extensive involvement across the Americas, Europe, and Southeast Asia. Proficient in Japanese, English, Spanish, and Indonesian, Shima’s multilingual proficiency underscores his ability to navigate diverse business landscapes and forge global partnerships. His visionary leadership and profound understanding of international markets have been instrumental in driving ACI’s success and fostering its reputation as a trusted industry leader in Indonesia and beyond.