Enforce A was established to support industries in managing their taxation matters, improving compliance, as well as provide better planning for tax efficiency. Enforce A has been effectively operated since 2012. We work with highest license from Directorate General of Taxes (DGT), C- License No.SI-2400/PJ/2012 dated August 16, 2012

Our office address is in WISMA KORINDO, Jalan M.T. Haryono 5th Floor, Pancoran, South Jakarta.

We provide comprehensive consulting in the area of Taxation, and Upstream financial.

Our tax advisory and services cover both strategic and day to day tax matters. We are assisting clients in the area of tax planning, merger and acquisition, tax risk management, day to day tax matters, and compliance services. Our goal is to achieve high tax compliance with more efficient cost by delivering comprehensive and practical solution to our client.

Our experts pose broad taxation knowledge and experiences, involved in various tax assignments for more than 15 years. We have diversity in team background, corporate professional background in collaboration with tax regulator background, which enable us to have complete understanding of the business environment as well as a deep knowledge on regulator point of view.




excellent quality in service and delivery to clients, most efficient and low risk solutions, best practice solutions supporting maximum benefit, growth, and success of clients. Pleasant & excellent attitude as a partner


good faith, clean and clear, concise, ethics, helpful, and neutral practice to clients and others


pro-active & continuous self-development, creative thinking supported by creative environment, open mind for better practices


community contribution, good corporate governance, encourages clients together contributing for a better community

Why We Different?

Comprehensive Practical Solution

We have broad experiences in corporate taxation practice which enable us understand the real need of the business. Based on our long experiences, we develop team and method that able to deliver workable solution to our client. We formulate comprehensive solution that considers every aspect of the business operations, specific business environment, law, and corporate finance with perspective of tax regulator thinking and applicable procedure. We deliver real solutions rather than theoretical advice.

Global Knowledge, Local Fee

We are ‘A’ Consultant who have global taxation knowledge. We are confidence to provide our services to domestic (national) clients as well as foreign investors or foreign companies, in all area of taxation matters or problems. We are local consultant who may understand better of local situations, and also charge a competitive fee to our clients.

Honest and Reliable

We work together with clients to have better result on tax performances. Our focus is to deliver real value to our clients business. We are thinking, planning, and suggesting a better way to doing tax for our clients to improve tax performances and cost efficiency. We do not recommend additional work that will not add value to client business. Long term relationship is our goal and we are always ready whenever clients need our support.

Industry Focus

Oil & Gas, Geothermal Industry

Upstream business is one of our focuses. We serve foreign oil companies (International Oil Companies/IOC) as well as national oil companies (NOC) which operates commonly under Production Sharing Contract (PSC). We also serve Oil & Gas Service Companies as well (drilling companies, construction, transporter/ shipping, oil & gas equipment producer, gas trader, and others). We also provide services to downstream industries such as storage, transportation, refinery, distribution and petroleum trading.

Power, Coal, and Mining

Natural resources extraction is one of the strategic business and strategic issue in many countries including Indonesia. The extraction business commonly ruled under a specific regulation which has some specialties compare to the other industries. Coal and mining business in Indonesia is regulated under Contract of Work (CoW) or Contract Coal of Work (CCoW) and the latest by Mining License. We have strong knowledge and experience to assist client tax matters in the area of coal and mining business

Financial Services, Investment, and Capital Market

The financial services can be very complex both in operations and taxations. Huge of financial products developed by the industry, economic and business environment changes and new product development to response market demand and situation lead to complexity in taxation matters. Appropriate tax planning and tax understanding is a must to support company compliance and tax efficiency.

Telecommunication, Internet, Media, and Infrastructure

Telecommunication, technology, and Media are currently becoming an integral part of human life. This is the most rapid developing industry. The operations involve many intellectual property rights as well as other intangible assets. We are glad to provide any tax advisory and services regarding tax treatment, tax planning and management in any transaction taken by the client in the industry.

Expatriates, High Net Worth Individual (HNWI), and Family Office

Tax management is one of the significant activities for HNWI, but not every HNWI familiar with taxation matters, tax administration and management. We provide tax services or tax management for HNWI including tax management for artists/entertainers, athletes, professionals, entrepreneurs and investors in order to maintain their tax compliance and efficiency. We also help expatriates who work or live in Indonesia in doing their tax obligations

Key Professional

I Wayan Sudiarta, SE, MM, CWM, BKP

I Wayan Sudiarta, SE, MM, CWM, BKP

Managing Partner
Having more than 20 years experiences in taxation with a complete professional journey, both as a government tax officer and private professional. Before run his own practice, he was tax advisor in Salamander Energy, a UK based energy companies. He poses complete taxation knowledge and practice, such as strategic tax, tax audits, International Tax, and Transfer Pricing. During his professional career, he assisted corporate done the tax planning, due diligence, merger & acquisition. Complete his Master in Financial Management from University of Indonesia, heposes expertise in corporate finance as well as valuation skills.He also holds Certified Wealth Manager (CWM) from Erasmus University-GadjahMada University and member of CMWA.He is one of CWMA facilitator for Wealth Management Training delivering taxation subjects. He earned his C-license Tax Certification in 2012.
Yustinus Prastowo, SE, MA, M.Hum

Yustinus Prastowo, SE, MA, M.Hum

Senior Tax Advisor
Previously was Tax Partner in RSM-AAJ Associates, poses more than 20 years experiences in Indonesia taxation, including experiences as a tax officer who actively involved in DGT activities. Complete his experiences in SF Consulting as Senior Manager Tax and finally as a Partner in RSM AAJ Associates. He poses excellent skill in the area of tax dispute resolution, audit, objection, and litigation process. He actively in charge in tax policy concerns, doing research, publish paper and books to support development of Indonesia taxation and working closely with Government Institutions in the area of tax policy. He is also reference for mainstream media for tax policy or tax regulations comments.
Ruben Hutabarat, Ak, M.Ak, CA, BKP

Ruben Hutabarat, Ak, M.Ak, CA, BKP

Partner Tax
Having more than 20 years experiences in several fields: accounting, finance, and taxation, Ruben started career as a Tax Auditor of Directorate General of Taxes for 5 years. Then, he pursued his professional career as Accounting & Tax Supervisor at Rödl & Partner (based in Germany) in 2002, as Tax Manager at RSM-AAJ Associates (2005-2010), and the latest was Senior Tax Manager at SF Consulting-member of Crowe Horwarth International (2010-2016). During his career, he assisted several projects such as Finance & Tax Due Dilligence Service, Transfer Pricing Documentation, Tax Litigation (Appeal & Tax Reconsideration), and Tax Strategy & Planning, etc. Complete his Master in Accounting from University of Indonesia, then he earned C-license Tax Certification in 2015. Having extensive knowledge in the area of tax policy, he is also reference on Television media such as IDX Channel, JakTV, Metro TV.