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Key contacts
Managing Partner: David Hamzah Damian
Senior Partner : Romi Irawan
Partner: Yusuf Wangko Ngantung
Partner : Ganda Christian Tobing
Senior Partner : B. Bawono Kristiaji
Quick facts
Number of advisers

160

Network memberships

Indonesia Chartered Accountants, Indonesia Association of Universities' Tax Center

Languages

Indonesia, English, Dutch

Key practice areas
General corporate tax
Private client
Tax
Tax controversy
Transfer pricing
Firm overview

Established in 2007 by the esteemed Indonesian taxation experts Darussalam and Danny Septriadi, DDTC has flourished into a diverse organization with multiple specialized units. At the forefront of our offerings is DDTC Consulting, where we provide exceptional taxation services of the highest caliber.

Our comprehensive range of services at DDTC Consulting covers transfer pricing, APA/MAP, tax advisory, and compliance, litigation, dispute & controversy services across all areas of taxation.

Delving deeper into the fiscal landscape, our DDTC Fiscal Research and Advisory unit engages in tax policy research & advocacy, and tailored advisory with extensive analysis specific to your taxation needs.

In the digital realm, DDTC continues to make significant strides. Through DDTC News, we ensure that the latest taxation updates are just a click away, empowering you with up-to-the-minute information. Moreover, our Perpajakan ID serves as a vital hub for daily updates on taxation law, meticulously curated in accordance with the government's newest regulations. And for those seeking a deeper understanding of taxation intricacies, DDTC Academy stands ready to provide customized training and invaluable insights.

Our team consists of highly qualified professionals, including five notable partners and over 150 fee earners, with a significant number holding post-graduate degrees from reputable universities worldwide. Our experts hold licenses, certifications, and diplomas from prestigious institutions like CIOT UK, IBFD, ITC Leiden, WU Vienna, Harvard Kennedy School, etc.

DDTC is your trusted partner for all your taxation needs, supported by expertise, experience, and a commitment to excellence

Key Tax Practice Areas

Compliance Management

  • Business Model Optimisation
  • Economic Modelling
  • Policy Design
  • IP Management
  • Technology Services

Corporate Tax Matters

  • Cross-border Project Management
  • Restructuring
  • Cost-sharing Arrangements
  • APAs
  • Transactions
  • M&A
  • Financial Services
  • M&A
  • Financial Services
  • Corporate Taxes
  • Technology
  • Value Chains

Dispute Resolution

  • Audit Defence
  • Audit Support
  • Dispute Resolution
  • Pre-litigation
  • MAPs/ADRs
  • Litigation
  • Arbitration
  • Controversy Management

Tax Advisory

  • Tax Consulting
  • International Tax Advisory
  • VAT
  • GST
  • Customs
  • Supply Chains

Other

  • Research
  • Training
  • Policy Advisory
  • Knowledge Sharing for Tax Stakeholders
  • Tax Incentives & Facility Support
  • Tax Compliance Assurance
  • HNWI & Expatriate Taxes
  • Individual Employee Taxes
  • Judicial Review Support
Key Transfer Pricing Practice Areas
  • International tax planning
  • Economic modelling 
  • Cross-border project management 
  • TP policy design 
  • Business restructuring 
  • Business model optimisation
  • Audit defence
  • Audit support
  • TP risk management 
  • IP management
  • Cost-sharing arrangements 
  • Dispute resolution 
  • Litigation
  • Arbitration
  • Controversy management
Key Practice Contacts and Recent Matter Highlights

Tax Controversy
Ganda Christian Tobing
christian@ddtc.co.id
 
Transactions Tax
Rinan Auvi Metally
auvi@ddtc.co.id
 
Corporate Tax Matters & Tax Advisory
David Hamzah Damian
david.hamzah@ddtc.co.id
 
Indirect Tax
Khisi Armaya Dhora
khisi@ddtc.co.id
 
Compliance Management
Klara Erika
erika@ddtc.co.id

Transfer Pricing Documentation
Pretty Wulandari
pretty@ddtc.co.id
 
Transfer Pricing Controversy & Dispute Resolution
Veronica Kusumawardani
veronica@ddtc.co.id
 
Supply Chain Optimisation & Business Restructuring
Flouresya Lousha
flouresya@ddtc.co.id
 
Advance Pricing Agreement
Cindy Kikhonia Febby
cindy@ddtc.co.id
 
International Tax Planning
Yusuf Wangko Ngantung
yusuf@ddtc.co.id

Sector Expertise
  • Accounting 
  • Agriculture
  • Automative
  • Aviation
  • Banking
  • Construction and materials
  • Consumer goods and services
  • Energy
  • Financial services 
  • Food and beverage
  • Foestry
  • Government and public policy
  • Healthcare
  • Industrials 
  • Insurance
  • Investment management 
  • Media
  • Mining 
  • Natural resources
  • Oil and gas
  • Pharma and life sciences
  • Real estate 
  • Shipping
  • Social infrastructure 
  • Tech and telecoms
  • Tourism 
  • Transport
  • Utilities

Others:

  • Online Retail,
  • Rubber Industry
  • Dairy Products
  • Tobacco Processing
  • Pulp & Paper
  • Electrical
Address:
Menara DDTC, Jl. Raya Boulevard Barat,
Blok XC 5-6 No. B, Kelapa Gading, Jakarta Utara,
Jakarta
Tel:+62 21 2938 2700 Email:Contact Us Web Address:https://ddtc.co.id/
2026 Edition
General corporate tax
Tier 2
20 firms ranked
View full list

Tier 1

Deloitte
7 practice areas
View profile
EY
7 practice areas
View profile
KPMG
7 practice areas
View profile
PB Taxand
5 practice areas
View full profile
PwC
7 practice areas
View profile

Tier 2

DDTC
5 practice areas
View full profile
GNV Consulting
5 practice areas
View full profile
Hadiputranto Hadinoto & Partners
4 practice areas
View profile
RSM Indonesia
5 practice areas
View profile
SF Consulting
5 practice areas
View full profile

Tier 3

Ideatax
4 practice areas
View full profile
MUC Consulting Group
4 practice areas
View full profile
Suryani Suyanto & Associates
4 practice areas
View profile
TaxPrime
4 practice areas
View profile
WTS Indonesia
4 practice areas
View profile

Tier 4

Provisio Consulting
3 practice areas
View full profile

Other notable

Assegaf Hamzah & Partners
6 practice areas
View profile
MIB
3 practice areas
View profile
Metalaw Legal and Tax Consultant
2 practice areas
View full profile
SSP Consultant
2 practice areas
View full profile
Tax controversy
Tier 2
19 firms ranked
View full list

Tier 1

Deloitte
7 practice areas
View profile
EY
7 practice areas
View profile
GNV Consulting
5 practice areas
View full profile
Hadiputranto Hadinoto & Partners
4 practice areas
View profile
KPMG
7 practice areas
View profile
PwC
7 practice areas
View profile

Tier 2

DDTC
5 practice areas
View full profile
MUC Consulting Group
4 practice areas
View full profile
PB Taxand
5 practice areas
View full profile
RSM Indonesia
5 practice areas
View profile
TaxPrime
4 practice areas
View profile

Tier 3

Provisio Consulting
3 practice areas
View full profile
SF Consulting
5 practice areas
View full profile
Suryani Suyanto & Associates
4 practice areas
View profile

Other notable

Assegaf Hamzah & Partners
6 practice areas
View profile
Azwar Hadisupani Rum & Partners
3 practice areas
View profile
Ideatax
4 practice areas
View full profile
Metalaw Legal and Tax Consultant
2 practice areas
View full profile
WTS Indonesia
4 practice areas
View profile
Transfer pricing
Tier 1
19 firms ranked
View full list

Tier 1

DDTC
5 practice areas
View full profile
Deloitte
7 practice areas
View profile
EY
7 practice areas
View profile
KPMG
7 practice areas
View profile
PwC
7 practice areas
View profile

Tier 2

GNV Consulting
5 practice areas
View full profile
MUC Consulting Group
4 practice areas
View full profile
PB Taxand
5 practice areas
View full profile
RSM Indonesia
5 practice areas
View profile
TaxPrime
4 practice areas
View profile

Tier 3

Hadiputranto Hadinoto & Partners
4 practice areas
View profile
Ideatax
4 practice areas
View full profile
Pro Visioner Konsultindo
3 practice areas
View full profile
SF Consulting
5 practice areas
View full profile
WTS Indonesia
4 practice areas
View profile

Other notable

Assegaf Hamzah & Partners
6 practice areas
View profile
MIB
3 practice areas
View profile
Prime Consult
3 practice areas
View profile
Suryani Suyanto & Associates
4 practice areas
View profile
Overview

DDTC is a leading tax firm in Indonesia, co-founded by Darussalam and Danny Septriadi. The DDTC Consulting team delivers comprehensive tax services spanning tax compliance assurance, transfer pricing, tax controversy, customs disputes and litigation, tax consulting and structuring, as well as private client and expatriate advisory. David Hamzah Damian plays a key role in the firm’s tax controversy and indirect tax service lines, while Romi Irawan provides senior-level expertise to the transfer pricing practice. 

In a recent engagement, the team provided tax consulting services to a corporate client, offering strategic guidance on the income tax implications and relevant regulatory considerations associated with a transaction. The advisory focused particularly on the implications of income tax on capital reduction. 

The team recruited eight specialists and three junior specialists in 2024 

Client feedback 

“DDTC is technically strong, professional and very responsive. They have a deep understanding of both local and international TP regulations, and are able to translate that into practical, business-oriented advice.” 

“During the engagement, their team consistently demonstrates deep technical expertise, strategic insight, and a strong commitment to compliance and client success. The clarity and precision of their analysis, combined with their responsiveness and professionalism, have made a significant positive impact on our operations.” 

“DDTC consistently delivers excellence in consultation matters and assigns their best personnel to represent our company during tax audits.” 

Linked Reviews
Tax

Managing partner Darussalam leads the tax practice at DDTC. The team consists of tax partners, qualified tax practitioners and tax researchers with multi-disciplinary backgrounds. It assists clients in various tax matters such as corporate income tax, tax disputes and litigation, transfer pricing, customs and international tax. Its clients come from the digital technology, oil and gas, mining and consumer goods industries. 

During the research period, the team was active in handling tax audit matters. One of the recent works saw it acting as a tax consultant for a client before the Indonesia Tax Authority.

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