The Ortax Consulting

Your trusted tax partner

We try to understanding you more comprehensive... The rapid economic growth, the intense change and competition encourages the business to innovate their strategies in various aspects. The Ortax Consulting, with our experience both as practitioners and lectures at University of Indonesia will provide a comprehensive solution as a partner for Company's tax matters.

Our Services

Tax Services

Taxation is one of the most important areas for any business. Each strategic decision by management could potentially give rise to significant tax implications.

Transfer Pricing

Cross-border business transactions with related parties have to be established following the internationally accepted arm’s-lenght-principle and must be documented in line with domestic tax rules.

Payroll/ PPH 21

You sell. We do taxes. With the increased growth of ecommerce, sales tax and income tax are becoming a complicated and time-consuming burden on companies.

Tax Manual/ SOP

It’s often difficult and expensive to find experienced personnel who can handle complicated institutional reporting functions.

Startup Taxes

Business tax season is a bit more involved than most personal ta fillings, but with proper organization and education, it’s not as much of a hassle …

We have significant experience assisting our clients with complicated, international tax issues.

Our Customers


TOC's services is invaluable

Derren has been my first port of call for any US based tax questions for 3 years now. The Complexity of my tax liability as a US person living abroad and a business owner has the potential to be a nightmare, and Derren makes that go away for me. Deren’s service is invaluable for any US person living abroad.


I highly recommend TOC

Derren was very highly recommended by business friends to solve my very complicated US Tax problem. His knowledge of IRS requirements and regulations is supreme. He produced the final results on IRS forms much sooner than expected. I highly recommend Derren for any US Tax matters.


A Customer service that you cannot find

Derren Joseph were able to help us in our US Tax Compliance performing a detailed review of the last 9 years ensuring that all requirements of the IRS are fully satisfied. He is very helpful to our queries irregardless of the day and time. A Customer service that you cannot find to any of the consultant out there. Highly recommended not only because of his crediantials but also because of his professional work ethics.


Contacts and Information

Gedung Pemuda, 2nd Floor
Jl.Pemuda Raya No.66 Rawamangun Jakarta-Indonesia 13220

Phone: +62 21 47881443
              +62 21 47883598
Fax: +62 21 47881350


Ortax ( Observation & Research of Taxation ) merupakan media informasi perpajakan berbasis web yang dapat dengan mudah diakses melalui internet di alamat : . Ortax mulai dikembangkan pada awal tahun 2006. Tujuan Utama ortax adalah menjadi pusat kajian ilmu dan informasi perpajakan bagi masyarakat yang peduli terhadap masalah pajak di Indonesia.​