Surabaya Tax Consultants Participate in IKPI CORETAX Training 2026 to Anticipate Tax Reporting Risks

The Indonesian Tax Consultant Association (IKPI) Surabaya Branch organized its first 2026 Continuing Professional Education program related to CORETAX Training. The event was held on January 9–10, 2026, at Dyandra Convention Center, Surabaya. This training is an official program for tax professionals addressing the implementation of Indonesia’s latest tax system.

As an accounting firm that provides tax services, Synergy Ultima Nobilus actively updates the knowledge and expertise of its team. The firm demonstrated this commitment by sending four representatives to participate in the training program.

What Is CORETAX and Why Is It Important?

The Directorate General of Taxes (DGT) developed CORETAX as a new system for filing Annual Tax Returns. The system supports both Corporate and Individual Taxpayers. It integrates tax data in a more detailed, centralized, and transparent manner.

CORETAX began partial implementation in 2025. The 2026 tax year marks the first full implementation for Annual Tax Return filing. This change is new for all taxpayers in Indonesia, including tax consultants and professionals.

The system differs significantly from previous tax filing methods and uses broader data integration. Tax reporting now requires higher accuracy, system understanding, and proper initial setup. Therefore, CORETAX training is crucial for taxpayers and tax consultants. Training helps users understand the system and avoid errors from the outset.

Also Read: KJA: Reliable Partner for Financial Statements and Tax Compliance

Day One – Corporate Tax Return Filing in the CORETAX Era

“Reconciliation Strategies & Data Management for First-Time Corporate Tax Return Filing in CORETAX”

On the first day, the training focused on corporate tax return filing using the CORETAX system. IKPI board members and tax practitioners delivered this session and discussed practical approaches to handling first-time reporting in the new system.

Key topics discussed included:

• Distinguishing between income subject to final tax and non-final tax
• Proper input of business expenses in accordance with the nature of income
• Utilization of withholding tax slips that are now largely integrated automatically into the system

In addition, CORETAX requires more detailed data related to corporate assets, such as bank accounts and fixed assets. This ensures that tax reports accurately reflect actual business conditions and are fully accountable.

Day Two – Challenges in Individual Tax Return Filing

“Analyzing the Implementation of Individual Tax Returns in the CORETAX Era: Challenges & Solutions”

The second day focused on Individual Tax Return filing, particularly for individuals with businesses, freelance activities, or income outside of salaries. This session explored various challenges commonly faced by individual taxpayers since the implementation of CORETAX.

Key points emphasized in this session included:

• The importance of choosing the correct tax calculation method from the outset
• The risk of being required to prepare detailed bookkeeping or records if the chosen method is inappropriate
• Automatic year-to-year comparison of asset and income data by the system

Even small transactions from digital platforms, such as cashback or application incentives, may be detected as additional income if not properly explained. This highlights that individual tax reporting is no longer as simple as it once was.

Also Read: The Directorate General of Taxes Launches the GENTA Application

Why Is CORETAX Training Important for Synergy Ultima Nobilus’ Clients?

By participating in the official program organized by IKPI Surabaya, the Synergy Ultima Nobilus team gained direct insights into:

• The technical and practical workings of the CORETAX system
• Potential risks of tax reporting errors
• Steps that can be taken to ensure tax reporting is safe, orderly, and compliant

This knowledge enables us to provide more precise and well-directed assistance for both corporate and individual clients, helping them avoid tax issues from the beginning.

Synergy Ultima Nobilus’ Commitment

Participation in CORETAX training is part of Synergy Ultima Nobilus’ ongoing commitment to delivering reliable, relevant, and easy-to-understand accounting and tax services.

With continuously updated knowledge in line with regulatory developments and tax system changes, we are ready to become a strategic partner for clients in managing their tax obligations more calmly, orderly, and strategically. Contact Us for further consultation.