Coretax Indonesia 2026: PMK 55/2026 Guide for Companies

Indonesia’s tax administration is becoming increasingly digital. DJP describes Coretax as integrating major tax processes, including registration, payment, tax-return reporting and other tax services.

Management must therefore know who is authorized to enter the company’s Coretax account, prepare documents, sign or submit filings, communicate with the Directorate General of Taxes (DJP), and formally represent the taxpayer. This is especially important for PT PMAs whose foreign directors rely on local finance staff or external tax providers.

PMK 55/2026—Minister of Finance Regulation No. 55 of 2026 concerning Tax Consultants and Other Parties Acting as Taxpayer Proxies—strengthens the regulatory framework for tax intermediaries. It was promulgated and became effective on 24 August 2026. Companies should now review their formal representation arrangements and day-to-day Coretax access.

Why PMK 55/2026 Matters Now

PMK 55/2026 replaces the previous tax-consultant framework under PMK 111/2014, as amended by PMK 175/2022. It introduces broader supervision not only for licensed tax consultants and tax consulting firms, but also for “other parties” acting as taxpayer proxies.

The regulation emphasizes competence, registration, professional conduct and accountability. A taxpayer’s proxy may exercise specific rights or fulfil specific tax obligations under a special power of attorney.

PMK 55/2026 also maintains three authorization levels:

Level A: services for individual taxpayers, subject to stated exclusions.
Level B: services for individuals and corporate taxpayers, but excluding foreign-investment companies, permanent establishments and taxpayers connected with treaty jurisdictions as specified in the regulation.
Level C: services for all individual and corporate taxpayers.

For a PT PMA, a formal tax representative should have the appropriate Level C authorization. General tax experience or access to company files is not sufficient.

Who Can Represent a Company Before DJP?

A company may fulfil its Indonesian tax obligations through its lawful representative, generally its authorized management, or appoint a proxy for particular tax matters.

Under Government Regulation No. 50 of 2022, a taxpayer may appoint a proxy through a special power of attorney. The proxy may be a tax consultant, another qualified party or, where applicable, a family member. Except for the family category, the proxy must possess the required tax competence.

PMK 55/2026 further regulates tax consultants and other parties acting as taxpayer proxies. It defines an “other party” as an individual, other than a tax consultant or family member, who has obtained a registration certificate and is appointed by a taxpayer as a proxy under applicable tax rules.

The roles are distinct:

A company representative or management member acts by virtue of their legal position in the company.
A tax proxy acts under a special power of attorney for the matters specified in that document.
A Coretax user with a limited role performs only the system functions assigned to that account.

These roles may overlap, but they are not automatically interchangeable.

Employee vs External Tax Consultant or Representative

Comparison of company management, employee Coretax roles and formal tax representatives under PMK 55/2026 — A Coretax system role is not automatically the same as legal authority to represent a company before DJP.

Coretax allows a company’s Person in Charge (PIC) to grant employees or related persons specific system roles—for example, to prepare invoices, withholding-tax documents or tax returns. Access can be limited according to each person’s duties.

However, system access alone should not be treated as unlimited legal authority. An employee given a Coretax role is not automatically authorized to represent the company in every interaction with DJP, sign every document or handle a tax audit, objection or other formal procedure.

If an employee will formally act as a taxpayer proxy under a special power of attorney, the company should verify whether that person falls within the “other party” category and meets the competence, registration and classification requirements under PMK 55/2026.

An external tax consultant should hold a valid license with the correct classification. For PT PMAs, permanent establishments and relevant cross-border cases, Level C capability is particularly important. The engagement and special power of attorney should match the work expected.

What Companies Need to Prepare in Coretax

Companies should treat Coretax access as compliance governance, not password sharing. A practical review should cover:

the company’s tax registration and master data;
the identity of the current PIC and company representative;
consistency between Coretax, the company deed and Ministry of Law/AHU records;
active personal Coretax access for each authorized individual;
verified email addresses and telephone numbers;
appropriate representative roles for finance or tax personnel;
a valid DJP authorization code or electronic-signature facility where required;
current powers of attorney and supporting authorization documents; and
removal of access for former directors, employees and service providers.

Corporate tax work is generally performed by an individual who logs in through their personal taxpayer account and uses the impersonation function to act for the company. DJP explains that the corporate account manages the tax profile and roles, while authorized individuals use their own accounts to perform tax functions.

This means every access trail is connected to a person. Sharing credentials therefore creates both a security risk and an accountability problem.

Why Foreign Directors Should Review Their Coretax Access

Foreign director and Indonesian tax team reviewing Coretax Indonesia access and tax representative authorization in 2026 — Coretax access should be supported by accurate company data, controlled user roles and properly documented authority.

Foreign directors often delegate Indonesian tax administration, but they should still know who holds super-user access and who can submit or sign documents.

The main PIC generally has broad authority in Coretax, including the ability to manage roles and perform the company’s tax rights and obligations. If the PIC data is outdated, incorrectly registered or linked to a former director, the company may lose practical control of its tax account.

DJP has also explained that Coretax impersonation is connected with responsible-person data held by the Directorate General of General Legal Administration (AHU). If the company’s management information is inconsistent with AHU data, a director or representative may be unable to impersonate the company in Coretax.

Foreign directors should therefore ask for a current access map—not simply confirmation that “the accountant handles it.”

Common Coretax Problems

The most frequent problems are administrative rather than technical:

the wrong person is recorded as the company’s PIC;
a director’s name or identity data does not match the deed or AHU record;
a foreign director has not activated their personal Coretax account;
the registered email address or telephone number is inaccessible;
an employee can prepare a return but lacks the role needed to submit or sign it;
a former employee or provider still has access;
the special power of attorney does not cover the relevant tax matter;
a representative’s license, registration certificate or classification is not appropriate; or
management assumes that possession of the company’s login details equals valid authorization.

These issues can delay tax filings, invoice issuance, withholding-tax documentation, responses to DJP correspondence, and other time-sensitive procedures.

Coretax Compliance Checklist for Foreign-Owned Companies

Use this checklist for a PT PMA tax-compliance review:

welve-point Coretax compliance checklist for PT PMA and foreign-owned companies in Indonesia — Foreign-owned companies should review Coretax data, PIC access, AHU consistency, powers of attorney and Level C authority.

Confirm that the company’s NPWP, address, business data and tax status are correct.
Compare the directors and authorized management in Coretax with the latest deed and AHU data.
Identify the main PIC and confirm that management approves this person.
Activate and test the personal Coretax access of each necessary user.
Create a written list of who may prepare, review, sign, submit and communicate with DJP.
Grant only the minimum Coretax roles required for each employee.
Review all active related persons, representatives and proxies; revoke obsolete access.
Confirm that each special power of attorney states the relevant tax matter and scope.
Verify the license or registration, validity and classification of any formal tax representative.
For a PT PMA or cross-border matter, confirm that the representative has the required Level C authority.
Maintain internal approval and document-retention procedures for every filing.
Review Coretax access whenever a director, employee or tax provider changes.

How WeSrve Can Support Your Coretax and Tax Compliance

Coretax has made Indonesian tax administration more integrated, but digital access does not remove management responsibility. Companies need accurate data, controlled access, properly documented authority and consistent monthly compliance.

WeSrve supports foreign-owned companies with practical Indonesian tax administration, including:

monthly tax calculation, payment coordination and reporting;
Coretax registration, activation and account administration;
review of PIC, related-person and user-role access;
corporate income tax and withholding-tax compliance;
VAT administration, where applicable;
coordination of authorization documents and representative arrangements;
tax-account reconciliation and compliance calendars; and
ongoing support for foreign directors who need clear English-language updates.

Need help reviewing your company’s Coretax access or monthly tax compliance? Visit www.wesrve.co.id, contact us at support@wesrve.co.id, or WhatsApp at +62 8181881 1887 for a practical Coretax compliance review for your PT PMA or Indonesian company.

We look forward to supporting your governance and compliance objectives in Indonesia.

Disclaimer: This article provides general information and does not constitute legal or tax advice. The correct authorization arrangement depends on the company, the person involved and the specific tax procedure. Companies should obtain advice for their individual circumstances.