Annual Personal Income Tax (PPh) Filing Simulator in Coretax
Filing an Annual Personal Income Tax Return (SPT Tahunan PPh Orang Pribadi) is a mandatory obligation for Indonesian taxpayers. To help users understand the filing process before submitting real data, the Directorate General of Taxes (DGT) provides an official tool called the Coretax Annual Tax Return Simulator. This simulator allows users to practice the complete SPT filing process safely using dummy data.
This article explains what the Coretax Simulator is, its benefits, and step-by-step instructions based on the official visual guide shown in the uploaded images.
What Is the Coretax Annual SPT Simulator?
The Coretax SPT Simulator is an official online simulation platform developed by the Directorate General of Taxes (DGT). It is designed to give taxpayers a realistic overview of how to complete the Annual Personal Income Tax Return (PPh Orang Pribadi) through the Coretax system.
All information entered in the simulator is dummy data, meaning it does not affect real tax records. This makes the simulator ideal for learning, training, and preparation before actual tax filing.
Benefits of Using the Coretax Simulator
Based on the information shown in the images, the Coretax Simulator offers several key benefits:
Provides a realistic simulation of the Annual SPT filing process
Accessible online without user registration
Uses a single password for all users
All data in the simulator is dummy and completely safe
These features make the simulator especially useful for first-time taxpayers and those transitioning to the Coretax system.
Step-by-Step Guide to Using the Coretax Simulator
Step 1: Access the Simulator Website
Visit the official simulator website at:
https://spt-simulasi.pajak.go.id
Log in using:
User ID: 16-digit NPWP (NIK)
Password:
P@jakTumbuh1ndonesiaT@ngguh
Step 2: Open the Tax Return (SPT) Menu
After logging in:
Select the Surat Pemberitahuan (SPT) module on the top-left menu
Click Surat Pemberitahuan (SPT)
Step 3: Create a New SPT Concept
For individual taxpayers:
Click the “Create SPT Concept” button
Step 4: Select SPT Type and Period
On the Create SPT Concept page, choose:
SPT Type: Personal Income Tax (PPh Orang Pribadi)
SPT Period: Annual SPT
Tax Year: 2025
SPT Model: Normal
Click Next to proceed.
Step 5: Start Filling the SPT
Once the SPT concept is created:
Click the pencil icon to begin filling in the tax return
Step 6: Complete the Main SPT Data
Fill in the data starting from:
Header
Section A through Section J
All entries should follow the predefined simulation scenario. Supporting attachments will appear automatically based on the selected options. If needed, click “Save Draft” to store progress temporarily. A success notification will appear once saved.
Step 7: Declaration and Submission
In Section K – Declaration:
Check the declaration box
Click “Pay and Submit”
Step 8: Document Signing
On the Document Signature page, select:
Signer Type: Taxpayer Signature
Signature Provider: DGT Authorization Code
Passphrase:
P@jakTumbuh1ndonesiaT@ngguh
Click Check Passphrase. If valid, a success notification will appear. Finally, click Confirm Signature.
Step 9: Simulation Completed
After confirming the signature, the SPT data is successfully submitted within the simulator system, and the simulation process is officially completed.
Conclusion
The Coretax Annual Personal Income Tax Simulator is a valuable educational tool provided by the Directorate General of Taxes. It helps taxpayers understand the full SPT filing workflow in a safe and practical way. With clear steps, easy access, and dummy data, this simulator allows users to practice confidently and reduce errors when submitting their actual tax returns.
Using the Coretax Simulator is a smart step toward better tax compliance and digital tax literacy.
Tags.
coretax simulator, annual tax return indonesia, personal income tax spt, tax filing simulation, djp coretax, online tax reporting.
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