Step by Step Guide: How to Amend CP500 Amount and Avoid CP500 Penalty for Self Employment Tax

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Received a CP500 notice from LHDN? Do not rush to pay —-and do not rush to amend it either.
There is a lesser known rule that can trigger a CP500 penalty if you revise incorrectly.

This guide explains how CP500 works, how to submit a CP500 appeal using CP502, and how to amend CP500 safely for self employment tax without triggering the 10 percent penalty.

What Is CP500 for Self Employment Tax

CP500 is an estimated tax installment issued by LHDN. It applies to individuals with business income or self employment tax obligations. Read our full CP500 guide for more details.

This includes:

• Sole proprietors
• Freelancers
• Commission earners
• Partners in partnership
• Individuals with business income

LHDN estimates your annual tax. Then split the amount into installments. You must pay based on the CP500 schedule unless you amend CP500 using CP502.

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Can You Amend CP500 and What’s the Deadline 

Yes. You can amend CP500 twice per year using CP502. This is also known as a CP500 appeal.

Late submissions are typically not  accepted by LHDN.

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Hidden Rule That Triggers CP500 Penalty

Many taxpayers amend CP500 to a lower amount. This can trigger a CP500 penalty.

Example:

Actual tax payable: RM12,000
Revised CP500 estimate: RM5,000

Difference: RM7,000
30 percent of actual tax: RM3,600

The difference exceeds 30 percent.
Penalty applies.

Penalty calculation:
10 percent x RM3,400 = RM340 CP500 penalty

This applies to self employment tax estimates submitted through CP500 appeal.

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Step by Step Guide to Amend CP500 Using CP502

Step 1: Fill in taxpayer details

Enter:

• Name
• Identification number or passport
• Tax reference number
• Year of assessment
• LHDN branch name and address

These fields identify your CP500 amendment request.

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Step 2: Enter revised CP500 estimated tax amount

Fill in:

• Revised estimated tax amount
• Total installments already paid
• Remaining balance payable

This section determines your new CP500 installment schedule.

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Step 3: Fill revised CP500 installment schedule

Enter:

• Remaining installment months
• Monthly installment amount
• Total revised CP500 amount

Step 4: Sign CP500 appeal form

Complete:

• Name
• Identification number
• Contact number
• Date
• Signature

Unsigned CP502 forms may be rejected.

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How to Submit CP500 Appeal to LHDN

You can submit CP502 using four methods:

1. Email
   [email protected]
2. Mail
   Send to your LHDN branch
3. Walk-in submission
   Submit directly at LHDN office
4. MyTax portal
   Submit through Customer Feedback Form

How to Amend CP500 Safely Without CP500 Penalty

Use these guidelines:

• Estimate conservatively
  Do not reduce too aggressively
• Use latest business income
  Base estimate on actual performance
• Account for seasonal revenue
  Avoid underestimating annual income
• Check 30 percent tolerance rule
  Ensure difference stays within range

This reduces the risk of a CP500 penalty for self employment tax.

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When Should You Amend CP500

Consider CP500 appeal if:

• Business income dropped
• Business closed temporarily
• Profit margin decreased
• One-time income that is not recurring
• Economic slowdown affected revenue

Do not amend CP500 if income remains stable. Risk of CP500 penalty increases.

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CP500 Amendment Checklist

Before submitting CP500 appeal:

• Calculate actual projected income
• Estimate tax payable
• Check 30 percent rule
• Confirm installment affordability
• Complete CP502 form
• Submit before deadline

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Final Notes on CP500 Amendment

CP500 is an estimated self employment tax installment.
You can amend CP500 using CP502.
But an incorrect CP500 appeal can trigger a penalty.

Always calculate carefully before you amend CP500.

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Frequently Asked Questions About CP500

Can I amend CP500 more than twice

No. Only two CP500 appeal windows allowed.

What happens after I amend CP500

LHDN issues CP503X with a new installment schedule.

Who receives CP500

Individuals with business income and self employment tax.

What triggers CP500 penalty

Underestimating tax by more than 30 percent.

Is CP500 mandatory

Yes, unless it has been revised using CP502.

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