BLOGS Business in Malaysia

What NOT to Do During an LHDN Tax Audit | The First 30 Days That Determine Everything

by Ishika Bhandari Jun 11, 2026 7 MIN READ

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LHDN tax audit Malaysia response what to do is often decided in the first 30 days. Many companies panic after receiving an audit letter and start sending scattered files, casual explanations or unreviewed tax workings. That is risky. A tax audit is not only about answering questions. It is about giving accurate records, keeping control of the response and avoiding fresh mistakes during the review.

For Malaysian SMEs, the first month matters because it sets the tone. LHDN may ask for business records, tax computations, invoices, bank statements, payroll records, agreements or supporting schedules. The company’s response should be organized, factual and consistent.

Why The First 30 Days Matter?

IRBM’s audit framework states that a tax audit checks business records and financial affairs to confirm that the right amount of income has been declared and the right amount of tax has been calculated and paid.

The framework also explains that audit cases may be selected through computerized analysis based on risk criteria, information received, specific industries, business issues and significant controlled transactions. This means selection does not automatically mean the company has done something wrong.

The first 30 days should be used to understand the audit scope, identify requested documents, control communication and prepare a clean response file. A weak first response can create more questions than answers.

A Quick Overview Of What Not To Do

MistakeWhy It Creates RiskBetter Response
Ignore the audit letterDeadlines may be missedConfirm receipt and scope quickly
Send raw files too fastWrong or duplicate records may be sharedReview files before submission
Give verbal explanations onlyNo clear audit trail remainsPut key replies in writing
Hide missing documentsIt damages trustExplain gaps and recovery steps
Alter old recordsIt can worsen exposureKeep original records intact
Overpromise correctionsLater contradictions may appearReview facts before answering
Ignore Section 81 noticesDocument production may become seriousTrack each requested item
Delay adviser involvementPosition may be set wrongly earlyBring tax support in early

1. Do Not Ignore The Audit Letter

The worst first step is silence. An audit letter should be reviewed on the same day it arrives. The company should check the year of assessment, tax type, audit period, officer details, deadline and documents requested.

A director or finance lead should assign one person to manage the file. This person should not answer everything alone, but should control the flow of documents and replies.

If the letter is unclear, ask for clarification politely. Do not guess the scope and send unrelated records.

2. Do Not Send Every File Without Review

Some companies respond by sending a full accounting dump. This can create confusion because the file may include drafts, duplicates, wrong versions or unsupported notes.

The better approach is to build a response index. List each document requested, the file name, source, period covered and person who reviewed it. This creates a clean audit trail.

A tax audit response should be complete, but not careless. Every document should match the request and support the company’s position.

3. Do Not Give Casual Verbal Answers

LHDN field audit investigation response work should not rely on memory. Verbal answers can be misunderstood, especially when the issue involves revenue recognition, related party charges, director accounts or old expenses.

The company should keep written notes of meetings and calls. Any important point should be confirmed in writing after internal review.

This does not mean the business should sound defensive. It means the company should be accurate. A calm written record helps everyone stay aligned.

4. Do Not Hide Missing Records

Missing documents are common in SME audits. The mistake is pretending everything exists. If a document is missing, the company should check backups, vendor emails, bank files, old folders and accounting attachments.

Public Ruling No. 3/2015 explains that records or documents may be required through a notice under section 81 of the ITA. A deduction is allowed only if the taxpayer submits records or documents that meet the requirement within the specified time. 

This is why missing support should be handled carefully. Explain what is missing, what alternative proof exists and what steps are being taken to recover the document.

5. Do Not Alter Records After The Audit Starts

A company should never change old invoices, recreate agreements, backdate documents or edit payment records after an audit starts. This can create more serious questions than the original error.

If a record has an error, disclose it properly. Keep the original file and prepare a correction note. The note should explain the mistake, impact and proposed treatment.

A clean correction is safer than a document that looks rebuilt only for audit purposes.

6. Do Not Ignore Section 81 Document Production

Section 81 document production LHDN requests should be treated seriously. The tax authority has the power to call for information under the Income Tax Act framework.

The company should create a Section 81 tracker when a formal notice is issued. The tracker should show each requested item, owner, status, deadline and submission proof.

If more time is needed, request an extension before the deadline. Waiting until the due date can make the company look disorganized.

7. Do Not Make Voluntary Disclosure Without Reviewing The Facts

Tax audit Malaysia voluntary disclosure can help in some situations, but it should not be rushed. A company may discover an omission, wrong claim or under-reported income after preparing the audit file.

Before making a disclosure, the team should quantify the issue, identify the year of assessment, check supporting records and understand penalty impact.

For submitted returns, HASiL states that a taxpayer may make a self-amendment through an Amended Return Form within 6 months of the due date for submission of the Income Tax Return Form, subject to the stated conditions. Past that point, the audit framework and penalty rules need careful review.

8. Do Not Treat Section 113 Penalty As A Small Risk

Section 113 incorrect return penalty Malaysia risk should not be ignored. HASiL’s offences page lists penalties for incorrect returns that omit or understate income and incorrect information affecting tax liability. The listed amount is RM1,000 to RM10,000 and 200% of tax undercharged.

This does not mean every audit adjustment will automatically carry the maximum penalty. It means the company should avoid careless replies, unsupported claims and weak explanations.

A proper response can help show cooperation, record quality and the real facts behind the tax position.

Conclusion

An LHDN audit is manageable when the company responds with discipline. The first 30 days should focus on scope, records, timelines and accurate explanations. Arnifi helps businesses organize audit files, review tax exposure and prepare clear response workflows so the company can handle LHDN questions with better control.

FAQs

What should a company do first after receiving an LHDN tax audit letter?

The company should read the letter carefully, confirm the audit period and tax type, identify the requested documents and assign one response owner. It should not send files before reviewing them.

What is a Section 81 document request by LHDN?

A Section 81 request is linked to the tax authority’s power to call for information. The company should track each requested document, deadline, owner and submission proof.

Can voluntary disclosure help during a tax audit?

It can help in some cases, but the company should first review the facts, quantify the issue and check the relevant year of assessment. Rushed disclosure can create new problems.

What is the Section 113 incorrect return penalty in Malaysia?

HASiL lists Section 113 penalties for incorrect returns or incorrect information affecting tax liability. The listed penalty is RM1,000 to RM10,000 and 200% of tax undercharged.

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