Business Tax Guide

How to fix errors on your e-filed tax return: A practical guide

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Written by Michael Wong, CPA Reviewed by TAX.hk Editorial Team Published Last updated
How to fix errors on your e-filed tax return: A practical guide
Business Tax Guide
How to Correct Errors in Your Submitted eTAX Return: A Practical Guide

📋 Key Takeaways

  • Timing for Correction: Informal corrections can be made before assessment; a formal objection must be lodged within 1 month after receiving the Notice of Assessment
  • Safety Net Provision: Section 70A of the Inland Revenue Ordinance allows applications for correction within 6 years after the end of the year of assessment
  • Penalty Risks: For submitting an incorrect return, the Inland Revenue Department may impose an additional tax of up to 3 times the amount of tax undercharged under Section 82A
  • Voluntary Disclosure: Proactively reporting errors before the Inland Revenue Department discovers them can significantly reduce penalties
  • Online Correction: eTAX users can amend tax returns via the "Make Enquiry/Provide Information" function
  • Record Keeping: Tax records must be retained for at least 7 years to support correction applications
  • Director Protection: Company directors do not bear personal penalty liability under Section 82A for incorrect contents in a company's tax return

Discovering an error in your submitted Hong Kong tax return can indeed be unsettling. But the good news is that the Hong Kong Inland Revenue Department (IRD) provides clear avenues for taxpayers to correct errors. Whether it involves omitted income, overstated deductions, or a simple calculation error, understanding the proper correction procedures can help you avoid penalties and ensure compliance. This practical guide will explain in detail how to correct errors in your eTAX return.

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Two Key Correction Scenarios: Timing is Everything

Your correction method depends entirely on whether you have received the Notice of Assessment from the Inland Revenue Department. This distinction is critical, as it dictates the level of formality of the procedure and the specific steps you must follow.

Scenario 1: Before Receiving the Notice of Assessment (Best Timing)

If you discover the error before the Inland Revenue Department issues the Notice of Assessment, you are in the best position. The correction procedure at this stage is relatively straightforward and less formal.

💡 Pro Tip: Review your tax return immediately after submission. Spotting errors before the Notice of Assessment is issued can save time and avoid formal objection procedures.

eTAX Users (Individual Tax Account):

  1. Log in to eTAX: Access your individual tax account.
  2. Navigate to the Correction Function: Click on the "Make Enquiry/Provide Information" or "Contact Us" section.
  3. Select Option: Select "Supplementary Information for Tax Return for the Year of Assessment [Year of Assessment]".
  • Detail the Amendments: Clearly state the contents that need to be amended in the "Enquiry Details" field.
  • Upload Documents: Attach supporting documents (up to 5 files, total size 200MB).
  • Submit: Click "Send" to submit your amendment request.

    • For Paper Tax Return Submitters:

    • Write a formal letter to the Inland Revenue Department detailing the amendments required.
    • Include your full name, tax file number, year of assessment, and contact information.
    • Provide the amended information in the tax return format.
    • Attach relevant supporting documents.
    • Mail to: Commissioner of Inland Revenue, P.O. Box 28777, Concorde Road Post Office, Kowloon, Hong Kong.

    Scenario 2: After Receiving the Notice of Assessment (Formal Procedure)

    Once you receive the Notice of Assessment, any amendment requires a formal objection. This is governed by specific provisions of the Inland Revenue Ordinance and is subject to strict time limits.

    ⚠️ Important Notice: You must lodge a notice of objection within one month from the date of issue of the Notice of Assessment. This deadline is strictly enforced with very few exceptions.

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    How to Lodge a Formal Objection: Step-by-Step Guide

    To correct errors after an assessment is issued, you must lodge a formal objection. Here are your options and the necessary requirements:

    1. Log in to Account: Log in to your "eTAX" account.
    2. Locate the Objection Section: Go to the objection section (applicable to Salaries Tax, Property Tax for solely owned properties, and Profits Tax for sole proprietorships).
    3. Fill in the Form: Complete the online objection form.
    4. State the Grounds: Explain your grounds of objection clearly and precisely.
    5. Upload Evidence: Attach supporting documents as needed.
    6. Submit: Submit your objection electronically.

    Method 2: Paper Submission Using Form IR831

    1. Download the Form: Obtain Form IR831 – Notice of Objection / Application for Revision of Assessment.
    2. Fill in the Sections: Complete all relevant sections.
    3. State the Grounds: Accurately explain why you are objecting.
    4. Sign: Sign the completed form.
    5. Submit: Mail to: Commissioner of Inland Revenue, P.O. Box 28777, Concorde Road Post Office, Kowloon, Hong Kong or fax to: 2877 1232.

    What Your Notice of Objection Must Include

    • Personal Information: Full name, Tax Identification Number (TIN), contact details.
    • Assessment Details: Year of assessment, assessment number, date of assessment.
    • Grounds for Objection: Clear explanation of what is incorrect and why.
    • Correct Information: Accurate figures or information.
    • Supporting Documents: All relevant documents (receipts, statements, computations).
    • Recomputation: Showing how the tax should be correctly calculated.

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    Section 70A: Your Extended Correction Safety Net

    Section 70A of the Inland Revenue Ordinance is a crucial provision for taxpayers who have missed the one-month objection deadline. Designed to alleviate potential hardship, this provision allows taxpayers to apply for a correction even after an assessment has become "final and conclusive."

    When Section 70A Applies

    • You discover an error months or even years after the assessment has become final.
    • You missed the one-month objection deadline due to reasonable causes.
    • New information comes to light that affects your assessment.
    • There is a calculation error, incorrect figure, or omission.

    Time Limits for Section 70A

    The deadline for a Section 70A application is the later of:

    • Option A: Within 6 years after the end of the year of assessment to which the correction relates, or
    • Option B: Within 6 months after the date of issue of the relevant notice of assessment.

    Note: The current year of assessment is 2026/27 (1 April 2026 to 31 March 2027). For the latest tax rates, allowances, and deadlines, please refer to the Inland Revenue Department website.

    Year of Assessment Assessment Issue Date Section 70A Application Deadline
    2023/24 October 2024 31 March 2030 (6 years after the end of the year of assessment)
    2024/25 October 2025 31 March 2031 (6 years after the end of the year of assessment)
    ⚠️ Important Limitation: Section 70A should not be used for repeated general revisions. Corrections must relate to actual errors or omissions, and the Inland Revenue Department may reject applications that fail to provide proper substantiation.

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    Understanding Penalties: Section 82A of the Inland Revenue Ordinance

    Submitting an incorrect tax return may trigger significant penalties under Section 82A of the Inland Revenue Ordinance. Understanding these penalties and how they are applied is crucial for all taxpayers.

    What Triggers Section 82A Penalties?

    Section 82A(1)(a) provides that any person who, without reasonable excuse, submits an incorrect tax return by omitting or understating anything in respect of which they are required to make a return, may be subject to additional tax of up to treble the amount of tax undercharged.

    • Omitting income in a tax return.
    • Understating income or profits.
    • Overstating deductions or allowances.
    • Calculation errors leading to underpayment of tax.
    • Late filing of tax returns (yes, even late filing can trigger Section 82A).

    Penalty Assessment Procedure

    1. Written Notice: The Commissioner of Inland Revenue issues a notice of intention to assess additional tax.
    2. Details of the Breach: The notice sets out the details of the alleged breach.
    3. Opportunity to Respond: You have at least 21 days to submit written representations and evidence.
    4. Assessment Decision: The Commissioner will review your representations before making a final decision.
    5. Right of Appeal: You may lodge an appeal with the Board of Review within one month after the notice of assessment of additional tax is issued.

    Penalty Ranges Based on Disclosure

    Disclosure Category Typical Penalty Range Description
    Prompt and full disclosure upon inquiry Lower range Field audit cases settled within 3 months; investigation cases settled within 6 months
    Voluntary disclosure Substantially reduced Unprompted disclosure before the Inland Revenue Department commences an investigation
    Disclosure during investigation Moderate to high range Cooperation provided after the Inland Revenue Department commences an investigation
    No disclosure / Non-cooperation Up to treble the amount of tax Lack of cooperation or attempts to conceal

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    The Power of Voluntary Disclosure: Your Best Defense

    One of the most effective ways to minimise penalties is through voluntary disclosure. The Inland Revenue Department actively encourages taxpayers to voluntarily come forward before errors are uncovered through an audit or investigation.

    Benefits of Voluntary Disclosure

    • Substantially Reduced Penalties: Generally eligible for penalties at the lowest scale.
    • Avoidance of Criminal Prosecution: Genuine disclosures are handled through administrative measures.
    • Demonstration of Good Faith: Shows a commitment to tax compliance.
    • Faster Resolution: Cases are usually resolved more quickly.
    • Reduced Stress: Proactive handling alleviates anxiety.

    How to Make a Voluntary Disclosure

    For a disclosure to be considered genuinely "voluntary", it should be made under the following conditions:

    1. Prior to Contact by the IRD: Ideally before any audit or investigation commences.
    2. Complete and Accurate: Provide full details of all errors and omissions.
    3. Supported by Documentation: Include documentary evidence substantiating the corrections.
    4. In Writing: Submit a formal letter or use the "eTAX" system.
    5. With a Settlement Proposal: Propose a reasonable payment schedule for the underpaid tax, where applicable.

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    Record Keeping: Your Safeguard Against Penalties

    Proper record keeping is not only a statutory requirement, but also essential for substantiating corrections and protecting yourself throughout the process.

    • Any person carrying on a business in Hong Kong must keep records of income/expenditure.
    • Records must be retained for not less than 7 years.
    • Including the current year of assessment and the preceding six years of assessment.
    • Failure to comply without reasonable excuse: Maximum fine of HK$100,000.

    Records to be Kept

    • All supporting documents for income (invoices, receipts, bank statements, contracts).
    • Expense records and receipts.
    • Bank statements and financial records.
    • Employment records (applicable to employers).
    • Property records (tenancy agreements, expenses).
    • Investment records (trade confirmations/contract notes, dividend statements).
    • Past tax returns and notices of assessment.
    • Correspondence records with the Inland Revenue Department.
    💡 Pro Tip: If your business has carried-forward losses, please retain the records for the loss-making year(s) until seven years after the losses are fully offset. This may require keeping records beyond the standard 7 years.

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    Common Types of Errors and Rectification Methods

    1. Omission of Income

    Example: Forgetting to report rental income or freelance income.

    • Calculate the exact amount of omitted income.
    • Gather supporting documents (tenancy agreements, payment records).
    • Submit a voluntary disclosure or notice of objection explaining the omission.
    • Include the recalculated tax payable.
    • Prepare to pay the additional tax and any penalties.

    2. Overclaiming Deductions

    Example: Claiming personal expenses as business deductions, or duplicating expense claims.

    • Identify the specific incorrect deduction items.
    • Calculate the correct allowable deduction amount.
    • Provide an explanation of how the error occurred.
    • Submit revised calculations along with supporting documentation.

    3. Calculation Errors

    Example: Computation errors resulting in underreported income or overclaimed deductions.

    • Show the original, incorrect calculation.
    • Show the correct calculation.
    • Explain the nature of the calculation error.
    • Such errors are generally treated more leniently as they are clearly inadvertent mistakes.

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    Director's Liability: The Ku Ming Kween Case (2022)

    An important development involves the liability of company directors for submitting incorrect tax returns. The Court of Final Appeal ruled in Commissioner of Inland Revenue v Ku Ming Kween (August 2022) that:

    • It is the company, not its director, that is under the obligation to submit a Profits Tax return.
    • A director who signs the company's tax return is not personally "making" or "submitting" the return.
    • Therefore, the director is not personally liable for Section 82A additional tax regarding inaccuracies in the company's tax return.
    • This applies even where the director may be required to sign the return pursuant to Section 57(1).
    ⚠️ Important Note: Although this ruling shields directors from Section 82A penalties regarding corporate tax returns, directors should still ensure that returns are accurate, as they may face other consequences under the Companies Ordinance and could still face criminal prosecution under other provisions of the Inland Revenue Ordinance for fraud or wilful intent to evade tax.

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    Tax Filing Reminders for the 2024/25 Year of Assessment

    For the 2024/25 year of assessment, the Inland Revenue Department issued approximately 2.66 million tax returns to individuals. Below are the key deadlines:

    Taxpayer Category Paper Filing Deadline "eTAX" Filing Deadline
    Salaries Tax (General) 2 June 2025 2 July 2025 (Automatic 1-month extension)
    Sole Proprietors 2 August 2025 2 September 2025 (Automatic 1-month extension)

    ✅ Key Takeaways

    • Act immediately: Rectify errors as soon as they are discovered—handling them before the Notice of Assessment is issued is much simpler.
    • Make good use of "eTAX": The "Make Request / Submit Information" function streamlines the rectification process.
    • Adhere to deadlines: The 1-month objection deadline after assessment is strictly enforced.
    • Section 70A safety net: If you miss the deadline, applications for correction are permitted within 6 years after the end of the year of assessment.
    • Voluntary disclosure works: Proactively reporting before the Inland Revenue Department discovers the error can significantly reduce penalties.
    • Understand penalties: Section 82A allows for a maximum penalty of up to treble the amount of tax undercharged, but cooperation can reduce penalties.
    • Keep proper records: Retain tax records for at least 7 years—this is key to substantiating corrections.
    • Director protection: Company directors do not incur personal liability for penalties under Section 82A for incorrect contents in a company's tax return.
    • Right of appeal: If an objection is rejected, an appeal may be lodged with the Board of Review within 1 month.
    • Seek professional assistance: For complex errors or penalty assessments, consult a tax professional.

    Making mistakes on tax returns is more common than many people think, but Hong Kong's tax system provides clear pathways for rectification. The key lies in acting promptly, remaining transparent, and following the proper procedures. Whether you are correcting a simple calculation error or addressing significant omissions, understanding your rights under the Inland Revenue Ordinance will help you minimize penalties while staying compliant. If in doubt, do not hesitate to seek professional guidance—it is an investment in peace of mind and proper compliance.

    📚 Sources

    The content of this article has been verified against official Hong Kong Government information and authoritative reference sources: