2026-09-15 · YN 상세페이지

Comprehensive Income Tax Filing: A Guide for Beginners

Filing your comprehensive income tax is something many people experience every year. However, for those who are filing for the first time, it can be complicated and challenging. With this guide, you can easily understand and prepare for the comprehensive income tax filing process.

Preparation and planning are key to comprehensive income tax filing.

What is Comprehensive Income Tax?

Comprehensive income tax is a tax imposed on the total income an individual earns in a year. This includes earned income, business income, interest income, dividend income, and more. This tax plays a crucial role in funding the government and local authorities. Comprehensive income tax must be filed by the end of May each year, determining the tax amount owed. Therefore, it's essential to clearly understand your income structure. For filing, you need to accurately ascertain the types and amounts of your income.

Preparation Materials for Filing

To file your comprehensive income tax, you need several preparation materials. First, gather all supporting documents related to your income. If you have earned income, you will need a withholding tax certificate, while business income earners should prepare their books and tax invoices. Additionally, do not forget to collect data on other income sources like financial income and rental income. If you have documentation for expenses, you can receive tax deductions, so it's helpful to keep relevant documents organized.

How to File

Comprehensive income tax can be filed through both online and offline methods. Online filing is available via the National Tax Service Home Tax portal. After logging into Home Tax, select 'Filing/Payment' and then 'Comprehensive Income Tax Return Preparation.' Offline filing involves visiting your nearest tax office to complete the tax return form. Each method offers its convenience, so choose according to your situation. Online filing is quick and easy, but offline filing allows for direct consultation with tax officials.

Filing Deadline and Extensions

The deadline for filing comprehensive income tax is May 31 each year. However, if you have special circumstances that make it difficult to file on time, you can apply for an extension. Extension requests can be made up until the filing deadline, allowing for a maximum extension of one month. Keep in mind that even if you apply for an extension, the final payment deadline remains unchanged, so caution is necessary. Thus, it is best to prepare in advance and file on time.

Tax Deductions and Exemptions

When filing comprehensive income tax, you can take advantage of various tax deductions and exemptions. For example, you can apply for deductions on medical expenses, education expenses, and donations, which can reduce your tax amount. Additionally, low-income households or families with multiple children may receive additional exemption benefits if they meet certain conditions. These benefits may change each year, so it's important to check the latest information before filing.

Common Mistakes and Prevention Methods

Common mistakes when filing comprehensive income tax include income omissions, incomplete supporting documents, and missing the filing deadline. To avoid these mistakes, it's important to record all income accurately and prepare necessary documents in advance. Also, completing your filing well before the deadline is advisable. Visiting the tax office or consulting a professional is also a great way to reduce mistakes.

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