Section 105 of the Income Tax Act is mainly a definition section. It explains how certain words and phrases should be understood when used in related tax provisions. Instead of creating a tax liability directly, it supports other sections by clarifying the meaning of important terms.
In tax law, definitions are critical. A single word can change the tax outcome. Because of this, Section 105 ensures that there is a uniform understanding when officers, courts, and taxpayers read connected rules.
This section works like a reference point. When a related provision uses a specific word, the meaning is taken from Section 105 rather than general dictionary meaning.
Why Definition Sections Like Section 105 Are Important
Many taxpayers focus only on sections that talk about tax rates, deductions, or penalties. But definition sections like Section 105 are equally important because they shape interpretation.
Tax disputes often happen because two parties understand a word differently. A definition section removes that confusion. It creates a fixed meaning for legal use.
Without definition sections:
- Different officers may interpret the same term differently
- Courts may face ambiguity
- Tax planning becomes uncertain
- Compliance becomes harder
Section 105 helps prevent these problems by giving clarity in interpretation.
Purpose of Section 105 in Tax Law
The main purpose of Section 105 is to create clarity and consistency. Tax laws are interconnected. One section often refers to another. If the meaning of a term changes from place to place, the law becomes unstable.
Section 105 supports:
- Uniform interpretation
- Legal certainty
- Reduced disputes
- Better compliance
- Easier administration
It ensures that when a term appears in connected provisions, it carries the same legal meaning every time.
How Section 105 Is Used in Practice
Section 105 is not usually applied alone. It is used when reading or applying other related provisions. Tax officers, chartered accountants, and legal professionals check definition sections first before interpreting a rule.
In practice, the process works like this:
- A tax section uses a technical word
- That word is defined in Section 105
- The definition is applied instead of common meaning
- Tax treatment is decided based on that defined meaning
This method keeps interpretation structured and legally correct.
Legal Interpretation and Section 105
In tax litigation, courts often refer to definition sections before giving judgments. Judges first check whether a term is defined in the Act. If it is defined, that meaning must be followed.
Only when a word is not defined does the court use general meaning or commercial understanding.
Because of this, Section 105 has strong interpretative value even though it does not directly impose tax.
Difference Between Charging Section and Definition Section
Many people confuse different types of sections in the Income Tax Act. It is helpful to understand how Section 105 is different from other types.
Here is a simple comparison:
| Type of Section | Purpose | Example Function |
|---|---|---|
| Charging Section | Creates tax liability | Says income is taxable |
| Deduction Section | Allows benefit | Reduces taxable income |
| Penalty Section | Imposes penalty | Charges fine for default |
| Definition Section (like Sec 105) | Explains meanings | Clarifies terms used |
Section 105 falls into the definition category, not charging or penalty category.
How Section 105 Helps Tax Professionals
Tax professionals depend heavily on correct interpretation. Section 105 helps them in many ways.
It supports accurate advisory work. When advising clients, professionals must rely on legal definitions instead of assumptions.
It also supports documentation and reporting. When preparing tax returns, audit reports, or legal submissions, correct meaning of terms is essential.
It also reduces compliance risk. Using defined meanings reduces chances of misreporting.

How Section 105 Helps Taxpayers
Even individual taxpayers benefit from definition sections. Though many people do not read the law directly, understanding the importance of defined terms helps in better compliance.
It helps taxpayers:
- Understand technical notices
- Read tax provisions more clearly
- Avoid misunderstanding legal language
- Ask better questions to advisors
- Avoid wrong tax positions
Simple understanding of legal definitions improves overall tax awareness.
Common Misunderstandings About Sections Like 105
One common mistake is assuming that every section creates a tax rule. That is not correct. Some sections only define terms.
Another mistake is ignoring definition sections completely. This can lead to wrong interpretation of connected provisions.
Some people also use dictionary meaning instead of legal meaning. In tax law, defined meaning always comes first.
Section 105 prevents these errors when used correctly.
Relationship With Other Sections
Definition sections are usually linked to specific chapters or groups of provisions. Section 105 supports interpretation of related tax rules where the defined terms are used.
Whenever a related section uses a word covered under Section 105, that meaning applies automatically.
This cross-reference structure is common in tax legislation and ensures consistency across the Act.
Importance for Legal and Tax Disputes
In tax disputes, interpretation is everything. A small difference in meaning can change tax outcome significantly.
Definition sections like Section 105 often become central in appeals and court cases. Lawyers check whether a term is defined and whether the department applied the correct meaning.
If the wrong interpretation is used, the assessment can be challenged.
Because of this, Section 105 has practical importance beyond theory.
Practical Reading Tip for Tax Law Users
When reading any Income Tax provision, follow this simple method:
First read the main section carefully.
Then check if any words are defined elsewhere.
Look at the definition section like Section 105 if referenced.
Apply the defined meaning.
Then interpret the provision again.
This method gives more accurate understanding.
Summary
Section 105 of the Income Tax Act is a definition-based provision that explains how certain terms must be understood when used in related tax rules. It does not directly create a tax charge or deduction. Instead, it supports interpretation and ensures uniform meaning across connected provisions.
Its main value lies in clarity, consistency, and legal certainty. It helps tax officers, courts, professionals, and taxpayers read the law correctly. Definition sections may look small, but they play a powerful role in legal interpretation.
Understanding Section 105 improves accuracy in reading tax provisions and reduces confusion in compliance and dispute situations.
Also Read:
- Section 102 of the Income Tax Act
- Section 101 of the Income Tax Act
- Section 100 of the Income Tax Act
- Section 10 of the Income Tax Act
- Section 1 of the Income Tax Act
Frequently Asked Questions
What is Section 105 of Income Tax Act?
Section 105 of the Income Tax Act is a definition section. It explains the exact meaning of certain words used in related tax provisions. It does not directly charge tax but helps in proper interpretation and correct application of connected sections.
Why is Section 105 important in tax law?
Section 105 is important because tax law depends on precise meanings of terms. When a word is legally defined, that meaning must be followed instead of common language. This reduces confusion, supports uniform interpretation, and helps avoid tax disputes during assessment.
Does Section 105 create any tax liability?
No, Section 105 does not create any tax liability by itself. It only provides definitions for certain terms used in related provisions. Tax becomes payable under charging sections, while Section 105 only supports understanding and interpretation of those sections.
Who should understand Section 105?
Tax professionals, lawyers, students, and even regular taxpayers should understand Section 105. Knowing defined meanings helps in reading notices and provisions correctly. It also helps in better compliance and reduces the risk of wrong interpretation while filing returns.
How is Section 105 used in practice?
In practice, officers and professionals check Section 105 when a related provision contains a technical word. They apply the defined meaning instead of guessing. This ensures correct reading of the law and supports fair and consistent tax treatment.


