Form 18 is an application prescribed under Section 46 of the Income-tax Act, 2025 for seeking notification of an affordable housing project as a specified business to avail tax benefits on eligible expenditure. It must be filed by an assessee carrying on or proposing to carry on such a project, and filing is mandatory to claim benefits under the section. The form requires detailed particulars of the assessee, specified business, and project, including location, number of units, category-wise rentable area, common facilities, and total allocable area. It also requires disclosure of whether the project is in a specified city, whether it is independent or part of another project, and details relating to land ownership and development agreements. Applicants must also furnish investment details, project commencement timelines, and confirm compliance with conditions prescribed under Rule 36(5).
The form facilitates verification of eligibility and compliance, supported by documents such as development agreements, project sanction letters, and layout approvals. It must be filed electronically and verified by the applicant or authorised signatory, with certain fields pre-filled from tax records. The application undergoes scrutiny by the Income-tax Department to assess compliance with statutory conditions. Upon satisfaction, the project is notified as a specified business, enabling the assessee to claim tax benefits under Section 46. If conditions are not met, the application may be rejected. Furnishing incorrect information can result in denial or withdrawal of notification and action under the Act. Overall, Form 18 ensures structured reporting, regulatory oversight, and transparency in granting tax incentives for affordable housing projects.
Income Tax Department
Ministry of Finance, Government of India
FAQs on Income Tax Form 18 – Application for notification of affordable housing project as specified business under section 46 of Income Tax Act, 2025
Application for notification of affordable housing project as specified business under section 46
| Name of form as per I.T. Rules, 1962 | Form 3CN | Name of form as per I.T. Rules, 2026 | 18 |
| Corresponding section of I.T. Act, 1961 | 35AD | Corresponding section of I.T. Act, 2025 | 46 |
| Corresponding Rule of I.T. Rules, 1962 | 11-OA | Corresponding Rule of I.T. Rules, 2026 | 36 |
Q.1 What is Form 18?
Ans: Form 18 is prescribed for making an application for notification of an affordable housing project as a specified business under section 46 of the Income-tax Act, 2025, in order to avail the tax benefits provided thereunder.
Q.2 Who is required to file Form 18?
Ans: Form 18 is required to be filed by an assessee who seeks notification of an affordable housing project, which is carried on or proposed to be carried on by him, as a specified business under section 46 of the Act.
Q.3 Is filing of Form 18 mandatory for claiming benefits under section 46?
Ans: Yes. Notification of the affordable housing project through Form 18 is mandatory for claiming benefits under section 46 of the Income-tax Act, 2025.
Q.4 What are the main parts of Form 18?
Ans: Form 18 consists of the following parts:
- Particulars of the assessee,
- Particulars of the specified business,
- Details of the proposed project,
- Fulfilment of prescribed conditions,
- Other project-related details, and
- Declaration by the applicant.
Q.5 What basic details of the assessee are required to be furnished?
Ans: The assessee is required to furnish details such as:
- Name and address,
- Permanent Account Number (PAN),
- Status and residential status,
- Email address and contact number.
Q.6 What information relating to the specified business is required in Form 18?
Ans: The applicant is required to provide:
- Name and address of the specified business,
- Name of the affordable housing project,
- Complete address of the project, and
- Whether the project is located in a specified city.
Q.7 What details of the proposed project are required to be furnished?
Ans: Form 18 requires disclosure of:
- Location of the affordable housing project,
- Total number of units of the project,
- Category-wise rentable area (EWS, LIG, MIG, other residential or commercial),
- Area earmarked for common facilities and services, and
- Total allocable rentable area.
Q.8 What are the conditions to be fulfilled for notification of an affordable housing project?
Ans: The applicant must ensure that the affordable housing project satisfies the conditions prescribed under rule 36(5).
Q.9 How is compliance with area-related conditions to be reported?
Ans: Compliance is to be reported by furnishing category-wise details of units and rentable area, and by confirming fulfilment of percentage thresholds prescribed under the rules.
Q.10 What other project-related details are required in Form 18?
Ans: The applicant is required to furnish details such as:
- Proposed investment,
- Expected and actual date of commencement of the project,
- Existence of any adjacent or nearby land or project, and
- Whether the project is a separate identifiable area.
Q.11 Is it necessary to specify whether the project is independent or part of another project?
Ans: Yes. The applicant must clearly state whether:
- The project is independent, or
- It is an extension or part of another project.
Q.12 What details regarding ownership or title of land are required?
Ans: The applicant must specify the nature of title held on the land on which the affordable housing project is situated.
Q.13 Are details of development agreements required to be furnished?
Ans: Yes. Where the project is developed under any agreement, the applicant must:
- Indicate the existence of such agreement,
- Furnish details of other parties to the agreement, and
- Attach a copy of the agreement.
Q.14 Is a declaration required to be furnished in Form 18?
Ans: Yes. The applicant is required to furnish a declaration undertaking to continue to operate the affordable housing project during the period for which benefits under section 46 are availed, and certifying the correctness of the information furnished.
Q.15 In what currency should amounts be reported in Form 18?
Ans: All monetary amounts should be reported in Indian Rupees (₹) unless otherwise specified.
Q.16 Who is authorised to sign and verify Form 18?
Ans: Form 18 shall be signed and verified by the applicant or an authorised signatory, mentioning the name and designation.
Q.17 Is any information in Form 18 pre-filled?
Ans: Yes. Certain information in the particulars of the assessee may be pre-filled based on records available with the Income-tax Department. However, the applicant is responsible for ensuring accuracy of all details furnished.
Q.18 What are the consequences of furnishing incorrect information in Form 18?
Ans: Furnishing incorrect or false information may result in denial or withdrawal of notification under section 46 and may also attract action under the relevant provisions of the Income-tax Act, 2025.
Q.19 Why is Form 18 important?
Ans: Form 18 enables:
- Statutory notification of affordable housing projects,
- Verification of compliance with prescribed conditions, and
- Grant of tax benefits to eligible projects under section 46, thereby supporting affordable housing objectives.
Guidance Note on Income Tax Form 18 – Application for notification of affordable housing project as specified business under section 46 of Income Tax Act, 2025
Application for notification of affordable housing project as specified business under section 46 of the Act
| Name of form as per I.T. Rules, 1962 | Form 3CN | Name of form as per I.T. Rules, 2026 | 18 |
| Corresponding section of I.T. Act, 1961 | 35AD | Corresponding section of I.T. Act, 2025 | 46 |
| Corresponding Rule of I.T. Rules, 1962 | 11-OA | Corresponding Rule of I.T. Rules, 2026 | 36 |
Purpose
Form No. 18 is prescribed for making an application for notification of an affordable housing project as a specified business under section 46 of the Act.
Notification of the project as a specified business enables the applicant to avail the tax benefits provided under section 46 in respect of eligible expenditure incurred for such business.
The form captures information relating to the applicant, the specified business, and the affordable housing project, and facilitates verification of compliance with the conditions prescribed under the rules.
Who Should File
Form No. 18 is required to be furnished by an assessee who seeks notification of an affordable housing project, carried on or proposed to be carried on by the applicant, as a specified business under section 46 of the Act.
Filing of the form is mandatory for making an application for notification of the project for the purposes of claiming the benefits under section 46.
Structure of Form
Form No. 18 consists of the following main parts:
1. Particulars of the assessee
2. Particulars of the specified business
3. Details of proposed project
4. Fulfilment of conditions
5. Other details
6. Declaration
What are the documents required to file the Form
The following documents may be required to be attached as annexures to Form No. 18:
1. Copy of the agreement relating to development of the project, where applicable.
2. Letter of sanction of the project issued by the competent authority under the Affordable Housing in Partnership Scheme.
3. Letter of approval of layout and specifications including design of the project issued by the State Government or Union Territory Government or its designated implementing agency.
These documents assist in verification of the eligibility of the project for notification under section 46.
What is the process flow of filing Form
The process flow broadly involves the following steps:
1. The applicant prepares Form No. 18 by furnishing the required information relating to the assessee, the specified business and the affordable housing project.
2. Relevant supporting documents and annexures are attached to the form wherever required.
3. The completed form is furnished electronically through the income-tax e-filing portal in the manner prescribed.
4. The application is examined by the Income-tax Department to verify compliance with the provisions of section 46 and the conditions prescribed under rule 36.
5. Based on such examination, the competent authority may grant notification of the project as a specified business under section 46, subject to satisfaction of the prescribed conditions.
Outcome of Processed Form
Upon processing of the application:
- If the project satisfies the prescribed conditions, the affordable housing project may be notified as a specified business under section 46.
- Upon such notification, the applicant may claim the tax benefits available under section 46 in respect of the eligible expenditure incurred for the project.
- In cases where the conditions prescribed under the Act or rules are not fulfilled, the application may not be approved.
Common Changes made across Forms
1. To make Forms system-friendly and enable e-filing and uploading, certain anomalies found due to grouping of Name, Designation, Address, PAN and Aadhaar number have been separated into different boxes.
2. Assessment / Financial / Previous year or years have been replaced with Tax year or years, wherever appearing in the Form/Annexure.
3. Sections, Clauses and Schedules changes as per the Income-tax Act, 2025.
4. Currency symbol “Rs.” has been replaced with “₹”.
