Sir that was prior to 1.4.2015
1. Its specifically mentioned in instructions that "Use ITR-2 or 2A, as applicable, if agricultural income exceeds Rs. 5,000"
Source
2. Extract from https://incometaxindiaefiling.gov.in/
3. Relevant rule is Rule 12
12. (1) The return of income required to be furnished under sub-section (1) or sub-section (3) or sub-section (4A) or sub-section (4B) or sub-section (4C) or sub-section (4D) or sub-section (4E) of section 139 or clause (i) of sub-section (1) of section 142 or sub-section (1) of section 148 or section 153A relating to the assessment year commencing on the 1st day of April, 14 2015 shall,—
[(a) |
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in the case of a person being an individual where the total income includes income chargeable to income-tax, under the head,— |
(i) |
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"Salaries" or income in the nature of family pension as defined in the Explanation to clause (iia) of section 57; or |
(ii) |
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"Income from house property", where assessee does not own more than one house property and does not have any brought forward loss under the head; or |
(iii) |
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"Income from other sources", except winnings from lottery or income from race horses [and does not have any loss under the head], |
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be in Form [SAHAJ] (ITR-1) and be verified in the manner indicated therein:] |
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[Provided that the provisions of this clause shall not apply to a person who,— |
(I) |
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is a resident, other than not ordinarily resident in India within the meaning of sub-section (6)* of section 6 and has,— |
(i) |
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assets (including financial interest in any entity) located outside India; or |
[ (ii) |
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signing authority in any account located outside India; or |
(iii) |
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income from any source outside India; ] |
(II) |
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has claimed any relief of tax under section 90 or 90A or deduction of tax under section 91; or |
[ (III) |
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has agricultural income, exceeding five thousand rupees; ] |
On side note
Clause (III) substituted by the Income-tax (Eighth Amendment) Rules, 2015, w.r.e.f. 1-4-2015. Prior to its substitution, said clause read as under :
"(III) has income not chargeable to tax, exceeding five thousand rupees;"