Chapter XVII - Special Provisions Relating to Certain Persons
Section 343
Section 343: deemed accumulated income
Section 343 deals with the 15% of regular income a registered non-profit organisation is allowed to retain without applying or formally accumulating it under Section 342 - the Act treats this residual amount as "deemed accumulated income" and, if it is invested, requires it to follow the Section 350 investment rules.
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This article is for general information. Refer to the Income-tax Act, 2025 as amended by the Finance Act, 2026 and the Taxation and Other Laws (Amendment) Act, 2026 for the official provisions. If you need professional advice for your situation, contact Bizeneed.
Statutory text
Bare law
(1) The regular income, as reduced by the application of income as per the provisions of section 341 and accumulated or set apart income under section 342, to the extent of 15% of regular income, shall be considered as deemed accumulated income and where such deemed accumulated income is invested or deposited, it shall be invested or deposited in any of the modes permitted under section 350.
(2) The deemed accumulated income under this section shall not be considered as accumulated income for the purposes of section 342.
Introduction
Section 343 identifies the residual portion of regular income that is treated as deemed accumulated income, up to 15% of regular income, after application and section 342 accumulation.
If invested or deposited, that residual amount must use a section 350 permitted mode; it is distinct from an accumulation filed under section 342.
Key takeaways
The amount is limited
After application under Section 341 and accumulation or setting apart under Section 342, the residual amount treated as deemed accumulated income is limited to 15% of regular income.
Investment mode matters
Where deemed accumulated income is invested or deposited, it must use a mode permitted by Section 350.
It is separate from Section 342 accumulation
Section 343(2) says deemed accumulated income is not accumulated income for Section 342 purposes.
What Section 343 says
Sub-section (1): the regular income, as reduced by the application of income under Section 341 and the income accumulated or set apart under Section 342, to the extent of 15% of regular income, is considered deemed accumulated income - and where such deemed accumulated income is invested or deposited, it must be invested or deposited in a mode permitted under Section 350.
Sub-section (2): deemed accumulated income under this section is not considered accumulated income for the purposes of Section 342 - it is a separate concept and does not need the Section 342(1) statement or the 5-year accumulation procedure.
Calculate the residual 15% amount
Start with regular income, then reduce it by section 341 application and section 342 accumulation. The residual qualifies as deemed accumulated income only up to 15% of regular income.
Deemed accumulation is distinct from section 342
Subsection (2) says the section 343 amount is not treated as section 342 accumulated income. If the residual is invested or deposited, subsection (1) points to the modes allowed by section 350.
Step-by-step flow for working out deemed accumulated income under Section 343
- 1
Start with the regular income of the tax year
Take the regular income of the registered non-profit organisation for that tax year.
- 2
Reduce it by application and accumulation
Subtract the income applied under Section 341 and the income accumulated or set apart under Section 342.
- 3
Compare the balance with 15% of regular income
Under Section 343(1), the balance is deemed accumulated income only up to 15% of regular income.
- Balance is 15% or less: The whole balance is deemed accumulated income.
- Balance is more than 15%: Only 15% of regular income is deemed accumulated; the excess is outside Section 343 (see Section 336).
- 4
Is the deemed accumulated income invested or deposited?
- Yes: It must be in a mode permitted under Section 350 (Section 343(1)).
- No: Section 343 does not itself require investment, but if it is invested it must follow Section 350.
- 5
Keep it separate from Section 342 accumulation
Under Section 343(2), deemed accumulated income is not accumulated income for Section 342. It needs no Section 342 statement and is not tracked as a Section 342 tranche.
Practical checklist
Do
- Compute the residual after section 341 application and section 342 accumulation, subject to the 15% ceiling.
- Use section 350 modes if investing or depositing the deemed accumulated amount.
Avoid
- Treat deemed accumulation under section 343 as a separate section 342 election.
Illustrative example
Worked example: the 15% buffer
Hypothetical facts (illustration only, not a real taxpayer): A registered non-profit organisation has regular income of ₹40,00,000 for a tax year. It applies ₹28,00,000 under Section 341 and accumulates ₹4,00,000 under Section 342. All amounts are assumed.
Balance
₹40,00,000 − ₹28,00,000 − ₹4,00,000 = ₹8,00,000.
15% limit
15% of ₹40,00,000 = ₹6,00,000.
Deemed accumulated income
The balance of ₹8,00,000 is more than ₹6,00,000, so ₹6,00,000 is deemed accumulated income under Section 343(1).
Excess
The remaining ₹8,00,000 − ₹6,00,000 = ₹2,00,000 is not covered by Section 343. On a plain reading of Section 336(b), 85% of regular income is ₹34,00,000; application plus accumulation is ₹32,00,000, leaving ₹2,00,000 as taxable regular income.
Investment
If the ₹6,00,000 is kept in investments or deposits, they must be in modes permitted under Section 350.
Outcome
- Deemed accumulated income: ₹6,00,000. Shortfall outside Section 343: ₹2,00,000.
- Had the organisation applied ₹30,00,000 instead, the balance would be ₹6,00,000, exactly 15%, and all of it would be deemed accumulated.
Frequently asked questions
Does the 15% of regular income that isn't applied need a Section 342 accumulation statement?
No - Section 343(2) clarifies that deemed accumulated income (the 15% retained without being applied or formally accumulated) is not treated as accumulated income for the purposes of Section 342, so the Section 342 filing and 5-year procedure does not apply to it.
If the deemed accumulated income is invested, where must it go?
It must be invested or deposited in one of the modes permitted under Section 350.
Need help applying this provision to your situation?
Understand your organisation's 15% deemed accumulated incomeLast updated 9 October 2026