“real income theory”
The decision most relied on for real income theory is CIT v. Shoorji Vallabhdas & Co. (46 ITR 144), cited in 551 judgments on BharatTax.
Leading authorities on real income theory
Income tax is levied only on real income that actually materializes, not on hypothetical or notional income, even if accounting entries suggest otherwise. If no income results, there is no tax liability.
Income tax is levied on real income, which represents profits determined by ordinary commercial principles after permissible deductions, considering the probability of realization. This principle distinguishes real profits from statutory profits specified for other purposes under the Income-tax Act.
Interest income is taxable under the mercantile system of accounting even if it is not actually recovered, provided there is a right to receive it. The decision also touches upon the treatment of bad debts and provisions for doubtful debts under Section 36(1)(viia).
The Supreme Court holds that income tax is levied on real income, not on hypothetical or notional accrual. For income to be taxable, it must genuinely accrue or be received, taking into account the realistic probability of its realization.