ICDS application: accounting standards govern business income computation for exempt trusts, triggering ICDS when commercial books are maintained.

ICDS do not apply to the standalone computation of exemption for charitable entities based on the commercial concept of income; however, when income is taxed under the regular heads, ICDS apply to income classified under Profits and Gains of Business or Profession and Income from Other Sources if books are kept on the mercantile system. If a trust carries on incidental business with separate books, business income must be computed on a commercial basis and ICDS apply to that business income despite entitlement to charitable exemption.

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