Tax exemption recognition under section 10(23C)(iv) requires exclusive charitable application, permitted investments, and return filing. Notification under section 10(23C)(iv) notifies Indian Merchants Chamber, Mumbai for AY 1998-99 to 2000-01 subject to conditions: apply or accumulate income wholly and exclusively to its objects; invest or deposit funds only in forms specified in section 11(5) (excluding certain voluntary contributions held as jewellery or furniture); treat business income as taxable unless incidental and maintained in separate books; regularly file returns under the Income-tax Act; and on dissolution transfer surplus and assets to a charitable organisation.