Undisclosed income declared not to be included in total income.

188. The amount of undisclosed income declared in accordance with section 183 shall not be included in the total income of the declarant for any assessment year under the Incometax Act, if the declarant makes the payment of tax and surcharge referred to in section 184 and the penalty referred to in section 185, by the date specified under sub-section (1) of section 187.