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                        16A Prescribed authority for approving any institution or body established for scientific research
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                        16B Prescribed authority for the purposes of clauses (8A) and (8B) of section 10
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                        16C Requirements for approval of a fund under section 10(23AAA)
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                        16CC Prescribed form of audit report under tenth proviso to section 10(23C)
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                        16D   Form of Report for claiming deduction under section 10A
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                        16DD   Form of particulars to be furnished along with return of income for claiming deduction under clause (b) of sub-section (1B) of section 10A
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                         16E   Form of Report for claiming deduction under section 10B
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                        16F   Form of Report for claiming deduction under section 10BA
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                        17 Exercise of option etc under section 11.
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                        17A Application for registration of charitable or religious trusts, etc.
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                        17B   Audit report in the case of charitable or religious trusts, etc.
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                        17C Forms or modes of investment or deposits by a charitable or religious trust or institution
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                        17D   Prescribed foreign projects for the purposes of deduction in respect of profits and gains from projects outside India under section 80HHB
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                        18 Accommodation and amenities to be provided by hotels.
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                        18A Prescribed authority to certify the daily average number of rehabilitated employees in an industrial undertaking.
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                        18AA Prescribed authority for approval of a hotel under section 80CC.
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                        18AAA Prescribed authority for approval of a University or any educational institution of national eminence for the purpose of section 80G
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                        18AAAA Prescribed authority for the purpose of receiving separate accounts from trusts or funds or institutions for providing relief to the victims of earthquake in Gujarat
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                        18AAAAA Guidelines for specifying an association or institution for the purposes of notification under clause (c) of sub-section (2) of section 80G
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                        18AAB   Prescribed authority for approval of companies engaged in Scientific and Industrial Research and Development for the purposes of section 80-IA 
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                        18B   Form of audit report for claiming deduction under section 80HH 
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                        18BB Form of audit report for claiming deduction under section 80HHA 
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                        18BBA Form of reports for claiming deduction under section 80HHB or under section 80HHC or under section 80HHD and prescribed authority under section 80HHD
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                        18BBB Form of audit report for claiming deduction under section 80-I or section 80-IA or section 80-IB 
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                        18BBC Prescribed authority for approval of hotels located in certain areas 
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                        18BBD   Prescribed authority for approval of companies carrying on Scientific and Industrial Research and Development 
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                        18BBE Computation of profits of certain activities forming integral part of a highway project for the purpose of section 80-IA  
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                        18C Eligibility of Industrial Parks for benefits under section 80-IA (4)(iii) 
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                        18D Prescribed authority for approval of companies carrying on scientific research and development 
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                        18DA Prescribed conditions for deduction under sub-section (8A) of section 80-IB 
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                        18DB Prescribed area, facilities and amenities for multiplex theatres and particulars of audit report, for deduction under sub-section (7A) and clause (da) of sub-section (14) of section 80-IB 
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                        18DC Prescribed area, facilities and amenities for convention centres and particulars of audit report, for deduction under sub-section (7B) and clause (aa) of sub-section (14) of section 80-IB 
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                        18DD   Form of report for claiming deduction under sub-section (11B) of section 80-IB 
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                        18DE Prescribed area, minimum seating capacity, facilities and amenities for convention centres; minimum number of convention halls in the convention centres; and particulars of audit report, for deduction under section 80-ID 
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                        19 Computation of capital employed in an industrial undertaking or a hotel.
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                        19A Computation of capital employed in an industrial undertaking or a ship or the business of a hotel for the purposes of section 80J.
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                        19AB Form of report for claiming deduction under section 80JJAA 
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                        19AC   Form of certificate to be furnished under sub-section (3) of section 80QQB
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                        19AD   Prescribed authority for purposes of sub-section(2) of section 80RRB and form of certificate to be furnished under sub-section(2) of section 80RRB 
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                        19AE   Form of report of accountant to be furnished under sub-section(3) of section 80LA 
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                        20 Guidelines for approval under clause (xix) of sub- section (2) of section 80C or under clause (xvi) of sub-section (2) of section 88 
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                        20A Guidelines for approval under clause (xx) of sub- section (2) of section 80C or under clause (xvii) of sub-section (2) of section 88 
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                        20AB   Evidence of payemnt of security transaction tax for claiming deduction under section 88E 
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                        21 Limits for life insurance premia in the case of authors, etc.
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                        21A Relief when salary is paid in arrears or in advance, etc. 
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                         21AA   Furnishing of particulars for claiming relief under section 89(1) 
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                        21B Relief when interest on securities is received in arrears.
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                        18DDA Form of report for claiming deduction under sub-section (11C) of section 80-IB
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                        21AB Certificate for claiming relief under an agreement referred to in section 90 and 90A
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                        17CA Functions of Electoral Trusts
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                        21AC Furnishing of authorisation and maintenance of documents etc. for the purposes of section 94A.
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                        17CB Method of valuation for the purposes of sub-section (2) of section 115TD
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                        21AD Exercise of option under sub-section (4) of section 115BA
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                        21AE. Exercise of option under sub-section (5) of section 115BAA
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                        21AF. Exercise of option under sub-section (7) of section 115BAB.
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                        21AG Exercise of option under sub-section (5) of section 115BAC
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                        21AH Exercise of option under sub-section (5) of section 115BAD
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                        18AB. Furnishing of Statement of particulars and certificate
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                        21AI Computation of exempt income of specified fund for the purposes of clause (4D) of section 10
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                        21AJ Determination of income of a specified fund attributable to units held by non-residents under sub-section (1A) of section 115AD
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                        21AK Conditions for the purpose of clause (4E) of section 10
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                        21AJA Computation of exempt income of specified fund, attributable to the investment division of an offshore banking unit, for the purposes of clause (4D) of section 10 of the Act
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                        21AJAA Determination of income of a specified fund attributable to the investment division of an
                      | 
	
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                        21AAA Taxation of income from retirement benefit account maintained in a notified country
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                        21AIA Other conditions required to be fulfilled by a specified fund referred to in clause (4D) of section
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                        21AL  Other Conditions required to be fulfilled by the original fund
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                        17AA Books of account and other documents to be kept and maintained
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                        21AGA Exercise of option under sub-section (6) of section 115BAC
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                        21ACA  “Conditions and activities for the Finance Company located in any International Financial Services Centre
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                        21AHA.   Exercise of option under sub-section (5) of section 115BAE
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