1.  Nature of operations
 
 IRB Infrastructure Developers Limited is a Company incorporated in 1998
 under the Companies Act, 1956.  During the year, the Company was
 engaged in carrying out the construction works of it''s certain
 subsidiaries as per EPC contract entered between the Company and the
 subsidiaries and collection of toll from Toll Plazas as perthe contract
 entered with the regulatory authorities. The Company is the Holding
 Company, with subsidiaries engaged in development of various
 infrastructure projects.
 
 2.  Basis of preparation
 
 The financial statements have been prepared to comply in all material
 respects with the Accounting Standards notified by the Companies
 (Accounting Standards) Rules, 2006 (as amended) and the relevant
 provisions of the Companies Act, 1956. The financial statements have
 been prepared under the historical cost convention on an accrual basis.
 The accounting policies have been consistently applied by the Company
 and are consistent with those used in the previous years except for
 change in accounting policy explained below.
 
 4 Segment reporting-
 
 As permitted by paragraph 4 of Accounting Standard-17, Segment
 Reporting, notified by the Companies (Accounting Standard) Rules, 2006
 (as amended), if a single financial report contains both consolidated
 financial statements and the separate financial statements of the
 parent, segment information need to be presented only on the basis of
 the consolidated financial statements. Thus, disclosure required by
 Accounting Standard-17, Segment Reporting are given in consolidated
 financial statements.
 
 a.  Terms/rights attached to equity shares
 
 The Company has only one class of equity shares having par value of Rs.
 10/- per share. Each holder of equity shares is entitled to one vote
 per share.
 
 The Company declares and pays dividend in Indian rupees. The dividend
 proposed by the Board of Directors is subject to the approval of the
 shareholders in the ensuing Board Meeting.
 
 During the year ended March 31, 2012, the amount of per share dividend
 recognised as distributions to equity shareholders was Rs. 1.80 (For the
 year ended March 31, 2011: Rs. 1.50).
 
 In the event of liquidation of the Company, the holders of equity
 shares will be entitled to receive remaining assets of the Company,
 after distribution of all preferential amounts. The distribution will
 be in proportion to the number of equity shares held by the
 shareholders.
 
 NOTE NO. 3 : GRATUITY AND OTHER POST-EMPLOYMENT BENEFIT PLANS
 
 (a) Defined contribution plan
 
 Amount recognized as an expense in Statement of Profit and Loss Rs.
 5,281,325 (Previous yearRs. 3,431,168) on account of provident fund.
 There are no other obligations other than the contribution payable to
 the respective authorities.
 
 (b) Defined benefit plan
 
 The Company has an unfunded defined benefit gratuity plan. Every
 employee who has completed five years or more of service gets a
 gratuity on departure at 15 days salary (last drawn salary) for each
 completed year of service as per the provision of the Payment of
 Gratuity Act, 1972 with total ceiling on gratuity of Rs. 1,000,000/-.
 The following tables summaries the components of net benefit expense
 recognised in the statement of profit and loss and the funded status
 and amounts recognised in the balance sheet for the gratuity plan.
 
 NOTE NO. 4 : GRATUITY AND OTHER POST-EMPLOYMENT BENEFIT PLANS (Contd.)
 
 The estimates of future salary increases, considered in actuarial
 valuation, take account of inflation, seniority, promotion and other
 relevant factors, such as supply and demand in the employment market.
 
 The overall expected rate of return on assets is determined based on
 the market prices prevailing on that date, applicable to the period
 over which the obligation is to be settled. There has been significant
 change in expected rate of return on assets due to change in the market
 scenario.
 
 NOTE NO. 5 : Gross income from agency toll collection is Rs.
 975,272,420/- (Previous year Rs. 210,688,649/-) and gross payment of toll
 to NHAI Rs. 998,493,509/- (Previous year Rs. 198,853,397/-).
 
 NOTE NO. 6 : LEASES
 
 Rent/lease payments under operating lease are recognised as an expense
 in the statement of Profit and Loss on a straight-line basis over the
 lease term.
 
 NOTE NO. 7 : RELATED PARTY DISCLOSURES - 
 
 a) Names of Related Parties Subsidiaries
 
 Aryan Toll Road Private Limited
 
 ATR Infrastructure Private Limited
 
 IDAA Infrastructure Private Limited
 
 Ideal Road Builders Private Limited
 
 IRB Infrastructure Private Limited
 
 Mhaiskar Infrastructure Private Limited
 
 Modern Road Makers Private Limited
 
 Thane GhodbunderToll Road Private Limited
 
 Aryan Infrastructure Investment Private Limited
 
 NKT Road & Toll Private Limited
 
 IRB Surat DahisarTollway Private Limited
 
 IRB Ahmedabad Vadodara Super Express Tollway Private Limited
 (incorporated on May 31, 2011)
 
 IRB Kolhapur Integrated Road Development Company Private Limited
 
 Aryan Hospitality Private Limited
 
 IRB Sindhudurg Airport Private Limited
 
 IRB Pathankot AmritsarToll Road Private Limited
 
 IRB Talegaon Amravati Tollway Private Limited
 
 IRB Jaipur Deoli Tollway Private Limited
 
 IRB Goa Tollway Private Limited
 
 IRB TumkurChitradurga Tollway Private Limited
 
 MRM Cement Private Limited
 
 MMKToll Road Private Limited
 
 J J Patel Infrastructural and Engineering Private Limited (w.e.f.
 November 28, 2011)
 
 Key Management Personnel
 
 Mr. Virendra D. Mhaiskar and Mr. Mukeshlal Gupta
 
 Relatives of Key Management Personnel
 
 Mrs. D. V. Mhaiskar (Wife of Mr. Virendra D. Mhaiskar) Mr. D. R
 Mhaiskar (Father of Mr. Virendra D. Mhaiskar) Mrs. S. D. Mhaiskar
 (Mother of Mr. Virendra D. Mhaiskar) Mr. J. D. Mhaiskar (Brother of Mr.
 Virendra D. Mhaiskar) Mr. S. G. Kelkar (Father-in-law of Mr. Virendra
 D. Mhaiskar)
 
 Enterprises Owned or significantly influenced by key management
 personnel or their relatives
 
 A.J. Tolls Private Limited, Anuya Enterprises, D.S. Enterprises,
 Deepali Construction, Dattakrupa Enterprises, Global Safety Vision
 Private Limited, Ideal Infoware Private Limited, Ideal Softtech Park
 Private Limited, JDV Finlease Private Limited, Ideal Toll and
 Infrastructure Private Limited, J.D. Mhaiskar (HUF), Jan Transport,
 Jayant Construction Company, JDV Udyog, MEP Infrastructure Private
 Limited, Mhaiskar Udyog, Rideema Enterprises, Rideema Toll Private
 Limited, VD. Mhaiskar (HUF)/Aryan Construction, VCR Toll Services
 Private Limited, Virendra Builders, D.R Mhaiskar (HUF), Ideal Energy
 Projects Limited, Ideal Hospitality Private Limited, Raima Ventures
 Private Limited, Sudha Productions, MAASK Entertainment Private
 Limited, MEP Infrastructure Developers Private Limited, IEPL Power
 Trading Company Private Limited, Ideal Brands Private Limited.
 
 NOTE NO. 8 : PREVIOUS YEAR FIGURES
 
 Till the year ended March 31, 2011, the Company was using pre-revised
 Schedule VI to the Companies Act, 1956, for preparation and
 presentation of its financial statements. During the year ended March
 31, 2012, the revised Schedule VI notified under the Companies Act,
 1956, has become applicable to the Company. Except accounting for
 dividend on investments in subsidiaries, the adoption of revised
 Schedule VI does not impact recognition and measurement principles
 followed for preparation of financial statements. However, it
 significantly impacts presentation and disclosures made in the
 financial statements, particularly presentation of Balance Sheet. The
 Company has reclassified previous year figures to conform to this
 year''s classification.