3.The Assistant Commissioner of Income Tax, Corporate Circle 6(1), Chennai (for brevity “the ACIT”) vide letter dated 17.01.2018, had requested certain clarification pertaining to the retention money amounting to Rs.5,87,61,168/-, which was required to be added back to the assessed income. The ACIT further stated that since the petitioner was following percentage completion methods, the income as per percentage completion method to the tune of Rs.1,45,31,751/- is required to be assessed for the Assessment Year 2011-12. The petitioner preferred their reply to the said clarification by letter dated 12.02.2018 stating that the petitioner had incomplete projects worth Rs.2,92,00,91,516/-, out of which, the total expected retention money at the end of the project is Rs.11,14,43,711/-. These projects were completed on percentage completion method and a sum of Rs.5,87,61,167/- was deducted by the customer as retention money. This money would be paid by the customer only after the project is completed and defect curing period is completed. In other words, the amount will become due to the petitioner only after completion of warranty period. The amount of retention money has been accrued at the completion of project in the subsequent years. Moreover, the retention money has already been offered to tax in the subsequent period thereby vitiating the taxation of the same income during the impugned assessment year 2011-12.