It is a declaration of a company's estimated taxable income to the Inland Revenue Authority of Singapore (IRAS). Companies are required to file their ECI within three months from the end of their financial year, unless they meet certain criteria that exempt them from doing so.   The ECI serves several purposes: Tax Assessment: It helps the IRAS assess and calculate the company's tax liability for the Year of Assessment (YA). Payment Schedule: It determines the schedule for payment of corporate income taxes, allowing companies to manage their tax obligations effectively. Compliance: Filing an ECI is a legal requirement, and companies failing to do so may incur penalties.   It's important to note that the ECI is an estimate of the company's taxable income and not the final tax amount. The final tax liability is determined based on the company's actual financial statements and other tax adjustments during the tax assessment process.   Our tax consultants can help your company estimate its taxable income for a specific Year of Assessment.