It then covers tax payments, collection, and refunds, including how Tax Deducted at Source (TDS), advance tax, and self-assessment tax work across both laws. Next come rules for furnishing income tax returns during the transition year, belated filings, and revised returns. The document explains other forms and compliance statements, followed by reassessment of income escaping assessment, including pending cases and fresh notices after 1 April 2026. TDS compliance gets its own detailed section on quarterly statements and certificates from both the payer and payee sides.