June is a critical month for tax and compliance in India. This blog post provides a comprehensive, guide to the over 20 crucial deadlines for June 2025 across Income Tax, GST, Company Law (ROC), and Labour Laws. Learn how to stay compliant, avoid penalties, and ensure the financial well-being and smooth operation of your business. From TDS/TCS and advance tax payments to GST returns and ROC filings, we cover everything you need to know.

The GSTN requires that starting June 1, 2025, IRN generation for invoices be case-insensitive, which will involve converting all invoice numbers to uppercase to avoid duplication. Companies need to adjust their systems accordingly to ensure easier compliance with this new requirement.