The April 2025 GST updates have redefined compliance for Indian MSMEs—impacting everything from invoice timelines and credit note workflows to eligibility for tenders and government schemes. This guide explains what’s changed, why it matters, and how MSMEs can respond strategically. Key focus areas include UDYAM-GST linkage, credit note acknowledgments through IMS, the growing role of GST in vendor selection, and the minimum tech stack needed to stay tender-ready. Packed with real-world insights, a 90-day action plan, and overlooked compliance pitfalls, this piece helps MSMEs not just stay compliant—but stay competitive.