<h1>From 22-09-2025, Schedule I GST fixes 5% rate for solar water heaters and complete water heating systems</h1> Effective 22-09-2025, goods classified under Schedule I for GST include solar water heaters and complete solar water heating systems, which are subject to a 5% GST rate; this change is implemented by the relevant notification issued on 17-09-2025. The schedule entry narrows tax treatment to those specific renewable-energy water-heating products, altering their tax liability from prior rates and requiring suppliers and purchasers to apply the 5% integrated tax rate from the stated effective date.