Reduced GST interest rates provide temporary lower interest for delayed returns for specified periods and turnover categories. Amendment to the Union Territory GST notification temporarily lowers interest rates on delayed tax payment and return filing for March-May 2021 by creating turnover- and return-type specific slabs: taxpayers above the turnover threshold, taxpayers up to the threshold filing under section 39(1) or its proviso, and taxpayers under section 39(2) receive an initial reduced-interest grace window followed by higher rates; wording and table headings are also amended. The amendment is effective from 18 May 2021.