Personal Finance Stamp duty may make ELSS investments expensive; what should you do now? Updated : July 04, 2020 08:34 AM IST This stamp duty is applicable in all cases - whether the investor schedules a weekly SIP or a monthly SIP. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.