Detailed Analysis
Direct and regular plans of the same mutual fund invest in the exact same portfolio, with the same fund manager. The only difference is cost.
Direct plans eliminate the distributor commission, passing the savings to you. A seemingly small 1% annual difference compounds to a massive gap: ₹10,000 SIP for 20 years at 12% (direct) = ₹99.9L vs 11% (regular) = ₹86.5L. That's ₹13.4 lakh lost to commissions.
Regular plans include distributor commission (trail commission of 0.5-1% annually). The distributor may provide advice, but this advice isn't always in your best interest since they earn more from certain funds.