DCC (Dynamic Currency Conversion) is a process where the Winvesta user raises funds in a foreign currency and then incurs an FX (foreign exchange) charge when converting it to INR. This FX charge typically ranges between 2-5%, depending on the provider.
On the other hand, MCC (Merchant Currency Conversion) is when the Winvesta user raises funds in INR, and the overseas client (payer) bears the FX charge when sending funds from their bank. The FX charge here varies from bank to bank but typically falls between 2-5%.
MCC is inherently better for Winvesta users since it passes the FX charge onto the end payer (the overseas client), meaning the Winvesta user does not have to bear the cost of currency conversion.