Nowadays only ongoing commission is paid to the mutual fund distributors. The commission is paid on a monthly basis on the scheme AUM of the distributor. This means that as long as you remain invested, your distributor / financial advisor will receive commissions based on the market value of your holdings. This commission is added to the TER which is adjusted from the daily NAV of your scheme. In other words, the investment value of your regular mutual fund schemes, at any point of time includes the commissions paid to the distributor.