The Mussoorie International School receives no government or private aid and the fee realised from the students is the only source of revenue. School fees is payable for 12 months and no deduction in fees is permissible for holidays or absence in school. Fee concession may be available only to deserving students as per the management decision. Fee is to be submitted during 1st to 15th of each month. Facility for one-time annual payment is also available. Those who fail to pay fees within the stipulated dates will be charged a monthly fine of rupees 50. If fee accounts are not properly balanced by the end of the year, the student will not be considered for the promotion. Fee once paid is not refundable under any circumstances. Parents are requested to retain the receipts issued to them as proof of payment.