Immigration Rules, 2051 (1994)
Rule 21
Notice To Be Given For Cancellation Of Visa
In a case where a foreigner who has obtained a visa of any category other than the  tourist visa becomes unable to spend the term of the visa granted to him or her due to any reason, the concerned foreigner or the chief of office concerned with his or her business shall have to give a notice to the visa issuing authority within Seven days for the cancellation of such a visa.
Immigration Rules, 2051 (1994)
Chapter - 2
Rule 3: powers Of The Government Of Nepal To Grant Or Refuse To Grant VisaRule 4: Diplomatic VisaRule 5: Official VisaRule 6: Tourist VisaRule 7: Study VisaRule 8: Non-tourist VisaRule 9: Business VisaRule 10: Transit VisaRule 10A: Non-residential Nepalese VisaRule 11: Residential VisaRule 12: Visa Issuing, Regulating And Renewing AuthorityRule 13: Power To Refuse To Issue Visa Or To Grant Permission To Enter Into NepalRule 14: Power To Prohibit Departure From NepalRule 15: Points Of Entry Or DepartureRule 16: Arrival And Departure Forms To Be Filled UpRule 17: Certification Of Arrival And DepartureRule 18: Documents Required To Be ShownRule 19: Requirement To Register Presence And Give Notice Of Change In AddressRule 20: Restriction To WorkRule 21: Notice To Be Given For Cancellation Of VisaRule 22: Regularization Of VisaRule 23: Power To Change Visa CategoryRule 24: Power To Make Recommendation For And Issue Visa ProvisionallyRule 25: Power To Issue Travel PermitRule 26: Transfer Of VisaRule 27: Application For Extension Of Term Of VisaRule 28: Circumstances Where Visa May Be CancelledRule 29: FeesRule 30: Provision On Facility Of Single Entry, ………… Or Multiple EntryRule 31: Exemption From Visa Fees