Business deduction for rent, repairs and taxes depends on tenancy status, actual payment, and whether expenditure is capital or revenue. Deduction is allowable for rent, rates, taxes, repairs and insurance in respect of premises used for business or profession, with the allowance depending on the assessee's relationship to the premises and the character of the expenditure. Land revenue, local rates or municipal taxes, rent, current repairs, and repairs borne by a tenant are allowable within the deduction framework, while capital expenditure on repairs is excluded from revenue deduction and is dealt with under the rules governing building cost or deemed building treatment. Proportionate restriction applies where the asset is partly used for business.