Income exclusion for political parties and electoral trusts hinges on recordkeeping, audit, prescribed donation modes, and distribution requirements. The Schedule excludes specified income from total income of registered political parties and electoral trusts where political parties maintain books and records, audit accounts, record contributor details for certain voluntary contributions, accept donations above a minimal amount only by prescribed bank/electronic modes or electoral bonds, submit the mandated report under the Representation of the People Act, and file the income-tax return timely; and where electoral trusts distribute a prescribed high-percentage of aggregate donations (including surplus carried forward) to registered political parties and operate under Central Government rules. 'Electoral bond' is defined by reference to the Reserve Bank explanation.