The term 'BILL ADDITION' is composed of three words: TIP, RIDER, and TAX. TIP stands for 'To Insure Promptness', which is an extra payment given to a service provider as a reward for good or prompt service. A RIDER is an additional clause or provision added to an existing contract or document. Finally, TAX is a compulsory financial charge or some other type of levy imposed upon a taxpayer by a governmental organization in order to fund various public expenditures.