The costofan intangileasset with a infitsuseful life is amortizaed intangibles typically have no residual values so the amortization has issimply cost the cost ofan intangible asset usually is amortized by the straingt line method the cost of an intangible asset with an in defrinits useful lifeisnotamortized good willis the most common intangible asset with an in definit use life explain.