"Flow-through accounting" means the practice of charging to the current period only those expenses incurred during the period. A common example is the lesser income tax expense in a given period, due to the use of accelerated depreciation methods or guideline lives in contrast to straight-line depreciation or normal service lives, which would benefit the consumer in the form of lower cost of service if prescribed by the regulatory agency. See NAC 361.342.
Nev. Admin. Code § 361.288
NRS 360.090, 361.320