Freebase(0.00 / 0 votes)Rate this definition: Phenytoin sodium is a commonly used antiepileptic. Phenytoin acts to suppress the abnormal brain activity seen in seizure by reducing electrical conductance among brain cells by stabilizing the inactive state of voltage-gated sodium channels.
Indiana Tax Rates. The Indiana (IN) state sales tax rate is currently 7%. Because of its single state tax rate, Indiana is one of the few states that does not require extensive maintenance. But there are numerous local levels of tax rates which must be monitored. Amazon.com owns and operates several fulfillment centers in Indiana.
The Indiana Income Tax. Indiana collects a state income tax at a maximum marginal tax rate of %, spread across tax brackets. Unlike the Federal Income Tax, Indiana's state income tax does not provide couples filing jointly with expanded income tax brackets. Indiana's maximum marginal income tax rate is the 1st highest in the United States, ranking directly below Indiana's %.