1. A tax return preparation kit, comprising: a disposable tax return preparation device for receiving taxpayer input of tax related data for use in preparing an electronic tax return, the disposable tax return preparation device adapted to determine tax return data, including at least one of a tax refund due to the taxpayer or a tax payment due by the taxpayer; and a communications cable for communicatively coupling the disposable tax return preparation device to a telecommunications system, the tax return preparation device adapted to transmit via the communications cable the tax return data to a remote tax return preparation system also coupled to the telecommunications system, the remote tax return preparation system adapted to receive the tax return data determined by the disposable tax return preparation device, prepare an electronic tax return based on the tax return data, and electronically file the electronic tax return with a tax authority.