<prompt> Human: I recently started a job as an intern where Im classified as a contract worker, meaning I dont get taxes taken out. What percentage of my check should I set aside for when tax time comes? I make 15hr and live in Oklahoma if that helps or not?.  <response>: If this is full-time 40 hours50 weeks, your income would be 30,000 in 2017. If this is entirely profit, your federal self employment tax would be 4,239.00.If you are filing status single and claim your personal exemption, your federal income tax would be 2,158, for a total federal tax of 6,397. This means about 1,600 per quarter for federal tax. 