I have a full-time job right now. To help me saving money to buy a house, I'm considering getting a second job, part-time job. I would add 16 hours a week to my 40 hours of my full-time job. All of my friends tell me it's a bad idea because I will pay such a big amount of tax. I'm thinking about buying a tax software to calculate, but it may not be necessary if you provide me with the answer. Thanks.