Hello. I'm about in the same boat. I'm living in MS but doing work in Texas and New Mexico. My employer doesn't pull out my local state "Mississippi" taxes, so I have to file estimated taxes. I had to go to my state's website, which searching in google or bing should lead you to the right direction. I had to make an account. To make sure I was doing the right thing, I actually called and spoke to someone in the tax department in my state, and they gave me instructions on how to make an account, when to file, and how much. My state is 5%. So I take any income made, and I calculate that on a calculator multiplied by 5%. So if just to say, I make $80,000 this year, I'll take 80,000 x 5% which is $4,000.00 state taxes. (I'm just using this number as an example.) So I'll take that $4,000.00 and pay it in estimated taxes. For Mississippi, our estimated tax payment days are: April 15, June 15, Sept 15 and Jan 15 for that prospective year in taxes. Though you'll be paying on Jan 15, you won't be paying for any income past the Dec 31, or year date on taxes. Anything you make payments on, I'd make a documented folder b/c in MS, we are required to have our own proof come tax time of what we paid. So save those receipts/print outs of when you make payments. I've also made an excel spreadsheet for myself that puts all my mileage income and paycheck income in the spreadsheet. I've instructed it to multiply that amount at that time by the required 5% for my state. It's basically a check for myself to make sure I don't get slammed with a huge tax bill at the end of the year. This is my first year doing it, so I'm really nervous about it. Good luck.
