Estimated quarterly payments
I have a couple of questions on this issue. I'm currently unemployed and not having withholding from unemployment insurance, plus some freelance income. So I thought I should be paying estimated taxes. I use Turbo Tax and ran through their Interview process to see how much they say I should pay. In doing this should I try to estimate my income going forward for the full year? If I do that, should I re run the numbers at the end of August to adjust the 3rd quarter payment?
Also the deadlines for the first two quarters have passed. Can I still send in money for the payment due 6/15? Would there be a penalty for doing so? Or should I wait for the 9/15 deadline and just send a larger amount?