After a long holiday weekend, here's some scary tax news to strike and shatter your fresh back-to-work attitude like a sledgehammer.
Sorry, but you're Estimated tax payments are due today. You can pay electronically if you have an account or you can pay with your credit/debit card.
If you still use the old snail mail method, send in your 1040-ES voucher and postmark your check for today. Use whatever means you want to pay, but make sure you pay on time!