I sent in an estimated tax payment on the 16th, and unexpectedy it already arrived and was cashed (in 3 days!). Unfortunately the money I transferred from Fidelity to my credit union is set to be credited tomorrow.
Thus I just experienced the first bounced check of my life. It feels dreadful, due to the unnecessary work that I have now incurred. I need to write another check and print out another IRS form and address another envelope. It's just too much! This in addition to all the bounced-check fees. Blargh it!