{{{msbelle}}} Could you go get a money order or a counter check at your bank so you can pay your taxes and worry about your keys later?
Whether that is possible or not, you will be okay. You will get the taxes paid eventually, you will find the keys or apply some leverage to the safe or something. It's not the best this could go but it's truly not a disaster.
Also, I don't know where the keys to my fire-proof safe are either. So there's some important stuff in there like my passport that I can't really get to.