Bursting the Bubble Tulips were the first, but they won’t be the last. What forms a “bubble” and what causes them to burst? Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content What's My Potential Estate Tax? This calculator helps estimate your federal estate tax liability. Bi-Weekly Payments This calculator estimates the savings from paying a mortgage bi-weekly instead of monthly. An Overview of Renter’s Insurance Don’t overlook the need for renter’s insurance if you rent your home.