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 Should I Pay Off Debt or Invest? This calculator will help determine whether you should invest funds or pay down debt. Can I Refinance My Mortgage? This calculator can help determine whether it makes sense to refinance your mortgage. How Income Taxes Work A quick look at how federal income taxes work.