Mercury air’s debt consists of $50,000 in accounts payable, mercury air’s debt consists of $50,000 in accounts payable, $100,000 in 10 percent notes payable and $240,000 in 8 percent bonds. mercury has no preferred stock. if its marginal tax rate is 35 percent, what is mercury’s financial breakeven point? $100,000 in 10 percent notes payable and $240,000 in 8 percent bonds. mercury has no preferred stock. if its marginal tax rate is 35 percent, what is mercury’s financial breakeven point?