Or your customers make more than 450KUSD/year. I've shut down the business as of today.
/johnny
I am sure you are aware that the 39.6% rate applies only to income above $450,000. The first $450,000 income stays at Bush tax rates. So if you earn $550,000, the higher tax rate applies only to the last $100,000. Which means $4600 more in tax. That is a lot but not enough to kill your business. I hope you do not shut down your business.