Higher taxes on the highest income bracket only applies to income above that level. The highest income bracket for individuals currently begins at well over $350,000.
If the tax rate on that bracket was raised, it would only increase taxes on income above that level. So, someone who makes just over the amount being discussed would only pay a tiny bit more.
Let's use the $200,000 mark as an example, if someone makes $220,000 they would only pay the increased tax rate on income above $200,000, or in this example, only $20,000. If the taxes were raised by 5%, that would only be an additional $4,000. That means someone making $220,000 would only pay $4,000 more in taxes than before.
The people who would see a real difference would be multi-millionaires, who generally speaking are not small business owners.
The image of the struggling mom-n-pop shop owners having to pay a lot more for outrageous tax increases is a myth.
As for health care, this would not be a problem if we had a single payer system. Businesses wouldn't have to provide health insurance for their employees.