Who gets thumped by higher taxes in President Barack Obama’s health care law? The wealthiest 2 percent of Americans will take the biggest hit, starting next year. And the pain will be shared by some who aren’t so well off — people swept up in a hodgepodge of smaller tax changes that will help finance health coverage for millions in need.

For the vast majority of people, however, the health care law won’t mean sending more money to the IRS.

And roughly 20 million people eventually will benefit from tax credits that start in 2014 to help them pay insurance premiums.

The tax increases — plus a mandate that nearly everyone have health coverage — are helping make the law an election-year scorcher. Obama is campaigning on the benefits for the uninsured, women and young adults. His rival, Mitt Romney, and Republican lawmakers are vowing to repeal “Obamacare,” saying some health care reforms are needed but not at this cost.