(CNN) — Just who qualifies as middle class has always been tough to pin down.
For Hillary Clinton and Bernie Sanders, the middle class extends to those earning up to $250,000 a year. Both have used that figure as the dividing line, raising taxes on those with higher incomes as part of their campaigns to ensure the wealthy pay their fair share.
But a deeper look into Americans’ income data shows that threshold would let many well-off Americans off the hook.
Those with incomes of $250,000 a year are in the top tier of the nation’s earners. A household income of $206,600 was enough to get into the Top 5% in 2014, according the latest U.S. Census Bureau statistics.
The typical middle class American family, meanwhile, made about $53,700 a year.
While there’s no set definition for middle class, the Pew Research Center says it encompasses those making two-thirds to two times median income for one’s household size. That means a middle class family of three would earn between $42,000 and $126,000 a year.
Not raising taxes on the middle class — which she is a centerpiece of Hillary Clinton’s campaign. She pledged at the Democratic debate in December not to hike taxes on the middle class, noting that she made the same guarantee when she ran in 2008.
To pay for her spending plans — including making college more affordable and guaranteeing paid family leave — she would target the wealthy. For instance, she’d institute the so-called Buffett Rule, which requires those making more than $1 million to pay an effective tax rate of at least 30%. She’d also hike the estate tax, raise taxes on investment managers and impose a 4% surcharge on income over $5 million. She has yet to unveil a complete tax plan.
She has also lashed out at her rival for the Democratic nomination, saying part of Sanders’ plan calls for hiking taxes on everyone.
“I am convinced that raising incomes for hardworking families is the number one job of our economy. That’s why I believe you deserve a raise increase, not a tax increase, and I am not going to stand for that,” she said on the campaign trail last fall.
Sanders, whose campaign revolves around reducing income inequality, would mainly boost taxes on the wealthy, but he would also raise levies more broadly to pay for his universal health care and family leave proposals.
But Sanders also draws the line at $250,000, limiting several of his tax increases to those making more than $250,000. The Vermont senator would slap higher income and investment tax rates on taxpayers earning more than $250,000, as well as impose an additional payroll tax on wages above that amount to shore up Social Security.