READ: Elizabeth Warren's Plan To Pay For 'Medicare For All'

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Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., has released her plan to fund single-payer health care, keeping with a pledge not to raise taxes on the middle class. Zach Gibson/Getty Images hide caption

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Zach Gibson/Getty Images

Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., has released her plan to fund single-payer health care, keeping with a pledge not to raise taxes on the middle class.

Zach Gibson/Getty Images

Updated at 11:10 a.m. ET

Sen. Elizabeth Warren says she can fund "Medicare for All" without raising taxes on the middle class. Instead, among other things, she would boost the wealth tax on the ultra-rich that she has promoted on the campaign trail.

Warren had promised at a recent debate that she would not sign a bill that raises health care costs for the middle class. Under a plan released Friday morning, the Massachusetts senator and 2020 Democratic presidential candidate goes further: Middle class Americans would no longer pay health premiums or copays and would also not pay any new taxes to replace those costs. However, they would pay taxes on whatever extra take-home pay they would receive in this new system.

However, she will boost what had been a 3% wealth tax on people with more than a billion dollars to 6%. Her plan would also have employers pay higher taxes to the government, which she says would replace what they currently pay toward private health insurance.

Warren is proposing $20.5 trillion in new federal spending under the proposal.

Altogether, Warren's plan says that total national health costs would not go up under the single-payer health proposal. Rather, all of the estimated $52 trillion in health spending over a decade would be paid via the federal government.