What We Know About Kamala Harris’s $5 Trillion Tax Plan So Far

In a campaign otherwise light on policy specifics, Vice President Kamala Harris this week quietly rolled out her most detailed, far-ranging proposal yet: nearly $5 trillion in tax increases over a decade.

That’s how much more revenue the federal government will raise if it adopted a number of tax increases that President Biden proposed in the spring. Ms. Harris’s campaign said this week that she supported those tax hikes, which were thoroughly laid out in the most recent federal budget plan prepared by the Biden administration.

No one making less than $400,000 a year would see their taxes go up under the plan. Instead, Ms. Harris is seeking to significantly raise taxes on the wealthiest Americans and large corporations. Congress has previously rejected many of these tax ideas, even when Democrats controlled both chambers.

While tax policy is right now a subplot in a turbulent presidential campaign, it will be a primary policy issue in Washington next year. The next president will have to work with Congress to address the tax cuts Donald J. Trump signed into law in 2017. Many of those tax cuts expire after 2025, meaning millions of Americans will see their taxes go up if lawmakers don’t reach a deal next year.

Here’s an overview of what we now know — and still don’t know — about the Democratic nominee’s views on taxes.

The most recent White House budget includes several proposals that would raise taxes on large corporations. Chief among them is raising the corporate tax rate to 28 percent from 21 percent, a step that the Treasury Department estimated could bring in $1.3 trillion in revenue over the next 10 years.