Unlike most of her rivals, Ms. Warren has coupled her plans with ways to pay for them. The tax hikes for the ultra-rich and corporations that she has proposed would net an estimated $5.8 trillion over the next 10 years, according to her campaign.

The additional tax haul is more than enough to cover her spending spree so far.

Fact check groups determined that Ms. Warren inflated some of the tax revenue estimates. The Poynter Institute’s PolitiFact found that the amount gained from repealing some of the 2017 Republican tax cuts was closer to $1 trillion, not the $1.5 trillion stated by Ms. Warren.

Other critiques of her tax plans warned that the wealthy will maneuver to avoid the higher tax bills, thereby decreasing the windfall for the Treasury.