The increase in taxes is also about $20T short of what is needed to actually pay for his plans, even assuming M4A only costs $17T as stated in his plan even though only a few weeks ago he was saying it would cost $30T.
Every single analysis of his proposed tax policy is that it's grossly unrealistic.
And as for savings, currently companies cover on average 80% of the cost of healthcare plans as part of subsidized employee healthcare. When that entire tax burden shifts to individuals, they're going to go from covering 20% to 100% of the cost through taxes, so unless those healthcare costs drop by 80% (which is hilarious if anyone thinks that), the increase won't in fact be offset by savings.