Here's the thing about single payer.
Right now, it costs my employer nearly as much as my wages to provide me medical coverage, and I have to pay a premium on top of that anyway.
So even if my taxes go up ten or twenty percent (and they wouldn't go up that much), my employer could take what they had been spending on health insurance and give me nearly a 100% raise that would more than cover it. Or even a 50% raise, bank the rest, and then have the county cut the tax that pays for our agency due to lower operating costs going forward.
Single payer? Bring it.
I've thought about this too. When insurance began to go through the roof, my employer capped our insurance allowance at $400, and employees had to pay the difference. My long ago ex just retired, and she told me her monthly share was up to $800, and it was never great insurance to begin with. Imagine what employers could do with an extra $1200/month on each of their employees. Even if they kept it for themselves, and taxes went up, you would still have extra income, and you wouldn't be bothered by insurance hassles. I heard a figure a few years ago, put out by Republicans opposing healthcare, that taxes would go up $2000/yearly. I have no idea how they arrived at this, but it's still far below the benefits accrued. In truth, I don't know how much taxes would go up. We would need information from the government accounting office before we got out our paper and pencils.
People have strong visceral responses to taxes without thinking it through. Of course the government would have to raise taxes, but people need to do the math before they reject it over a visceral response. The downside is that's a lot of tax revenue sitting in government vaults as it's being dispersed on the country's health, and you know that the greedy would be eying it and scheming some way of getting their hands on it, and I'm certain many politicians would want to divert some of those revenues into the pockets of their biggest donors. Citizens will have to watch what is happening and vote accordingly.
People with insurance from their employers don't think about it much. They are happy to get a benefit and in some cases consider it a freebee, but it's not. When I retired and was allowed to stay in my employers insurance program (that is if I was willing to pay the total premium), it dawned on me pretty quickly that my insurance was going to be my single biggest monthly bill that dwarfed the others, and it hurt.