1) Eliminate capital gains tax.
2) Raise taxes on the rich
1) Treat capital gains as ordinary income
2) Add another bracket or two on the top, raise taxes on the rich, but also taxes upper middle class should also probably go up (maybe just roll back Bush and Trump tax cuts)
3) Estate tax - stop raising the cap; eliminate stepped up basis; limit the ability to shield estates from taxes. Plus, the estate tax is great: you can pass on a little tax-free, and then a dead person is paying the rate (whereas an inheritance tax is one that the person inheriting pays). No need to foster such obscene generational wealth
That and equipping the IRS adequately and allowing them to do their JOB wouldn't hurt either.
Yes, and 4) Let the IRS write regulations that close some of the bs loopholes that exist and are exploited by multimillionaires and whatnot, like the "limited partnership" one or "carried interest".
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The US is a very wealthy country with relatively low taxes across the board compared to comparatively developed countries. We can overall afford to tick rates up a little bit, especially if we want to expand social safety nets and government services.