No state income tax means the bill stops at federal.
Nevada has no state income tax, so a capital gain on an investment property faces only the federal side of the ledger: up to 23.8% (20% federal + 3.8% NIIT, 0% state). That's the full number; there's nothing else layered on top.
With no state income tax, Nevada sellers pay the same federal rate as anyone else, just without a state bill added on. The combined 23.8% is federal long-term capital gains plus NIIT and nothing more. Estimate a specific sale, depreciation recapture included, with the capital gains tax calculator.
Even without a state tax to worry about, the federal 23.8% still applies at closing unless the sale is structured as a 1031 exchange. Reinvest the proceeds into a replacement property and that bill waits. Run the numbers in the 1031 exchange calculator and confirm your deadlines with the timeline calculator.
The mechanics behind the Nevada figures above are covered in more depth in what is a 1031 exchange and how to defer capital gains with a 1031.