Kuwait
Kuwait imposes no personal income tax, so an individual's prop-firm profit-share, including crypto payouts, is not subject to any individual income tax and needs no personal filing. Crypto faces regulatory restrictions but no income tax.
No personal income tax on individuals - a resident's profit-share is outside the scope of any Kuwaiti personal income tax.
0% personal income tax. (Corporate income tax applies only to certain foreign/corporate entities.)
Social security applies to Kuwaiti national employees; there is no personal income tax and no self-employment income-tax charge on an individual contractor.
No personal income-tax registration or return for individuals on trading profit-share.
With no personal income tax, USDC/crypto payouts are not taxed at the individual level; the regulator restricts crypto activity (a regulatory, not income-tax, issue).