I have a few oz investments, I never understood how a publicly traded one could really work, and I'd steer clear. And oz program just causes a deferral of a capital gain until tax year 2026, not a deduction thats good forever. So yes you could buy oz with say a dollar in capital gains and defer that dollar of cap gains tax until 2026, saving you 20 cents this year. But if you ever sold oz before 2026, that entire transaction should be reversed, and since you are the seller, i think the irs would take a dim view and might impose penalties and interest. Not sure on that last piece but I'd be careful.