I have some money in an ISA and am wondering if it is possible to 'gift' around £20,000 to my non-US spouse. I've seen that the annual threshold for declaring a gift is $17000 and above that you have to file form 709. My two alternative thoughts are, I transfer half now and half in Jan so I don't have to declare anything, or is it possible to transfer half to another non-US friend/family member and have them transfer it to my spouse (I'm guessing this likely isn't allowed).
Also, are any of these rules different for a US expat gifting a non-US spouse?