why: so the government won’t be able to use your money for whatever the fuck they’re planning for the next 4 years.
as a traveler, none of my money has been funding Israel, for example.
one-step method: you basically fill out one extra tax form called FEIE while you’re doing your taxes, write down the dates you were outside of the country, and then since you aren’t in the country and are not receiving any services from the US, you don’t have to pay income tax up to a certain amount (it’s a little over 125k this year).
Ok, but realistically, the people who would actually attempt tax evasion here wouldn’t be susceptible to any of the above.
Let’s assume a scenario where you have a dual citizen of the US and a South American country that has less than stellar relations with the US government.
Let’s say they obtained their US citizenship by being born in the country during a temporary period of time that the parents resided there. The family decided to move back after a year or two, another 40 years passed, and the kid has grown to be a successful plastic surgeon who runs a self owned clinic and earns $200k income annually. Being aware of their dual citizenship they keep their wealth invested in entities with no US presence and never self-report anything to the IRS.
This is where I am not seeing any way for the IRS to enforce or do anything about this type of tax evasion.