foreign tax credit

@Bink33gas  what is your  question about foreign tax credit ?  What category of foreign income that was taxed  and  by which country?  Is your tax home in USA? Are you a citizen/Resident ( GreenCard)/Resident for tax purposes ?.

Generally the foreign tax credit is used to reduce the effects of the  double taxation by both USA and the foreign Taxing authority on the same income.  This is because USA taxes its citizens/Resident/Residents for tax purposes  on worldwide income  while most countries  tax on the basis of residency / territory.  US recognizes the  full taxes paid to a foreign taxing authority on the income ( doubly taxed) , but the allowable credit per year is based on a ratio of the US person's foreign incomes to US sourced income.   The  foreign tax credit that is disallowed for the  year , can be carried backwards  or carried forward for 10 years.  Or  one can  use the foreign taxes paid as a deduction , if one itemizes ( but SALT limits may reduce the efficacy of this ).  Also tax credits  from income of different  categories of income can only be used to reduce taxes for identical categories.

If you are talking about  foreign tax credit  for  dividends etc and under a limit ( $300 for single filer, $600 for  joint filer ) then  the  whole amount is available as a credit without using the form 1666 and  its ratiometric limitation.

Please answer  my questions and perhaps I can help you more on the subject.  I am a retired  tax professional ( not associated with TurboTax )