The three -- 29-year-old Soumaya Boufassil Mohammed Ali Ahmed and Zakaria Boufassil, both aged 26 -- were all from the central English city of Birmingham, police said.
Ahmed and Zakaria Boufassil were charged with "an arrangement as a result of which.... A quantity of sterling currency was made available to another and they knew or had reasonable cause to suspect that it would or may be used for the purposes of terrorism," police said in a statement.
The three were among five people arrested earlier this month as part of what police said was an "extensive investigation" that involved French and Belgian authorities.
Another man arrested at the same time, 40-year-old Fazal Sajjad Younis Khan, was charged with possessing a tear gas spray. He has been released on bail and is due to appear in court next month.
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The fifth man, aged 59, was released on bail without charge.
The Wall Street Journal newspaper cited unnamed Western officials last year saying several people with connections to slain Paris attacks ringleader Abdelhamid Abaaoud lived in the Birmingham area.
Both attacks were claimed by the Islamic State group.
Abaaoud was killed in a French police raid just days after the November 13 Paris attacks.