The three governments say they have taken this decision
after consulting with their own financial services industry.
The three have already held joint talks with the US.
"Entering into this type of arrangement highlights the
cooperative approach of the Crown Dependencies to international
tax matters," said Peter Harwood, Guernsey's Chief
Minister.
"Basing FATCA implementation on an intergovernmental agreement
is preferred by our industry and I am pleased to confirm our
intention to follow this approach with the US Government," said
Eddie Teare, the Isle of Man's Treasury Minister.
"Implementing FATCA is necessary for our finance industry to
remain competitive and doing so through an intergovernmental
agreement is considered to be the best course to adopt," said
Jersey's Chief Minister, Senator Ian Gorst.
The agreement each jurisdiction will sign will follow the
model intergovernmental agreement published by the US
government in July and will be similar to
the agreement the UK signed with the US in September.