Why momo exists
Last checked 26 June 2026US persons in the UK get turned away by banks with no explanation, then spend evenings piecing together why from forum threads and half-right blog posts. momo exists to give that a single, honest answer.
The problem
An American living in the UK runs into the same wall again and again: an account that opens for everyone else is closed to them, and no one at the bank explains it. The reason is almost always a US rule, FATCA, PFIC, the reach of US tax on its citizens, and almost never something the applicant did wrong. The information exists, but it is scattered, dated, and often confidently wrong.
What momo does
momo maps which UK accounts open for US citizens, provider by provider, and explains the US tax rules behind each verdict in plain terms. It is built for people grafting to build a good life for their family in a new country, not for tax specialists, so it leads with the answer and defines the jargon as it goes.
The standard it holds itself to
Money advice that is wrong does real harm, so the bar is high. Every claim is sourced and dated, nothing unverified is published, and the data is kept in one place with its full edit history visible. When something is uncertain, momo says so and points to the date it was last checked rather than guessing.
What momo is not
momo is an information service. It is not a financial adviser, not a tax adviser, and not a regulated firm, and nothing here is personal advice. Cross-border tax is genuinely individual, and the right move is to confirm your own position with a specialist before you act. momo gets you to that conversation already knowing the lie of the land.