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US citizens in the UK · Institutions

Which Tandem Bank accounts accept US citizens

Last checked

Tandem Bank has been checked for US citizens across 3 account types. 2 are open to a US person and 1 is not on offer, whatever your nationality.

If you already have an account with Tandem Bank, a second one there is usually the easier application, because Tandem Bank has already checked who you are. Each account below carries its verdict, the evidence behind it and the date it was checked.

At a glance

Account Verdict Last checked
Savings accounts Opens
Cash ISAs Opens
Mortgages Not offered

Savings accounts

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Opens

Tandem opens its savers to UK residents aged 18 or over who also hold a UK current account in their own name, with no US-person exclusion. The US taxes the interest as ordinary income.

FSCS £120,000 · app-only

Account Terms The catch
Instant Access Saver
Access
Easy access
Rate
3.40% AER, variable
Then
3.15%
Max
£250,000
Rate as of
 Includes a 0.25% bonus for the first 12 months; unlimited access.
5 Year Fixed Term Saver
Access
Fixed term
Rate
4.75% AER, fixed
Term
5 years
Max
£2,500,000
Rate as of
 No withdrawals or top-ups once the 14-day funding window closes. Interest is paid annually to your connected bank account.
1 Year Fixed Term Saver
Access
Fixed term
Rate
4.60% AER, fixed
Term
1 year
Max
£2,500,000
Rate as of
 No withdrawals or top-ups once the 14-day funding window closes. Interest is paid annually to your connected bank account.
18 Month Fixed Term Saver
Access
Fixed term
Rate
4.60% AER, fixed
Term
18 months
Max
£2,500,000
Rate as of
 No withdrawals or top-ups once the 14-day funding window closes. Interest is paid annually and at the end of the term to your connected bank account.
2 Year Fixed Term Saver
Access
Fixed term
Rate
4.70% AER, fixed
Term
2 years
Max
£2,500,000
Rate as of
 No withdrawals or top-ups once the 14-day funding window closes. Interest is paid annually to your connected bank account.
3 Year Fixed Term Saver
Access
Fixed term
Rate
4.70% AER, fixed
Term
3 years
Max
£2,500,000
Rate as of
 No withdrawals or top-ups once the 14-day funding window closes. Interest is paid annually to your connected bank account.

Source: Tandem Bank savings FAQ, 2026-08-09 Last checked Tandem Bank's own page

Cash ISAs

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Opens

Tandem's cash ISA terms require you to be 18 or over, a UK resident including for tax purposes, with a National Insurance number and a UK current account. Nothing bars US persons. The IRS still taxes the interest as US income, as the wrapper gives no US relief.

FSCS £120,000 · app-only

Account Terms The catch
2 Year Fixed Rate Cash ISA
Access
Fixed term
Rate
4.83% AER, fixed
Term
2 years
Max
£250,000
Rate as of
 Closing early after the cooling-off period costs 180 days of interest.
1 Year Fixed Rate Cash ISA
Access
Fixed term
Rate
4.73% AER, fixed
Term
1 year
Max
£250,000
Rate as of
 Closing early after the cooling-off period costs 90 days of interest.
Instant Access Cash ISA
Access
Easy access
Rate
4.00% AER, variable
Then
3.75%
Max
£250,000
Rate as of
 Includes a 0.25% bonus for the first 12 months, then it reverts to 3.75%.
3 Year Fixed Rate Cash ISA
Access
Fixed term
Rate
4.82% AER, fixed
Term
3 years
Max
£250,000
Rate as of
 Fund it within 14 days; closing early after the cooling-off period costs 270 days of interest.
5 Year Fixed Rate Cash ISA
Access
Fixed term
Rate
4.93% AER, fixed
Term
5 years
Max
£250,000
Rate as of
 Fund it within 14 days; closing early after the cooling-off period costs 365 days of interest.

Source: Tandem cash ISA terms, 2026-08-17 Last checked Tandem Bank's own page

Mortgages

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Not offered

Nothing to apply for, whatever your nationality. Tandem is no longer accepting new applications for first charge mortgages and says so on its own page. Existing borrowers are still serviced.

Closed to new business · first charge mortgages withdrawn

Source: Tandem Bank mortgages page, 2026-08-17 Last checked Tandem Bank's own page

Account names link to the provider's own site. momo has no active affiliate partnerships; if that changes it will be disclosed and will never change a verdict. Every institution, A to Z.

Confirm your own position with a cross-border specialist. Acceptance policies and tax rules change, and your facts may differ from the general case. Rates and terms here are the provider's published figures rather than an offer, and the provider decides each application on its own criteria. Use this as a map, not a ruling. Last checked .
Tax

FATCA

FATCA makes UK banks report accounts held by US persons to the IRS. It is not a tax; it is a reporting trail. Where it bites is access.

 Tax

FBAR

If your foreign accounts top $10,000 combined at any point in the year, you file an FBAR. What counts, when it is due, and what happens if you miss it.

 Tax

ISA US tax

The IRS does not recognise the ISA wrapper. Cash ISA interest and stocks ISA gains are taxable on your US return, and fund holdings drag in PFIC rules.