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Routing number, sort code, IBAN: which details to give to whom

Three countries, three ways to identify an account. A short guide to US, UK and European bank details, so you always give the right ones and get paid without delays.

Updated 27 September 2026 | 2 min read

A client in Texas asks for your routing number. One in London wants a sort code. One in Milan needs an IBAN. They are all asking for the same thing, the coordinates of an account, in the format their own bank understands. Give the wrong one and the payment bounces or waits in a queue. Here is the map.

United States: routing number and account number

The routing number, nine digits, identifies where the account is held. The account number identifies you. Together they are used for ACH payments and Fedwire wires within the United States. There is no IBAN in the US system.

United Kingdom: sort code and account number

The sort code, six digits, identifies the institution and branch. The account number has eight digits. They are used for Faster Payments, CHAPS and BACS within the United Kingdom.

Euro area: IBAN

The IBAN is a single string that starts with a two-letter country code, for example FI, followed by check digits and the account number. It is used for SEPA transfers in euro throughout the SEPA area. An IBAN from any member country is accepted in every other member country.

International: SWIFT or BIC

For transfers from outside these systems, banks use the SWIFT network and identify the receiving bank with a BIC, also called a SWIFT code. With iSwiss Pay, SWIFT is available on the US dollar account.

Which one to give

  • Payer in the United States: routing number and account number.
  • Payer in the United Kingdom: sort code and account number.
  • Payer in the euro area: IBAN.
  • Payer anywhere else: the SWIFT details of your US dollar account.

With iSwiss Pay you find each set of details in the app, on the corresponding account. Copy them exactly, including the name on the account.

Questions

Is the routing number the same as a SWIFT code?

No. The routing number is for US domestic payments. The SWIFT or BIC code is for international transfers.

Can I give my IBAN to a US client?

A US client paying in dollars should use your routing and account number. The IBAN is for euro payments within SEPA.

Where do I find my details?

In the iSwiss Pay app, on each account.

Ready to start?

US dollar account

Routing and account number, ACH, Fedwire and SWIFT.

Accounts are opened after identity verification and are subject to our compliance policy.