Choosing a bank for the task: settlement, custody or investment

People look for a good bank and end up with a poor fit, because banking is three different jobs and most institutions do one of them well.

The three jobs

Settlement. Salary in, rent and cards out, local transfers, direct debits. What matters is that the app works, the branch exists, and the local systems are supported. A large domestic retail bank in the country you live in does this best, and its investment products are irrelevant to you.

Custody. Holding wealth safely across currencies, with a relationship manager who answers, and the ability to move money internationally without a compliance incident every time. Private banking arms and established international institutions do this, at a cost, and with minimum balances.

Investment. Securities, funds, execution. A brokerage does this far better and far cheaper than a bank's wealth arm, and the difference in fees over a decade is substantial.

Why one institution rarely serves all three

• A domestic retail bank has poor international transfers and expensive, limited investment products.
• A private bank's settlement experience is frequently worse than a retail bank's, and its investment fees are high.
• A brokerage does not do settlement at all and its cash handling is basic.

What to weigh when choosing each

• Compliance appetite for your profile — nationality, source of wealth, sector. This is the binding constraint and it is worth establishing before you apply rather than after a refusal.
• Whether they will keep you as a non-resident if you move again. Many will not, and closure notices arrive with little warning.
• Currency capability, and the actual spread rather than the advertised one.
• Reporting. Every account is reported to your country of tax residence, so there is nothing to optimise here — only accuracy to maintain.
• Deposit protection, its limit and whether it covers you as a non-resident.

The arrangement that works

A local retail account for daily life, an international institution for holding and moving, a brokerage for investing, and — the item people skip — an account in your country of citizenship kept open and active, because closing it is easy and reopening it as a non-resident is not.