Banking Abroad: The Complete Expat Guide to International Accounts

The Banking Nightmare Nobody Warns You About

By Alex W., fintech consultant who has opened bank accounts in the UK, Germany, Portugal, Thailand, UAE, and Singapore.

I'll never forget standing in a Banco de Portugal branch in Lisbon, trying to open an account with my NIF, passport, and proof of address — and being told I also needed a "declaração de início de atividade" (declaration of business activity start) from the tax office. A document nobody had mentioned. That was attempt number three. The first two branches had rejected me for different reasons.

Banking abroad is the single most underestimated challenge of international relocation. Here's everything I've learned from doing it wrong (repeatedly) and eventually getting it right.

The Multi-Account Strategy

After years of trial and error, here's the setup I recommend for any expat:

Tier 1: Digital-First International Account (Day 1)

Get this BEFORE you leave your home country:

Service	Pros	Cons	Best For
Wise	Real exchange rates, multi-currency, debit card, accepted globally	Not a "real" bank (IBAN is Belgian/Singaporean), some landlords reject it	Primary daily spending, receiving international payments
Revolut	Great app, crypto, trading, metal cards	Customer support is terrible, account freezes happen	Secondary card, travel spending
N26	German bank, real IBAN, insurance options	EU only, limited outside SEPA	EU-based expats

My recommendation: Open Wise AND keep your home country bank. Use Wise for daily spending abroad and your home bank for salary receipt and savings.

Tier 2: Local Bank Account (Month 1-2)

You'll eventually need a local account for:

Rent payments (many landlords require local transfers)

Utility direct debits

Social security and tax payments

Building local credit history

Tier 3: Investment Account (Month 6+)

Once settled, consider a tax-efficient investment platform:

Interactive Brokers — Available almost everywhere, low fees

DeGiro — EU-focused, very low fees

Local platforms — Sometimes required for tax-advantaged accounts

Country-Specific Banking Experiences

Portugal 🇵🇹

Difficulty: 7/10

Required documents: Passport, NIF, proof of address, proof of income

Best banks: ActivoBank (digital-friendly), Millennium BCP, Novobanco

Timeline: 1-3 visits, 2-4 weeks for full activation

Warning: Portuguese bank apps feel like they were designed in 2005. Embrace it.

Spain 🇪🇸

Difficulty: 5/10

Required: Passport, NIE, proof of address (empadronamiento)

Best banks: Sabadell, BBVA (decent app), Openbank (online-only by Santander)

Timeline: Often opened same-day

Tip: Openbank can be opened entirely online if you have an NIE

Thailand 🇹🇭

Difficulty: 8/10

Required: Passport, work permit OR long-term visa, Thai phone number, proof of address

Best banks: Bangkok Bank, Kasikorn (KBank), SCB

Timeline: 1 visit if you have all documents, but many branches refuse foreigners

Hack: Go to branches in tourist areas (Sukhumvit, Silom) — they're used to foreign customers

UAE 🇦🇪

Difficulty: 4/10

Required: Passport, Emirates ID, employment letter or freelance license

Best banks: Emirates NBD, ADCB, Mashreq Neo (digital)

Timeline: Often opened same-day

Perk: Zero-tax jurisdiction means no reporting requirements

Common Mistakes

Closing your home country account too early — Keep it for at least 12 months

Not checking international transfer fees — Some banks charge 3-5% for incoming USD/GBP

Ignoring currency exposure — If you earn in USD but spend in EUR, you have FX risk

Forgetting about tax reporting — FATCA (US) and CRS (global) mean your accounts are reported to tax authorities automatically

Using ATMs without checking fees — Some Thai ATMs charge €6+ per withdrawal

The Pro Setup (What I Actually Use)

After 6 countries, here's my current stack:

Wise — Main card, multi-currency holding, receiving USD/GBP client payments

Bangkok Bank — Thai rent and local expenses

Interactive Brokers — Investments

Home country bank (UK) — Legacy account, pension contributions

Revolut — Backup card, currency exchange when rates are favorable

Total cost: ~€15/month across all accounts. Worth every cent for the flexibility.

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