I've been building out a financial newsletter for people living and earning across borders, and one thing keeps coming up: everyone researches visas and cost of living before a move, but almost nobody researches the financial system they're about to plug into. So I put together a step-by-step checklist covering the whole thing, start to finish — sharing the actual framework here since I think it's useful whether or not you ever touch my newsletter.
Before you even pick a country, run it through a financial filter, not just a vibe check. Does the place tax based on residency or citizenship (if you're American, this matters everywhere), how foreigner-friendly is local banking, what does the visa actually require financially, and is the currency stable against what you earn? Cost of living is a snapshot. These four questions are a forecast.
Before you leave, open a multi-currency "hub" account (Wise, Revolut, whatever) while you still have a home address on file — it's genuinely harder to open from abroad. Also, don't close your home bank account. Keep one card lightly active. Your credit history resets to zero the day you land somewhere new, and having a home fallback matters more than people think.
The visa money requirements are stricter than the marketing pages let on. Portugal's D7 wants ~€920/month in passive income right now. Mexico's temporary residency wants ~$4,300–$4,500/month or ~$73K in savings. These change almost every year, so always confirm the current number directly, not from a blog post from two years ago.
The biggest silent bleed is the FX spread. Banks don't advertise a transfer fee anymore because "zero fee" tests well in marketing. Instead, they give you an exchange rate 3–6% worse than mid-market and keep the difference. On a $3K/month transfer, that's $100+ gone every month, invisible.
Never use Dynamic Currency Conversion. When a foreign terminal asks if you want to be charged in your home currency, say no, every time. Let it charge you in local currency and let your card network handle the conversion.
If you're American, residency doesn't get you out of filing. The US taxes citizens on worldwide income regardless of where they live. FEIE covers up to $132,900 for 2026, but you still have to file even if that zeroes out what you owe.
I turned the whole thing into a free checklist (country selection all the way through year-one wealth protection) link's in my profile, didn't want to dump it in the post itself.
Curious what this sub would add, for those of you who've already made the move, what's the financial thing you wish someone had told you before you left?
TL;DR: Moving abroad comes with a financial system that most people don't plan for — banking setup, visa financial requirements, FX spread, tax residency. Built a free checklist covering the whole process, happy to share specifics in the comments.