Cross-Border Collaborations
Tools, platforms, and people I’ve worked with or actively recommend for cross-border financial situations.
Important: Nothing on this page is financial, tax, legal, or investment advice. I disclose every advisory or commercial relationship below. You are responsible for your own decisions and for verifying anything that affects your taxes, your money, or your residency. When stakes are high, talk to a licensed professional in your country.
How this page is built
Cross-border financial work isn’t a one-tool category. The platforms I find myself recommending most often each solve a specific piece of the puzzle. This page is the curated short list — not an exhaustive directory and not a “best of” listicle. If something is here, it’s because I’ve either used it directly, advised on it, or seen people I trust get good outcomes with it.
For a topical reading list of long-form posts on cross-border tax decisions, see The Cross-Border Tax Insider.
Cross-border tax planning
Taixable — cross-border tax planning platform. Built around a Validated Rules Model: every rule is sourced and reviewed before it’s used in a calculation, with disclosure of where the underlying data came from. The two products that matter for most readers of this blog are the Pro subscription (ongoing access to country guides, planning tools, rule updates) and the one-off Decision Report (structured analysis for a specific decision — a job offer, a relocation, an asset sale, a stock-option exercise).
Disclosure: I’m a business advisor for the company. I don’t receive per-click or per-signup payments from any of my links. If you want the deep dive on why pre-decision modeling is the highest-leverage cross-border tax exercise most people will ever do, the framework is in this post.
Multi-currency banking and FX
Wise — multi-currency accounts and FX transfers. The default starting point for anyone who needs to hold or move money across more than one currency. Real exchange rates, transparent fees, account details in major currencies. Not a substitute for a real local bank account in your country of residence, but the most useful single tool I’ve found for the operational side of cross-border life.
The first international bank account piece on this blog walks through where Wise fits and where it doesn’t.
Country and lifestyle research
Two resources I find myself linking to in posts, with caveats:
- Nomad List — for cost-of-living and lifestyle data. Useful as a starting point for narrowing destinations. The tax data on most aggregator sites (including this one) is unreliable — verify against official sources before you make decisions.
- Official tax authority publications — IRS International Taxpayers, HMRC, and the equivalent revenue agency in any country you’re researching. The boring source is the right source.
Curated reading on this blog
The posts on this site that mention Taixable in context, in case you want to see how the platform fits specific scenarios:
- The cross-border tax decision report: when modeling pays for itself
- Why most US expat tax software gets cross-border situations wrong
- Model your cross-border tax outcomes before you relocate, not after
- Validated tax content versus AI answers
- Equity compensation across three countries: a worked example
Other landing pages on this blog
- The Cross-Border Tax Insider — curated reading on tax decision modeling
- Free resources and offers — free tools and limited promotions
- Wider community collaborations — extended network
Want to suggest a tool?
If you’ve used something cross-border-aware that you think belongs here, see the contact page. I read everything but only add tools I’ve personally vetted or that I’m confident enough in to put my name behind.