TL;DR — Key Takeaways
- →Group files by tax year and by country, not by whichever inbox they landed in.
- →Typical items: leases, boarding passes, entry evidence, employer letters, bank statements, prior returns.
- →FEIE questions often ask where you were, not only what you earned.
- →Private encrypted storage is the point. These files should not be on a public URL.
Short answer
Store the documents that show where you were and where you kept ties, labeled by tax year and country. The day-count PDF and the underlying papers answer different questions.
Worth keeping when a residency or foreign-earned-income position might be questioned:
- Lease or ownership records
- Boarding passes or other travel proofs
- Employer or client letters that state where you worked
- Bank or utility evidence you actually use
- Prior-year returns you may need to point at
Domicyle Audit Vault keeps those files encrypted, behind login, by category, year, and country. They are not on the public site. Pair the folder with Proof of Presence if you also want the trip log to say which days a second source confirmed.
Educational planning only — not tax advice.