You have the certificate. Your old tax authority has a different opinion.
Registering abroad doesn't end your tax obligations at home. Spain, France, Germany: they investigate departures. And the burden of proving you actually left falls entirely on you.
The problem
Registered is not the same as gone.
- 183 days
Days define your tax home
Spend 183 or more days in any country during a calendar year and you become a tax resident there. Your old country uses the same threshold to argue you never truly left.
- Two claims
Two countries claiming you
Your new country wants certified proof you actually live there for renewals. Your old country wants certified proof you no longer live there for taxes. A residency certificate satisfies neither.
- No proof
No standard document proves you were there
A residency certificate proves you registered. A utility bill proves your address. A passport stamp proves you crossed a border. None of them prove you were physically present on a specific day. That's the question they're actually asking.
What they check
Your old country doesn't believe you left
You packed boxes, cancelled the lease, filed the deregistration. It looked like a clean break. Then, two years later, a letter arrives. "I moved in March" is a statement of intent, not evidence. They look at where you actually were, day by day, and evidence has to answer four things at once.
- Where
Physical presence
Did you really leave? Most countries use 183 days as the threshold. Spend too many days back home and you are still a tax resident regardless of where you registered. The GPS-sealed country you spent each day in is what counts.
- When
Center of vital interests
Is your business, main income source, or primary bank account still in your old country? Tax authorities will argue your economic ties never moved. An external timestamp that can't be backdated fixes each day in time.
- Who
Family ties
If your spouse or children remain in the origin country, many jurisdictions (Spain, France, Germany) presume you are still a tax resident there until you prove otherwise. Your biometric identity, not a registration form, ties the record to you.
- Proof
A report they can verify
An eIDAS 2 report your old tax authority can verify on its own, without taking your word for anything. Present it to your advisor or directly to the auditing authority.
How it works
Three steps, thirty seconds a day. Full protection.
What you get is a certified record linking your verified identity to a GPS coordinate and an external NTP timestamp, sealed on blockchain before you put the phone down.
- 01
One selfie identifies you, not just the phone
Biometric liveness detection confirms your verified legal identity in real time. GPS captured simultaneously. Under 30 seconds.

- 02
Every day, one sealed record
Your check-in is sealed with your biometric, GPS coordinates, and an external NTP timestamp no device can spoof. Immutable from the moment it's created.

- 03
Export when they ask
eIDAS 2-compliant PDF and CSV reports in 32 languages. The blockchain signature is independently verifiable by any auditor.

The family presumption rule is a trap most expats don't see coming.
In Spain, France, Germany, and other jurisdictions, if your spouse or minor children remain in the origin country, the law presumes you are still a tax resident there. You have to actively disprove it.
Each family member needs their own record. Not a shared account. Individual biometric verification, individual GPS records, individual blockchain-sealed reports — one for each person who needs to prove they made the move.
One account each. One proof each.
FAQ
Common questions from expats
I already have a residency certificate. Why do I need ResidenceSafe?
A residency certificate proves you registered in a country. It does not prove you actually live there. Tax authorities, especially Spain's Hacienda, routinely challenge departures by looking at physical presence. ResidenceSafe creates daily, certified, geolocated records that prove where you were on each specific day. The certificate shows intent; ResidenceSafe shows reality.
Can my spouse and children each have their own account?
Yes. Each family member gets their own ResidenceSafe account with independent biometric verification and separate certified records. This is especially important if your old country applies a family presumption rule (like Spain's Art. 9.1.b LIRPF), which presumes you are resident where your spouse or minor children live. Individual accounts let you prove the entire household relocated.
How do I use ResidenceSafe records in a tax audit?
Generate an annual presence report directly from the app. Each report includes certified dates, geolocations, and blockchain verification hashes. Reports are available in 32 languages and comply with eIDAS 2 electronic signature standards. Present the report to your tax advisor or directly to the auditing authority as supporting evidence of your physical presence.
What if I travel frequently but my main home is abroad?
ResidenceSafe records every check-in with its exact geolocation. If you travel for business or holidays but return to your primary residence, your records will reflect that pattern clearly. The annual report shows day-by-day presence across all locations, making it easy to demonstrate where your center of life is, even if you are frequently on the move.
Does ResidenceSafe work if I split time between two countries?
Absolutely. ResidenceSafe records your location wherever you check in. If you split time between two countries, your annual report will show exactly how many days you spent in each jurisdiction. This is critical for meeting 183-day thresholds and for resolving dual-residency disputes under double taxation agreements.
How far back can I generate reports?
You can generate reports covering any period since you started using ResidenceSafe. Records are blockchain-sealed at the moment of creation and cannot be altered or backdated. The sooner you start, the more certified days you accumulate for future audits or renewals.
Your certificate says you live there. ResidenceSafe proves it.
Start building your record now. You can't go back and fill in the days you've already missed.
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