Topic · US expats
US Exit Tax & Form 8854: Renouncing Citizenship or Giving Up a Green Card
How the covered-expatriate tests work, what the mark-to-market exit tax is, and why you must be tax-compliant first.
Renouncing U.S. citizenship — or giving up a long-held green card — can trigger the U.S. exit tax and a final information form, Form 8854. It's a significant, irreversible decision with real tax consequences, so it's worth understanding the mechanics before going near it.
Are you a 'covered expatriate'?
The exit tax generally applies only to covered expatriates — those who meet any one of these tests at expatriation:
| Test | Broad trigger | Notes |
|---|---|---|
| Net worth | Net worth at or above $2 million | Not inflation-indexed in the same way as the tax test; values most worldwide assets |
| Average tax liability | Average annual net U.S. income tax above an inflation-adjusted threshold for the prior 5 years | The threshold is indexed and rises most years — confirm the current-year figure |
| Certification | Failure to certify 5 years of U.S. tax compliance on Form 8854 | Applies even if you're below the net worth and tax thresholds |
Limited exceptions to covered-expatriate status
Some narrow exceptions exist — for example, certain dual citizens from birth who continue to meet specific conditions, and certain individuals who expatriate before a defined age — may avoid covered-expatriate status even if they cross the net worth or tax thresholds. Crucially, these exceptions generally still require meeting the five-year certification, and their conditions are precise, so they should be confirmed rather than assumed.
The mark-to-market exit tax
For covered expatriates, the exit tax generally works on a mark-to-market basis: most worldwide assets are treated as if sold at fair market value the day before expatriation, and the resulting net gain above an inflation-adjusted exclusion amount can be taxed. Certain items — like some deferred compensation, tax-deferred accounts, and interests in non-grantor trusts — follow special regimes (for example withholding or deferred taxation) rather than the mark-to-market computation.
Form 8854 and the compliance requirement
- Form 8854 is the official expatriation statement; without filing it, you can be treated as a covered expatriate.
- You generally must be able to certify five years of U.S. tax compliance.
- Renouncing does not erase prior obligations — back filings may still need to be addressed first.
A rough sequence to think about
- Get five prior years compliant (returns plus any FBAR/Form 8621/other forms you missed), since certification depends on it.
- Estimate covered-expatriate exposure — run the net worth and average-tax tests for your situation.
- Model the mark-to-market computation and the special regimes for pensions and deferred items.
- File Form 8854 for the expatriation year and complete the consular/USCIS expatriation step as applicable.
Thinking about renouncing or giving up a green card?
Getting your prior years in order is usually the first step. The free Tax Risk Check helps you see where you stand on compliance before any expatriation decision. Atamatax provides preparation support; this is not individualized tax or legal advice — expatriation in particular warrants professional guidance.
Atamatax provides tax preparation support and educational resources. This website does not constitute legal or tax advice.