The short answer: most Americans renouncing from Switzerland will not owe an exit tax
Renunciation is not a taxable event by itself. You only face the US exit tax if you are a covered expatriate under IRC section 877A. The same covered-expatriate tests apply if you are a long-term green-card holder ending that status. Most ordinary filers living in Switzerland do not cross those thresholds, so the practical outcome is a final partial-year US return and, for some, an annual Form 8854 informational filing—not a hidden expatriation bill. The Swiss side stays unchanged: renunciation does not alter your Swiss residence or Swiss tax status. The recent attention around the US citizenship renunciation surge and the new $450 fee is about the administrative process, not a hidden tax bill.
The three covered-expatriate tests
- Net worth test: your worldwide net worth is $2 million or more on the date of expatriation. This threshold is not inflation-indexed and has remained $2 million for years.
- Average income tax test: your average annual US net income tax liability over the five years before expatriation exceeds $211,000 for 2026. The prior-year figure was around $206,000.
- Compliance certification test: you cannot certify on Form 8854 that you met all US federal tax obligations for the five complete years before expatriation.
One test is enough
Meeting any one of the three tests makes you a covered expatriate. If you fail to file Form 8854, you become a covered expatriate automatically even if you would not have met the other tests.
What the mark-to-market deemed sale actually does
A covered expatriate is treated as selling every worldwide asset—including your Swiss home, investment accounts, and business interests—at fair market value on the day before expatriation. The resulting net gain is reduced by a single exclusion amount: $910,000 for 2026. This exclusion is aggregate across all assets, not per asset. Any remaining gain keeps its character: ordinary income is taxed at rates up to 37 percent, and long-term capital gains at a top 20 percent rate plus the 3.8 percent net investment income tax, for a combined 23.8 percent.
- 2024 exclusion
- $866,000
- 2025 exclusion
- $890,000
- 2026 exclusion
- $910,000
Because the exclusion applies only against net gain, a covered expatriate with built-in gains below the threshold may still owe no exit tax. Losses, asset character, and the order in which gains are recognized can change the result, which is why this is usually a document and spreadsheet exercise before it is a tax bill.
Form 8854 is the initial and annual expatriation statement
Form 8854 does two jobs: it is your initial expatriation statement in the year you renounce, and it is an annual filing obligation for covered expatriates. If you do not file it when required, you become a covered expatriate automatically, regardless of your net worth or income. The $450 State Department fee is a processing charge for the renunciation itself; it is separate from anything the IRS may assess under the exit tax rules.
Special rules for retirement accounts, deferred pay, and trusts
IRC section 877A has separate mechanics for deferred compensation, tax-deferred accounts such as 401(k)s and IRAs, and nongrantor trusts. Those assets generally do not follow the simple mark-to-market sale and may require withholding, acceleration, or ongoing reporting. In addition, section 2801 imposes a transfer tax on US persons who receive gifts or bequests from a covered expatriate. If your structure includes these pieces, the correct treatment depends on your exact account types and beneficiary arrangements.
Your next step: run the three tests before you decide
Before spending energy on the exit tax, check the three tests as they apply to your 2026 facts: your worldwide net worth, your average US income tax liability over the last five years, and your five-year compliance history. Most working Americans in Switzerland will fall below the net worth and income thresholds and will have filed regularly. For them, renunciation means a final partial-year US return, Form 8854, and after that a Swiss-only tax life. If a return to the US is still a possibility, the cross-border timing matters; the moving back to the US from Switzerland timeline walks through the other side.