No—not as a general promise. If a brokerage account is reportable under the Common Reporting Standard (CRS) and an applicable exchange relationship is in effect, information can reach the tax authority of your residence jurisdiction. Offshore does not mean invisible.
Checked on 18 October 2026. This is a high-level guide to ordinary investment accounts, not a country-by-country determination or personalised tax or legal advice. Local implementation, account classification and the reporting period matter; this is not an exhaustive list of fields under every updated regime.
What kind of privacy does CRS leave?
CRS is a system for annual exchange of financial account information between tax authorities, not a public portfolio register or a live trading feed. Reporting financial institutions collect information and report under domestic rules; authorities exchange it under the applicable legal arrangements. The OECD calls for confidentiality safeguards and limits on permitted use. Privacy from the public can coexist with lawful reporting to authorities. Diversifying investments internationally and concealing taxable assets are not the same objective. OECD · AEOI.
What can a brokerage report contain?
For a reportable custodial account, the baseline covers identifying details, tax residence, tax identification numbers (TINs), birth details where required, the account identifier and the reporting institution. It also covers year-end balance or value, or closure during the period; the currency; gross interest, dividends and other income; and gross sale or redemption proceeds where the institution acts as custodian, broker or agent. Field-specific exceptions exist, including for some TIN and birth information. Gross proceeds are not taxable profit: acquisition cost and local tax rules still matter. These aggregate fields are not a complete trade-by-trade tax calculation. EU · DAC2 · Annex I.
Does a passport or mailing address decide tax residence?
CRS identification centres on tax residence, not simply nationality, a visa or the address you prefer to use. New individual accounts generally require a self-certification, checked for reasonableness against account-opening information, including customer due diligence. Existing accounts have their own review procedures. A change in circumstances that makes a certification unreliable requires reassessment; a broker cannot simply rely on information it knows, or has reason to know, is wrong. Give accurate residence information and update changes. Multiple residences may need consideration under the applicable rules; see our tax residence and citizenship guide. EU · DAC2 · Annex I.
Does holding the account through a company change things?
An entity account is not automatically anonymous. The institution must classify the entity and determine whether it is itself reportable. For a passive non-financial entity (Passive NFE), it also examines controlling persons: reportable controlling persons can make the account reportable. Certain professionally managed investment entities outside participating jurisdictions are treated as Passive NFEs for this purpose. Active NFEs and financial institutions are treated differently; not every company has the same look-through result. Classification depends on the definitions and facts, not just a company name or incorporation certificate. EU · DAC2 · Annex I.
Does every jurisdiction exchange with every other one?
No. Domestic legislation, the reporting institution and account, the relevant reportable jurisdiction and an effective exchange arrangement all matter. A commitment to the standard is not proof that a particular bilateral flow is active for a given period. Excluded accounts and non-reporting institutions exist under defined conditions; an ordinary investment account should not be assumed to qualify. Check current local rules and the actual exchange relationship, including the implementation dates of amendments. Absence of a CRS exchange does not establish tax exemption or remove a filing duty imposed by local law. OECD · AEOI.
How does the EU’s DAC2 fit in?
DAC2 brings the CRS-based financial account exchange framework into EU administrative cooperation. The European Commission describes annual exchange with the taxpayer’s residence country, covering balances and relevant income and gross proceeds, including certain indirectly held accounts. That EU framework is useful evidence of how reporting works, but it is not a universal rule for every broker worldwide. Determine the legal institution maintaining your account and the applicable national implementation; the broker’s brand, app language or the market where you buy shares does not settle that question. EU · DAC2.
Is CRS the same as U.S. FATCA?
No. CRS and FATCA are distinct frameworks. The IRS describes FATCA reporting by foreign financial institutions and certain other foreign entities concerning U.S. account holders or foreign assets held by them, alongside separate reporting obligations for U.S. persons depending on value. Do not use a CRS residence analysis to conclude that U.S. obligations disappear. Nor does a FATCA form replace a CRS assessment. This article does not determine U.S. status, filing thresholds or which forms any particular investor must submit. IRS · FATCA.
What should an investor check now?
- Identify the legal institution, account type and reporting jurisdiction—not only the broker’s brand.
- Confirm all relevant tax residences and provide a truthful self-certification, including TIN information as required.
- For an entity, confirm its classification and any controlling-person requirements; do not assume incorporation creates secrecy.
- Update changes in circumstances and ask which reporting period and local rules apply.
- Keep balances, income, purchase costs, sales and tax records. Check your own filing duties independently of the institution’s report.
Our foreign-account records guide helps organise the paperwork. The practical distinction is lawful confidentiality versus concealment: keep your data secure, but do not mistake a foreign account or a reporting exception for permission to omit a required declaration.