The Worldwide Disclosure Facility: Cleaning Up Offshore Affairs in 2026

The Worldwide Disclosure Facility (WDF) is HMRC's permanent voluntary disclosure route for under-declared offshore income, gains, or assets. It is not an "amnesty" — there is no reduction in tax — but it offers structured certainty, lower penalties than a prompted disclosure, and immunity from prosecution in most cases. With the Common Reporting Standard delivering ever more data to HMRC each year, the calculus for offshore holders has shifted decisively towards disclosure.

Why offshore disclosure matters now

The CRS is the international framework under which over 100 jurisdictions automatically exchange financial account information. UK residents holding bank accounts, brokerage accounts, life policies or other financial assets in CRS jurisdictions can no longer assume that HMRC is unaware. Each September, HMRC receives a tranche of CRS data covering the previous calendar year, and the agency's "Offshore, Corporate and Wealthy" team works through it methodically.

For 2026, several jurisdictions have come on stream that previously did not exchange — including some that historically attracted UK-resident savers due to perceived discretion. Reputational and regulatory pressure on banks in these jurisdictions has also led many to write to their UK clients asking them to confirm tax compliance.

What the WDF covers

The WDF is available for any tax that arises wholly or partly from an offshore matter — typically:

• Foreign bank interest not reported on UK returns.
• Investment income from offshore funds, OEICs, life policies (chargeable event gains).
• Capital gains on disposals of foreign securities or property.
• Rental income from overseas property.
• Employment income received offshore or through foreign payroll.
• Inheritance Tax on foreign-situs assets.
• Trust distributions from non-UK trusts received by UK beneficiaries.

The "Failure to Correct" (FTC) regime

The most painful feature of offshore disclosure in 2026 is the FTC regime introduced in the Finance (No. 2) Act 2017. For offshore tax non-compliance relating to years up to 5 April 2017 that was not corrected by 30 September 2018, the standard penalty is 200% of the tax due, reducible to a minimum of 100% based on cooperation. The FTC also extends the assessment window beyond the usual 4 / 6 / 20 years for offshore matters.

For years from 6 April 2017 onwards, the harshness eases somewhat but the offshore-specific penalty multipliers still apply — typically 1.5x or 2x the standard inaccuracy penalty depending on the jurisdiction "category" (HMRC categorises jurisdictions by perceived transparency, with the worst penalty multipliers applying to "Category 3" non-cooperative jurisdictions).

The disclosure process

1. Register with HMRC for the WDF via the Digital Disclosure Service. You will receive a Disclosure Reference Number (DRN).
2. You have 90 days from the date of registration to make the full disclosure and pay (or arrange to pay) the tax, interest and penalties.
3. The disclosure covers all relevant tax years, set out chronologically, with calculations of tax, interest, and a proposed penalty.
4. HMRC reviews the disclosure and either accepts or queries it. Acceptance usually takes 3 to 6 months for straightforward cases.
5. A formal contract settlement is signed by both parties, concluding the matter for the years and issues disclosed.

How far back must you go?

The number of years to disclose depends on the underlying behaviour:

• Reasonable care: 4 years (typically not relevant for offshore non-disclosure).
• Careless: 6 years.
• Deliberate: 20 years.
• Offshore matters with FTC application: potentially longer, with the FTC override extending periods that would otherwise be out of time.

Honesty about behaviour is critical. Trying to characterise plainly deliberate non-disclosure as "careless" to limit the lookback often unravels when HMRC requests supporting evidence, and can convert a manageable disclosure into a hostile enquiry.

The remittance basis interaction

UK residents who claimed (or could have claimed) the remittance basis under the pre-April 2025 rules face additional complexity. The Worldwide Disclosure must take into account whether the remittance basis applied for each relevant year, whether the Remittance Basis Charge was paid, and whether any amounts were remitted to the UK. The new four-year FIG (Foreign Income and Gains) regime that began in April 2025 changes the analysis for years from 2025/26 onwards. We routinely see clients who think they were on the remittance basis but had not formally claimed it — or vice versa.

Voluntary vs prompted: the penalty gap

Initiating the WDF voluntarily — before HMRC writes to you — qualifies as an unprompted disclosure. The penalty bands are materially lower than for prompted disclosures (where HMRC has already opened correspondence). For a deliberate non-disclosure on offshore income held in a Category 2 jurisdiction:

• Unprompted: minimum 25% of tax (after maximum mitigation).
• Prompted: minimum 50% of tax.

The difference on a £200,000 underpayment is £50,000 — typically much more than the cost of voluntary disclosure professional fees.

Other facilities to know about

• Let Property Campaign: specifically for UK residential landlords who have under-declared rental income.
• Card Transaction Programme: for taxpayers who accepted card payments and under-declared takings.
• Digital Disclosure Service: general route for non-specific under-declarations.

Action checklist if you have undeclared offshore matters

1. Inventory every offshore account, asset, or income source.
2. Gather statements going back at least 20 years if possible.
3. Identify any years where the remittance basis applied or could have applied.
4. Convert all foreign currency amounts to GBP at the relevant exchange rates.
5. Engage specialist representation before registering for the WDF.
6. Register only when you have a credible disclosure plan and the resources to complete within 90 days.

Offshore disclosure is one of the most technically demanding areas of UK tax practice. The 90-day clock starts when you register, so preparation matters enormously. Book a confidential call with PushDigits to discuss your situation; we will give you an initial view on penalty exposure and the right disclosure route within one hour. We work with clients across the UK, the UAE and other jurisdictions and integrate the disclosure with broader tax planning for the future. Reach our team via the contact page.