Worldwide Disclosure Facility (WDF)
Worldwide Disclosure Facility: A Complete UK Guide
Guidance for individuals and businesses disclosing undeclared offshore income, gains or assets to HMRC through the Worldwide Disclosure Facility.
Typical deadline: Once you register to use the Worldwide Disclosure Facility, you have 90 days to submit your full disclosure.
Understanding this enquiry
At a glance
- The Common Reporting Standard means HMRC often already holds data on offshore income before you disclose
- A disclosure must cover every affected year and income source, not just the one first noticed
- Offshore penalties can be higher than equivalent onshore penalties, depending on the jurisdiction involved
- Registering an intention to disclose starts a 90-day window to submit the full disclosure
- A partial disclosure later found incomplete can be treated more harshly than no disclosure at all
- Instalment arrangements are often available where paying the full amount at once would cause hardship
The Worldwide Disclosure Facility (WDF) is HMRC's dedicated route for individuals and businesses to disclose previously undeclared income, gains or assets held outside the UK, ranging from rental income on an overseas property to interest on a foreign bank account or gains on offshore investments. HMRC's ability to identify offshore non-compliance has expanded significantly through the Common Reporting Standard, under which over 100 countries and territories automatically exchange financial account information, meaning HMRC often already holds data suggesting an omission before a disclosure is ever made. The facility itself doesn't reduce the tax or interest due, but making a complete and accurate voluntary disclosure through it is treated considerably more favourably than waiting for HMRC to raise the matter first.
Using the facility involves registering the intention to disclose, then submitting a disclosure within 90 days setting out the income or gains involved, the tax years affected, and a calculation of the tax, interest and any penalty due. The disclosure needs to cover every affected year and every relevant source, since a partial disclosure that HMRC later finds was incomplete can be treated far more harshly — sometimes as if no disclosure had been made at all — than a complete one submitted from the outset. Time limits for how far back a disclosure needs to go depend on the behaviour involved, with longer periods applying where the omission was careless or deliberate rather than an innocent oversight.
Penalties for offshore non-compliance can be higher than for equivalent onshore errors, reflecting an additional offshore penalty loading that applies under the relevant legislation, with the exact increase depending on the tax transparency of the territory where the income or asset is held. Countries and territories are categorised by how much information-sharing cooperation they offer, and disclosures relating to less transparent jurisdictions can attract a higher penalty loading than those involving jurisdictions with full automatic exchange arrangements already in place with the UK.
Once a disclosure is submitted, HMRC reviews the figures and reasoning provided and may ask follow-up questions, particularly around how the tax, interest and penalty have been calculated or how the source of funds has been evidenced. Where the disclosure is accepted, a formal settlement is agreed covering the total amount due, which can often be paid by instalment where the amount involved would otherwise cause genuine hardship. Given how unforgiving HMRC's treatment of an incomplete offshore disclosure can be, getting specialist input before submitting is generally worthwhile, particularly where multiple jurisdictions, several years, or complex ownership structures are involved.
How to prepare
Taking a structured, evidence-led approach from the outset — rather than reacting to each request as it arrives — tends to produce a faster and less stressful outcome.
- 1
Identify every offshore income source, gain or asset that hasn't been declared
- 2
Establish which tax years are affected and the behaviour involved for each
- 3
Gather bank statements, investment records and any documentation evidencing the source of funds
- 4
Calculate the tax and interest due for each year before registering to disclose
- 5
Check which jurisdiction category applies, since this affects the penalty loading
- 6
Get specialist input before registering, particularly for multiple jurisdictions or complex structures
What documentation to gather
- Bank statements and account records for every offshore account involved
- Investment or property records for any offshore gains
- A calculation of tax, interest and penalty for each affected year
- Evidence of the source of funds, where relevant
- A note of which jurisdiction each account or asset is held in
- A record of when the omission was identified and why
Common mistakes to avoid
These are the errors we see most often in practice — being aware of them in advance can help you avoid an entirely preventable setback.
Disclosing only the income source first noticed and missing other offshore accounts or assets
Underestimating how many years are affected before registering to disclose
Missing the 90-day deadline to submit the full disclosure after registering
Not accounting for the offshore penalty loading when estimating what's likely to be due
Assuming a disclosure is complete without checking every jurisdiction involved separately
Delaying disclosure once an omission is identified, rather than acting promptly
Not sure where you stand?
Get a confidential, no-obligation read on your situation from a specialist who deals with HMRC every day.
What happens after you respond
Knowing the typical sequence of events helps you feel more in control and know roughly what to expect at each stage.
You register your intention to disclose through the Worldwide Disclosure Facility
You have 90 days to submit a full disclosure covering all affected years and sources
HMRC reviews the disclosure and may ask questions about the calculation or source of funds
Any penalty loading is assessed based on the transparency of the jurisdictions involved
A settlement is agreed covering the tax, interest and penalty due
Payment can sometimes be arranged by instalment where paying in full would cause hardship
Frequently asked questions
The questions we're asked most often about this specific type of enquiry, answered in plain English.
What is the Worldwide Disclosure Facility?
It's HMRC's route for disclosing previously undeclared offshore income, gains or assets, allowing you to bring your tax affairs up to date on more favourable terms than waiting for HMRC to identify the issue independently.
How does HMRC find out about offshore income?
Primarily through the Common Reporting Standard, under which over 100 countries automatically exchange financial account information with HMRC, alongside other data sources like property records and international information requests.
How far back does a disclosure need to go?
This depends on the behaviour involved — a longer period applies where the omission was careless or deliberate rather than an innocent oversight, so it's worth reviewing your records as far back as reasonably possible.
Are offshore penalties higher than onshore penalties?
They can be, since an additional offshore penalty loading applies depending on how transparent the relevant jurisdiction is in sharing information with HMRC.
What happens if my disclosure turns out to be incomplete?
An incomplete disclosure that HMRC later discovers was missing information can be treated considerably more harshly than a complete one made from the outset, so thoroughness matters more here than almost anywhere else.
How should I prepare a Worldwide Disclosure Facility submission?
Preparation is largely about establishing the full picture before you register.
- Identify every offshore account, asset or income source involved
- Confirm which tax years and jurisdictions are affected
- Calculate the tax and interest due for each year
- Get specialist input before the 90-day submission window starts running
What records will I need to gather?
Most disclosures draw on a similar core set of records.
- Bank and investment statements for each offshore account
- Property or asset records for any offshore gains
- Evidence of the source of funds involved
- A calculation of tax, interest and penalty for each year
Can I pay the amount owed in instalments?
In many cases, yes, particularly where paying the full amount at once would cause genuine hardship, though this needs to be agreed with HMRC as part of the settlement.
Does the Worldwide Disclosure Facility cover cryptoassets held overseas?
It can, where the cryptoassets represent undeclared gains or income that would otherwise fall within scope, though the specific treatment should be checked against current guidance.
Will I be prosecuted for using the Worldwide Disclosure Facility?
Prosecution is generally reserved for cases involving suspected deliberate fraud, and a genuine, complete voluntary disclosure is treated very differently from that.
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