Dormant accounts are more common than you might think. Many individuals and businesses open bank accounts or companies that later remain unused — sometimes for years.
However, “dormant” does not always mean “no responsibilities”. From a UK tax and compliance perspective, dormant accounts and dormant companies still carry specific HMRC and Companies House obligations.
This guide explains what dormant accounts are, how they affect tax filing, what you must submit to HMRC, and how to stay fully compliant — without unnecessary penalties or stress.
What Is a Dormant Account?
A dormant account is an account that has had no activity for a prolonged period, typically 12 months or more. Dormancy can apply to:
- Personal bank or savings accounts
- Limited companies that are not trading
- Company bank accounts with no transactions
The rules differ depending on whether the account belongs to an individual or a business.
What Is a Dormant Company (UK)?
A dormant company is a limited company that has had no significant accounting transactions during a financial year. This includes:
- No trading income
- No expenses
- No bank account activity (apart from permitted statutory costs)
Examples of permitted transactions:
- Companies House filing fees
- Penalties paid to Companies House
If any other transaction occurs, the company may no longer be classed as dormant.
Do Dormant Accounts Affect Tax Filing?
Dormant Companies and HMRC
Even if your company is dormant, you still have filing responsibilities.
Corporation Tax
- Dormant companies usually do not pay Corporation Tax
- HMRC must be formally notified that the company is dormant
- Once confirmed dormant, HMRC will not expect a Corporation Tax return unless activity resumes
Companies House
Dormant companies must still file annual dormant accounts, including:
- Dormant company accounts
- Confirmation statement (CS01)
Failure to file can result in:
- Late filing penalties
- Company strike-off
- Director compliance issues
Dormant Company Accounts: What Must Be Filed?
With Companies House
- Dormant company accounts (simplified format)
- Annual confirmation statement
- Filed every year, even if the company remains inactive
With HMRC
- HMRC must be informed that the company is dormant
- Once confirmed, no Corporation Tax return is required unless trading restarts
Dormant status does not happen automatically — HMRC must be notified.
Important Clarification: HS304 and Dormant Accounts
HS304 is not a dormant company form.
What Is HS304 Actually Used For?
HS304 is used by non-UK residents to:
- Claim relief under Double Taxation Agreements
- Reclaim UK tax already deducted on income such as pensions, interest, or royalties
It does not apply to:
- Dormant companies
- Dormant company tax filing
- Companies House submissions
If you’ve seen HS304 mentioned in relation to dormancy, this is a common misconception.
Dormant Accounts and Personal Tax
Dormant personal accounts usually have fewer compliance requirements, but there are still points to watch.
Interest and Tax
- Interest may still accrue on dormant savings accounts
- Interest over your personal savings allowance must be declared
- HMRC receives data directly from banks
Unclaimed Balances
- Dormant accounts may incur fees or be transferred to reclaim schemes
- Always check balances before closing accounts
Closing Dormant Accounts: What You Should Do
For Personal Accounts
- Check for interest or charges
- Transfer or withdraw remaining funds
- Close the account formally
- Keep closure confirmation
For Dormant Companies
You can either:
- Keep the company dormant and file annually
- Apply to strike off the company if it’s no longer needed
Striking off removes all future filing obligations — but must be done correctly.
Common Dormant Account Mistakes (and How to Avoid Them)
Assuming no filings are required- Missing Companies House deadlines
- Confusing dormant status with dissolved status
- Using the wrong HMRC forms
- Leaving dormant companies unattended for years
These mistakes often result in penalties, director notices, or forced strike-off.
How We Help with Dormant Accounts & Compliance
As a UK-based accounting practice, we support individuals and businesses with:
- Dormant company accounts
- Companies House filings
- HMRC dormant status notifications
- Corporation Tax compliance
- Company strike-off support
- Ongoing director compliance
Whether your company is newly dormant or has been inactive for years, we’ll ensure everything is filed correctly and on time.
FAQs: Dormant Accounts & Tax Filing
Do dormant companies need to file accounts?
Yes. Dormant companies must file dormant accounts with Companies House every year.
Do dormant companies pay Corporation Tax?
No — but HMRC must be informed of dormancy.
Can HMRC fine a dormant company?
Yes, if filings are late or incorrect.
Can I close a dormant company?
Yes. You can apply for voluntary strike-off if the company is no longer required.
Summary
Dormant accounts and dormant companies may seem inactive — but compliance never stops.
By understanding:
- When a company is truly dormant
- What must be filed
- Which forms apply (and which don’t)
you can avoid penalties and keep your financial affairs clean and compliant.
