Starting a new business? Get 40% off our accountancy services for 3 months! 😎


It’s easy to assume that HMRC know everything, but much of the UK tax system relies on taxpayers, employers, and sales platforms providing the right information. Realising you might have made a mistake after submitting everything can be a scary feeling, but HMRC actively encourage taxpayers to come forward if they find themselves in that situation.

What types of tax can I make a voluntary disclosure for?

Why might I need to make a voluntary disclosure?

When should I make a voluntary disclosure?

How do I make a voluntary disclosure?

You can make a voluntary disclosure about any type of tax including income tax, Corporation Tax if you run a limited company, Capital Gains Tax, and even National Insurance.

Tax returns can be very confusing documents, so it’s perfectly understandable that you might make a mistake. Even a typing error in your bookkeeping records can cause you to report your profit figures incorrectly, and therefore to pay the wrong amount of tax. Making a voluntary disclosure to HMRC can help you amend the error.
 Tax return services

You should tell HMRC as soon as you realise that a mistake has been made, even if you don’t think you will need to pay more tax. If you’re not sure, try to speak to your accountant as soon as possible so that they’re aware, and can advise you on what to do next.

There are several options available for making a voluntary disclosure. HMRC accepts disclosures online through its Digital Disclosure Service. This is a convenient way of informing HMRC of a mistake so they can process and assess it.

The Contractual Disclosure Facility (CDF) form should be used if you need to admit any involvement in tax fraud.

What happens after I make a disclosure?

HMRC will normally send out an acknowledgement letter containing your unique Disclosure Reference Number (DRN) within two weeks of receiving your disclosure. They’ll contact you with any follow-up questions or to request further evidence where necessary before deciding whether or not to accept the disclosure that you made.

If accepted, you’ll be contacted again with a Payment Reference Number (PRN) so that you can pay any additional tax that you owe by the deadline shown on the letter.

What information will I need?

If HMRC asks for additional information, you may need to provide annual accounts, bank statements and bookkeeping records. It’s best to be as transparent and cooperative as possible so that the process is as disruption-free to your business as it can be.

Penalties for mistakes

You may be hit with a penalty if the mistake or omission was due to careless or deliberate behaviour. The consequences of not reporting a mistake on your tax return could be even greater. That’s why it’s always best to make a voluntary disclosure as soon as you realise that there is a problem! While making a voluntary disclosure may be an uncomfortable process, it’s much better to get it done and out of the way.

Learn more about our online accounting services for businesses. Call 020 3355 4047 to chat to the team, and get an instant online quote.

About The Author

Lisa Hinton-Hill

I've worked in the accountancy sector for more than 15 years, and have extensive experience supporting sole traders, partnerships, and SME's. Learn more about Lisa.

More posts by this author
Notify of
Inline Feedbacks
View all comments

Read more posts...

What is a Non-Established Taxable Person for VAT?

There are special VAT rules in place for online sellers who are classed as non-established taxable persons (NETPs), and use an online…

Read More

The Accountancy Partnership – Our Positive Reviews

Here at The Accountancy Partnership, we’re proud of our customer reviews The reviews we receive from our customers show how hard we…

Read More

What Type of Legal Structure Should I Choose When I Start a Business?

The structure that you choose when you start a business affects how the business operates, the amount of tax you pay, how…

Read More
Back to Blog...

Confirm Transactions

The number of monthly transactions you have entered based on your turnover seem high. A transaction is one bookkeeping entry such as a sale, purchase, payment or receipt. Are you sure this is correct?

Yes, submit my quote
No, let me change it

Please contact our sales team if you’re unsure

VAT Returns

It is unlikely you will need this service, unless you are voluntarily registered for VAT.

Are you sure this is correct?

Yes, the business is VAT registered
No, let me change it

Call us on 020 3355 4047 if you’re not sure.


You will receive our bookkeeping software Pandle for free, as part of your package.

You can use this to complete your own bookkeeping, or we can provide a quote to complete your bookkeeping for you.

Please select and option below:

I will do my own bookkeeping
I want you to do my bookkeeping

Call us on 020 3355 4047 if you’re not sure.