It is the responsibility of individuals and businesses to report their income in a tax return at the end of the financial year.
Expenses can also be accounted for, so remember to keep your receipts.
For in-depth advice, we advise owners to speak to their tax accountant about their individual situation.
Information on self-assessment and HMRC support helpline can be found here: https://www.gov.uk/government/organisations/hm-revenue-customs/contact/self-assessment