Jodie will be able to help and advise with your self assessment and with prices starting form just £12.50 per hour why do it yourself. Jodie will provide a fast and professional service for all your self assessment needs. She will also be happy to assist sorting out any historic problems that you may have.
It is always best to be totally honest with HMRC, if however you do make a genuine mistake it is advisable to contact them as soon as you have identified the error to avoid additional charges.
The link below details the possible penalties for not telling HMRC about an under-assessment on your Tax return.