Self Assessment is something that more and more of us are required to comply with, so being on top of your tax affairs will enable you to comply with the tax return filing deadlines and give you a much better chance of paying any due taxes on time.
HMRC impose heavy fines for late filing of tax returns, they can also charge significant amounts in surcharges and interest for late paid taxes.
HMRC Taxes applicable to persons
Income Tax applicable to ; Salary, Benefits in Kind, Rental Profits, Bank Interest Received, Dividends Received, Sole Trade Profits, Share of Partnership Profits
Capital Gains Tax
Stamp Duty / Scottish land Tax