What you need to know before filing self-assessment for 2017/18.
It's a common scenario.
As the year draws to a close, the thought of your tax return is there, at the back of your mind. But with so much time before the deadline, you decide not to worry about it for now.
Then the weeks start to fly by, Christmas comes and goes, and soon you're planning for the New Year and getting back to work as normal.