"I provide my services under contracts..." - do I tick this box?I am completing my Self Assessment tax return and trying to figure out whether to tick the "I provide my services under contracts for professional or other services and these contracts span my accounting date" box. I am on the cash basis and have a relatively small turnover of around £15,000 per annum. I am a Private Tutor and sometimes parents will pay me for a few lessons in advance. A couple of times, one or two lessons paid in advance have fallen in the following tax year. Do I need to tick the box?