New start-up owners rush to understand tax rules With a record number of new businesses being launched last year accountants are preparing for a wave of requests for help as start-up owners get to grips with regulations ahead of the January 31 deadline for returns. More than 600,000 - one in 10 - report suffering panic attacks while one in five endures sleepless nights, new research from online accounting experts Sage shows. Almost half of owners say they would struggle to explain terms like Making Tax Digital or Income Tax Self-Assessment to somebody else. Many would rather clean the oven, stand on a plug or visit the dentist than file their return. We find this a common problem when we speak to many motorsport businesses and we strive to take the uncertainty and complexity out of the process by explaining things clearly and simply.