HMRC have clearly defined that your tax is going to have be dealt with online.
The days of completing your books and a return last minute with HMRC are coming to an end. To be implemented by 2020 at the latest, HMRC have introduced Making Tax Digital (MTD).

By 2020, sole traders & landlords with income over £10,000 will have to manage tax online with HMRC. As a result, HMRC want all the following in one central online record;

• Income tax;
• PAYE;
• National Insurance;
• Pension;
• Self-Assessment;
• VAT &;
• Corporation tax.

Digital tax accounts for businesses will show an overview of income tax or corporation tax, VAT and National Insurance Contributions, plus income and expenses on a quarterly basis.

Taxpayers will be expected to use software accounting systems to record day-to-day transactions. You can categorise them into different types of income and feed back to HMRC quarterly. We recommend the use of XERO to assist with this.