First assessment

I am having difficulty completing the SA100 form and have been told the online filing should be easier, however, my internet connection for both landline and mobile are frequently very poor and a online submission may fail or become impracticable. If I start an online filing, can I revert to paper (SA100) or am I committed to online once started.

Hi 
You will need to submit your Self Assessment either by paper form or online. If possiblie the online return will be quicker to be processed to your record and allow you to amend online if needed. If submitting by paper the deadline date for the 2023/24 tax return is 31 October 2024.
If you need help filing the tax return you can conact the helpline Selling online and paying taxes - information sheet.
Thank you.