Stephanie

Hi - I've recently started renting a room on Airbnb during the school holidays. I'm not sure yet how much I'll earn in a year but I'm wondering what the tax allowance is? Do I add it to my earnings on my Self Assessment form? Also, can you tell me what expenses are allowed, for example can I claim a percentage of my energy / water bills? I've noticed the Rent a room scheme, is this relevant to me? Thank you