If you are self-employed, knowing which everyday costs you can legitimately claim can make a real difference to how much tax you end up paying.

The question of which costs you can claim against your self-employed business is a common one. If you are self-employed it is important to be aware if an expense is allowable or not. Any allowable costs can be used to reduce your taxable profit.

HMRC lists the following office expenses as being allowable:

• office costs, for example stationery or phone bills
• travel costs, for example fuel, parking, train or bus fares
• clothing expenses, for example uniforms
• staff costs, for example salaries or subcontractor costs
• things you buy to sell on, for example stock or raw materials
• financial costs, for example insurance or bank charges
• costs of your business premises, for example heating, lighting, business rates
• advertising or marketing, for example website costs
• training courses related to your business, for example refresher courses

If you work from home, you may also be able to claim a proportion of your costs for things including heating, electricity, Council Tax, mortgage interest or rent and internet and telephone use. You will need to adopt a fair and reasonable approach to apportioning your costs, such as by reference to the number of rooms used for business purposes or the proportion of time you work from home.