This depends on the activity for which you’re registered with the tax office. We’ll advise you of the specifics when we start working together, but basically any expense that is related to the running of your business which may include equipment, supplies, employees, and more.

Assets, for example a van, are a little different. They are subject to depreciation schemes, which in plain English means the tax is not directly deductible when you purchase them, but the deductions will be spread over a number of years.