Can anyone help me with a question about what to include as total taxable income? I am self employed and have a contract where I sometimes have to purchase items on behalf of the company I contract to. For example, I write their newsletter, get it professionally printed and then post it out to contacts. Then when I invoice them at the end of the month I include a section for my hours (taxable income) and then list the expenses they need to reimburse me for such as the printing, stamps and envelopes. They pay me for my time and also for the goods and services.
My question is do I include the expenses in my total taxable income? As they are goods that I am paid back for I don't think they class as income, they are just costs I incur on their behalf that they pay me back for. Is this the case? I don't think I should include them on my tax return at all and that I should just document them on my personal records but just want to confirm that this is correct.