From when do I start recording the expenses when establishing a sole proprietorship?

I m considering establishing a sole proprietorship, from information gathered so far, it does not need to be registered from DTI. My question is: for tax puposes, what is the date from which I can make expenses tax deductible, as there will be no registration date?
Also, is an office space required to meet minimum SARS requirements for office space deductions?
Looking forwars to your feedback. Regards

Sole Proprietorships are effectively trading in one's own name and the taxes will be based on the individual tax brackets. So this will be determined on the individual tax year being 1 March - 28 Feb of each year.

Please make use of our decider for home office expenses