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The moment you earn a side income in the UK, a load of your everyday spending becomes tax-deductible. Most people never claim a penny of it.

5 things you can legally write off. Save this thread.


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  1. A slice of your home bills.

Work on your side business from home and you can claim a proportion of your rent or mortgage interest, energy and broadband, based on the space used and the time spent. HMRC even has a simplified flat-rate version if you don't want to do the maths.


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  1. Mileage and travel.

Driving to a client, a supplier or a job? You can claim 45p a mile for the first 10,000 miles a year. Train fares and parking for business trips count too. Keep a simple log from day one.


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  1. Equipment and software.

The laptop, the phone, the camera, the subscriptions — Adobe, Canva, hosting, your scheduling tools. If you bought it for the business, it comes off your taxable profit.


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  1. The cost of what you sell.