Are you not from the UK?All income is taxable/subject to National Insurance but this can vary significantly by the amount you earn (and at very low levels of income is 0 if i recall correctly). You get a tax-free personal allowance (generally the first 6k (approx), so given 5 to 600 pounds a month, if that were your only income then you probably won't be hit for too much. Hard to live on that tho.Plenty of sites that will indicate the tax you would pay, this one looks decent: http://listentotaxman.com/