Keep track of tax-deductible expenses, such as the supplies and equipment you buy.记下可减免税的支出，譬如你购买的日常用品和设备。Your donation is tax-deductible.你的捐赠可以免税。If you're self-employed, your travel expenses are tax-deductible.如果你是个体经营，你的差旅开支可在计税前从总收入中扣除。The expenses of raising children are tax-deductible for working mothers.子女抚养费在计算所得税时可从工作的母方所得总额中扣除。