China
China’s tax rate for freelancer's incomes progresses in three levels from 20% to 40% and the tax rate for regular employees in seven levels from 3% to 45%. A tax exemption of 4800 RMB per month for expats and of 3500 RMB per month for locals is granted.
Brazil
Under the individual income tax, individuals are taxed up to a maximum of 27.5% of their income. The rate is progressive from 0% to 27.5% and shared out into three brackets.
USA
The Federal income tax currently consists of 7 rate brackets: 10%, 15%, 25%, 28%, 33%, 35%, and 39.6%. The amount of tax you owe in April depends on your filing status and income level.
UK
In UK, each person has an income tax personal allowance, and income up to this amount in each tax year is free of tax. For the 2016/17 tax year, the tax-free allowance for under-65s with income less than £100,000 is £11,000. The divided income rate starts from 10% to 37.5%
Germany
Here the tax rate is up to 45 %. There is a solidarity surcharge at a rate of 5.5 % of income tax that has to be paid on top of this. Tax base is different for single and married.