Example of benefit from the double taxation convention: Suppose interest on NRAs [clarification required] bank deposits draw 30 percent tax deduction at source in India. Since India has signed agreements with several countries to avoid double taxation, the tax can only be deducted at 10-15% instead of 30%. The DBAA applies to U.S. federal income tax, that is, U.S. income tax. However, the agreement does not apply to the following taxes: India has one of the largest networks of tax treaties aimed at avoiding double taxation and preventing tax evasion. The country has entered into dual tax evasion agreements (DBAAs) with more than 85 countries, in accordance with Section 90 of the Income Tax Act, 1961. A DBA (double taxation agreement) may require that the tax be levied by the country of residence and that it be exempted in the country where it is created. In other cases, the resident may pay a withholding tax on the country where the income was collected and the taxpayer receives a compensatory tax credit in the country of residence to take into account the fact that the tax has already been paid. In the first case, the taxpayer (abroad) would declare himself non-resident. In both cases, the DBA may provide for the two tax authorities to exchange information on these returns.
Because of this communication between countries, they also have a better view of individuals and businesses trying to evade or evade tax.  1. If you eliminate double taxation, reduce the tax cost of “global” businesses. In January 2018, a DBA was signed between the Czech Republic and Korea.  The treaty creates double taxation between these two countries. In this case, a Korean resident (person or company) who receives dividends from a Czech company must compensate czech tax on dividends, but also Czech tax on profits, profits of the company that distributes the dividends. The contract is for the taxation of dividends and interest. Under this contract, dividends paid to the other party are taxed at a maximum of 5% of the total dividend amount for corporations and individuals. This contract reduces the tax limit on interest paid from 10% to 5%.