The taxpayers by way of deduction of tax at source is that the law imposes a duty to pay tax paid every time a payment to a person liable to tax, then the tax deducted at this unit . The Revenue Department set the tax law is deducted for tax credit on income tax normally. This method involves collecting the state determines the burden of tax collection to private collection agents, the State may require the payment was made to withhold tax on the money they paid for submission to the government on the rate and exceeding the speed limit at the legal limit how to deduct tax at source to prevent tax evasion of the taxpayer and another way of making the state collecting facility tax prior to the normal waste.