Method, device and device for online declaration of special additional deduction of individual tax

The invention discloses a method for online declaration of special additional deduction of individual tax, can obtain to individual tax special additional deduction declaration request, Then the electronic contract is created and displayed to prompt the taxpayer to fill in the declaration information, so as to obtain the completed electronic contract, and the electronic contract is sent to the signatory for signing, and finally the completed electronic contract is sent to the tax authority or the enterprise unit for completing the declaration. Obviously, the method realizes the purpose of special additional deduction of individual tax on-line declaration by collecting declaration information, prompting users to sign and submit it to tax authorities, avoiding the time-consuming and labor-consuming problem of off-line declaration, and significantly improving the declaration efficiency. In addition, the invention also provides a device and a device for declaring the special additional deduction of individual tax