I pay social security in both companies. Do I have to pay taxes?

Legal analysis: reasons why individuals need to pay taxes: If the special additional deduction has been filled in, it may be because of these two reasons. 1. Having worked in more than two companies, the basic deduction fee (5000/ month) is deducted repeatedly when paying taxes in advance; 2, in addition to wages, taxpayers also have labor remuneration, remuneration, royalties. Reasons why individuals need to pay back taxes: If special additional deductions have been filled in, it may be because of these two reasons. 1. Having worked in more than two companies, the basic deduction fee (5000/ month) is deducted repeatedly when paying taxes in advance; 2, in addition to wages, taxpayers also have labor remuneration, remuneration, royalties. 3. Illegal pursuit. That is, if a taxpayer or withholding agent violates the provisions of the tax law and fails to pay taxes, evades taxes or refuses to pay taxes, the tax authorities shall, in addition to recovering the underpaid or unpaid taxes, impose a fine in accordance with the provisions of the tax law. If the case constitutes a crime, it shall be transferred to judicial organs for criminal responsibility.

Legal basis: Article 11 of the Individual Income Tax Law of People's Republic of China (PRC) stipulates that individual residents who obtain comprehensive income shall pay individual income tax on an annual basis; If there is a withholding agent, the withholding agent shall withhold the advance tax on a monthly basis or every time; If settlement is needed, it shall be settled within March 1 day to June 30th of the following year. The withholding measures shall be formulated by the competent tax authorities of the State Council. Where individual residents provide withholding agents with special additional deduction information, the withholding agent shall deduct the withheld tax in accordance with the provisions when withholding monthly, and shall not refuse. If a non-resident individual has a withholding agent for income from wages and salaries, remuneration for labor services, remuneration for manuscripts and royalties, the withholding agent shall withhold and pay the tax on a monthly basis or every time, without making final settlement.