If an individual pays social security by himself, can he choose how much to pay?

Yes, you can. He will give you several grades if you pay social security. It says how much to pay for each grade, ranging from 400 to 600,800, 1000 to more than 3,000. You can choose according to your personal economic ability and how high you want to protect in the future. And you can change grades every year, that is, if the economy is not good this year, you can choose the bottom, and if the conditions are good next year, you can choose the high one.