If I pay next year's social security fee this year, don't I have to pay next year?

If you pay this social security fee this year, of course you don't have to pay it next year. This is normal. If you only pay your social security fee this year, of course, you will have to pay the social security fee next year. Even on that day, you eat a meal today and eat it tomorrow. This is the same reason. However, if you pay social security today, you pay social security within this year, for a whole year, and then you pay social security next year and tomorrow. Of course, you don't have to pay it after you pay it. It's simple, because you've already paid.