estimated tax在1/15前交到底还有罚款吗？

无知的我完全不了解这档子事儿 是必须要每个季度都预交才不会有罚款？还是说在1/15前交掉就不会有罚款了？如果还有罚款的话，是不是就罚前三个季度的？不好意思我是一团雾水
还有一个困惑是 - 如果我2024年的工资比2023前翻倍了，那是不是我应该大概率已经交够了110%了？赚的多交的多嘛？

1/15前交没有penalty, but you’ll have to pay interests if you underpaid in the other quarters

Oh I see! 请问interest多少呢？不好意思 我实在太无知了

The IRS charges interest on underpayment of estimated taxes based on the federal short-term interest rate plus 3%. This interest rate is adjusted quarterly. If you underpay your estimated taxes, the interest is calculated from the due date of the estimated payment until the date the payment is made. To avoid underpayment penalties, ensure you meet one of the following safe harbor rules: 1. Pay at least 90% of the current year’s tax liability. 2. Pay 100% of the previous year’s tax liability (or 110% if your adjusted gross income was over $150,000). You can find the current interest rates and calculate potential penalties on the IRS website or consult a tax professional for assistance.

谢谢！i assume夫妻共同报税的话AGI指的就是夫妻两人的总收入了对吧

去查自己的工资单啊，看今年交了多少税再和去年的税表比一下就知道了。