2019 I only had normal income w2 tax.

2020 I started messing with stock market and will owe 20k in taxes.

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I checked my 2019 taxes payed and my 2020 taxes payed.

The taxes I payed in 2020 were more than the taxes I owed in 2019.

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This means I won't have a penalty when I file 2020 this month. My state has the same 100% rule.

Let me know if this is wrong.

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So if that's all good I want to clarify how to go from here.

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I have a bad first quarter in the market and lose money. I think this means I don't make quarterly payment April 15. Then I have a really good 2nd quarter that will blow out last year so I need to make quarterlies.

Do I take that tax I'm going to owe and spread it out over the remaining 3 quarters or pay it all 2nd quarter and then don't make payments 3rd and 4th quarter?

Not sure if this question requires input from a tax professional. Hoping this question is general enough that people that do this quarterly dance every year know the deal