I believe I understand the basics of the Safe Harbor Rule. Pay 90% of this year's tax or 100% (or 110% if income over 150K) of last year's tax.
Here is where it is slightly murky. I know if you have a W2 job, and you underpaid severely the first couple of quarters, you can simply have a larger amount withheld to meet the 90% or 100 / 110% numbers above.
Putting the W2 aside, as long as each of your 4 estimated payments meets the 90% 100 / 110% criteria quarter by quarter, you are safe. Is that correct?
Here is an extreme example: You made 100K in 2022 and your tax liability was 20K. Now, in 2023, you start out making 4 equal payments of 5K which is 100% of last year's liability. In February of 2023 you start trading Bitcoin and by May, you have made 500K! (This is not my story, just a hypothetical example.) The luck of the Irish is upon you and by the end of 2023, you have made over 5 million trading Bitcoin! Your tax liability will likely approach 2 million, yet you have only made 3 equal installments of 5K, and in January, you make the last installment of 5K, planning to square things up in April.
Are you "safe?"
Here is where it is slightly murky. I know if you have a W2 job, and you underpaid severely the first couple of quarters, you can simply have a larger amount withheld to meet the 90% or 100 / 110% numbers above.
Putting the W2 aside, as long as each of your 4 estimated payments meets the 90% 100 / 110% criteria quarter by quarter, you are safe. Is that correct?
Here is an extreme example: You made 100K in 2022 and your tax liability was 20K. Now, in 2023, you start out making 4 equal payments of 5K which is 100% of last year's liability. In February of 2023 you start trading Bitcoin and by May, you have made 500K! (This is not my story, just a hypothetical example.) The luck of the Irish is upon you and by the end of 2023, you have made over 5 million trading Bitcoin! Your tax liability will likely approach 2 million, yet you have only made 3 equal installments of 5K, and in January, you make the last installment of 5K, planning to square things up in April.
Are you "safe?"



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