I guess I can throw them away, but I am trying to understand why I even have them? In 2023 Tax Return I didn't have this notice/warning about potential penalty. The federal tax I owed in 2023 was below 500 USD, now for 2024 it is slightly above 1000 USD. Is that a reason I have those vouchers with a warning? I would like to avoid any penalty, but I don't want to send physical checks every 4 months for the income that I am not able to predict.
"you may incur underpayment penalties if you do not make these four estimated tax payments" - that phrase seems quite scary, but I do all payments with my tax return in full in February-March by doing e-file. I don't understand why I need to mail checks every 4 months to avoid the penalty by paying in advance.
