Thanks to error by my annuity provider, they did not implemented a requested increase to my withholding. As a result, when I file my return this spring, instead of slipping in just under the $1000 threshold for owing no penalty, I will owe about $2000. This was the last of my 2021 quarterly payments from this annuity, so no chance to withhold the amount going forward.
Is the IRS likely to do anything but charge me interest ? (FWIW, the reason my taxable income was so much higher is that I decided to sell a bunch of stock, hence long-term capital gains).
What is my best course of action now ? Should I make a $2000 estimated-tax payment now ? I'll still owe interest (if I don't file Scedhule AI) because I missed the first two estimated-tax deadlines, as well as the third. But presumably it'll be a bit less interest, and perhaps more importantly, I imagine it'll be less likely to raise eyebrows at the IRS than if I wait until I file my return.
Thanks for any advice.