Very brief summary, if you had a lump sum of income in the last quarter of 2022, an estimated payment is due January 15, 2023, unless you file your completed tax return and pay the tax by January 31. (This seems unlikely, since you probably won’t get the 1099 form from the broker before then.)
The minimum estimate you must make in your situation is an amount equal to your tax liability for last year, or your actual tax liability for this year, whichever is less. If you overpay your estimate, you will get the difference back as a refund. If you underpay the estimate by more than $1000, the IRS will probably assess a penalty.
You can make your payment at www.irs.gov/payments, be sure to select 2022 estimated taxes from the reason menu.
