maybe. there are rules to avoid penalties for not paying in enough taxes during the year.
There will be no federal penalties for not paying in enough taxes during the year if withholding
- And timely estimated tax payments equal or exceed 90% of your 2021 tax
- And timely estimated tax payments equal or exceed 100% of your 2020 tax (110% if your 2020 adjusted gross income was more than $150K)
- the balance due after subtracting taxes withheld from 90% of your 2021 tax is less than $1,000
- your total taxes are less than $1,000
State laws differ. If there are underpayment penalties under the normal method you do have the option of using the annualized income method to see if that will reduce or eliminate the penalties
To avoid a penalty for underpayment of 2021 taxes, you should make an estimated tax payment to cover the taxes on the capital gain.
You are past the first three quarterly deadlines for the estimated payments but can pay the full estimate by January 15, 2022.
Your state will also have their own estimate forms.
You can pay directly on the IRS website https://www.irs.gov/payments
Be sure to mark the right kind of payment and year.....2021 Estimate.