"Estimated" tax payments are those extra tax payments you may have made to the IRS, or State during the year.
They are usually done quarterly, but occasionally single payments are needed for unusual income gains/distributions the taxpayer receives that normal withholding won't cover when tax-time comes.
These "estimated" payments must be initiated separately by you, either by mailing in a check with a 1040ES tax voucher to the IRS, or a separate one to your state (state voucher names vary), or by making an online payment on the IRS DirectPay website, or thru the EFTPS website.
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"Estimates" do not refer any balance due payment you made last year, nor does it refer to a payment you might have made if you filed for an "Extension".
Tax Withholding represented on various tax forms you get each year, like W-2, W-2G, 1099-R, SSA-1099, etc ? Those are NOT "Estimates" .
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
