Form 2210 Part II Line D is populated from your entries for the Estimated Tax Payments section of TurboTax. You may wish to review this section if Form 2210 doesn't reflect your tax situation.
In TurboTax Online, open your return and go to Deductions & Credits >> Estimates and Other Taxes Paid >> Estimated Tax Payments. Click Revisit then choose Federal estimated taxes for 2021 to review your entries.
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