What is the final required payment date for estimated tax payments for the following year?

For individuals who are required to make estimated tax payments, the last date for submitting these payments for the previous tax year is typically January 15th of the following year. This final payment covers any remaining tax liability for the prior year, ensuring that taxpayers settle their obligations before the tax return due date.

Taxpayers can also avoid underpayment penalties by ensuring their total estimated tax payments meet certain thresholds by this date. It's important to recognize that the due dates for estimated payments earlier in the year occur on April 15th, June 15th, and September 15th, which are for payments pertaining to the current tax year, while January 15th addresses the final payment for the previous year's liabilities.