Each week in our Ask the Editor series, Joy Taylor, The Kiplinger Tax Letter editor, answers questions on topics submitted by readers. This week, she’s looking at five tax questions on federal estimated tax payments and federal income tax withholding. (Get a free issue of The Kiplinger Tax Letter or subscribe.)
1. Underpayment penalty
Question: How much federal income tax must be withheld to avoid paying a tax penalty to the IRS when I file my Form 1040 each year?
Joy Taylor: You are off the hook from the underpayment penalty if you prepay, through estimated tax payments or withholding, at least 90% of your current year’s tax bill or 100% of the tax that you owed for the immediately preceding year (110% if your adjusted gross income for the immediately preceding year exceeded $150,000).
2. Due dates for estimated tax payments
Question: I have to start making estimated tax payments to the IRS this year. What are the due dates for the payments, and how can I make them?
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Joy Taylor: Estimated tax payments are for people with income that is not subject to withholding. Taxpayers usually make estimated tax payments to the IRS in four equal installments. The first remittance for 2026 was due April 15. The other dates are June 15, September 15 and January 15, 2027. Victims of federally declared disasters may have more time to pay their estimated taxes.
There are several ways to make estimated tax payments.
3. IRS withholding calculator
Question: Do you know whether the IRS has a federal income tax withholding calculator on its website, and is the calculator updated for changes in tax laws?
Joy Taylor: The IRS does have a withholding estimator on its website. It helps you figure out whether you are having the right amount of federal income tax withheld from wages and pensions. The tool asks about various sources of income, provides tips on credits and deductions, and estimates how much withholding to request. And it is usually updated to account for tax law changes.
4. IRS forms to request withholding
Question: Can you tell me the various IRS forms I would use to request more or less income tax withholding from Social Security, wages, IRA distributions, etc.?
Joy Taylor: Employees who want more or less income tax withheld from their wages can submit a new Form W-4 to their employers. People receiving pension or annuity payments can submit Form W-4P. IRA owners use Form W-4R. Social Security recipients have two options. They can fill out Form W-4V and mail it in. Or, if they have an online Social Security account, they can request through their account that more or less tax be withheld from their monthly Social Security payments.
5. Withholding tax from a late-year IRA distribution
Question: I am retired, and most of my income is from IRA required minimum distributions (RMDs), Social Security, and dividends and capital gains from taxable investments. Someone told me that I don’t have to make quarterly estimated tax payments. I can instead wait until year-end and request that my IRA custodian withhold a lump sum amount of income tax from my year-end IRA distribution to satisfy my federal income tax liability for the year. Is that true?
Joy Taylor: Pretty much, yes. For federal income tax purposes, tax withheld at any point in the year is treated as if evenly paid throughout the year. Some retirees rely on this rule to have federal income taxes that they expect to owe for a year withheld from a December RMD instead of making quarterly estimated tax payments. Kiplinger regularly advises retirees who are falling short on their tax withholding to have more tax withheld from a year-end IRA payout. Read more in our article on RMD withholding strategies.
State tax rules may differ, and some sponsors don’t withhold state income taxes, so be sure to check your specific state law.
About Ask the Editor, Tax Edition
Subscribers of The Kiplinger Tax Letter, The Kiplinger Letter and The Kiplinger Retirement Report can ask Joy questions about tax topics. You’ll find full details of how to submit questions in each publication. Subscribe to The Kiplinger Tax Letter, The Kiplinger Letter or The Kiplinger Retirement Report.
We have already received many questions from readers on topics related to tax changes in the One Big Beautiful Bill, retirement accounts and more. We will continue to answer these in future Ask the Editor roundups. So keep those questions coming!
Not all questions submitted will be published, and some may be condensed and/or combined with other similar questions and answers, as required editorially. The answers provided by our editors and experts, in this Q&A series, are for general informational purposes only. While we take reasonable precautions to ensure we provide accurate answers to your questions, this information does not, and is not intended to, constitute independent financial, legal, or tax advice. You should not act, or refrain from acting, based on any information provided in this feature. You should consult with a financial or tax advisor regarding any questions you may have in relation to the matters discussed in this article.
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