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Estimated tax payment due TODAY!

September 15, 2010

My very, very bad! Today, Sept. 15,  is the due date for the third estimated tax voucher (sometimes called quarterly payment), known as Form 1040ES.

The reminder is in the left column there under September Tax Moves, but I like to give y’all a separate blog post notice, too.

My excuse for forgetting: I set up my payment last week via the IRS’ Electronic Federal Tax Payment System, or EFTPS, so I  totally forgot about today’s deadline.

It’s too late now to use EFTPS, but if you plan to mail your third estimated tax payment, you’ve got time. Your 1040-ES is considered timely filed if it’s postmarked today.

Or you can pay via credit card. Use one of the IRS-approved vendors — Official Payments, Link2Gov or payUSAtax — today to get your quarterly payment posted in time.

Here’s the annual payment schedule so you won’t have to worry if I get pre-occupied and am late with a reminder in January:

Estimated tax dueFor income received from
April 15  Jan. 1 through March 31
June 15  April 1 through May 31
Sept. 15  June 1 through Aug. 31
Jan. 15 (next tax year)  Sept. 1 through Dec. 31

The estimated deadlines follow the same IRS rules when it comes to a due date on a Saturday, Sunday or legal holiday; that is,  you have until the next business day to make the payment.

And don’t forget about your state taxes if you make estimated payments at the level, too. Most follow the federal payment calendar.

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The More Tax Posts tab at the top of this page will take you to, well, more tax posts. You also can search below for a tax topic. 

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TO WRAP UP 2026

It’s over! With October’s extended filing deadline behind us, it is now time to focus on year-end moves to reduce your 2026 tax bill. 

You’ll find ways to do just that on the Tax Tips page (see the More Tax Posts drop-down menu at the top of the blog), as well as the separate tax tip pages for each month, notably October through December. If you’re on the Tax Tips page, you’ll find a monthly list at the end of this column. If you’re on another blog page, you can head straight to the October tips; at the bottom of that tips page you’ll find links to all the other 11 months’ collections of tax advice.

Not to spoil what you’ll find in that tax advice, but it does cover such things as tax deductions for charitable donations, investment moves that could reduce tax due, and ways to max out your tax-favored retirement savings. 

Finally, as the year winds down, things get hectic. There are lots of other things to occupy our time, like the much more fun upcoming holidays. But don’t lose sight of taxes, since timing is key. To be of use, most tax moves must be made by the end of the tax year. That’s Thursday, Dec. 31, which also is the last business day of the year. 

So that you don’t miss that final tax year deadline, also keep an eye on the countdown clock below. It will keep you on top of just how much time is left to make important, tax-saving moves. (Note: I’m in the Central Time Zone, so adjust accordingly for where you live.)

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