Estimated Tax (Form 1040-ES)

Income tax is a pay-as-you-go proposition. If you’re an employee, this requirement is met through withholding. If you’re self-employed, however, you must make estimated tax payments to meet both your income and self-employment tax obligations unless you have other income, such as wages, through which you can have the tax withheld..

Estimated tax is the tax you expect to owe the IRS. You should make estimated payments if you receive a substantial amount of taxable income not subject to withholding. Examples include gains from the sale of stock or a personal residence (if the gain isn’t considered tax-free income), and interest or dividends.

Estimated Tax Payments

Estimated tax payments for 2011 are due April 15, 2011, June 15, 2011, September 15, 2011, and January 15, 2012. You can make them using any of these methods:

You need to make estimated tax payments and file Form 1040-ES if your estimated tax due is $1,000 or more, and the total amount of your tax withholding and refundable credits will be less than the smaller of:

There are also special rules for higher income taxpayers. If your 2010 adjusted gross income (AGI) was greater than $150,000 ($75,000 if you’re married and filing separately), you must prepay 110% instead of 100% of the 2010 tax to avoid a possible underpayment penalty for 2011.

Example: Your 2010 tax liability was $3,800. At the beginning of 2011, you expect your 2011 income tax to be $2,400, so you arrange to have a total of $2,200 withheld from your paycheck during the year. Then, in March, you sell some business assets, which gives you an additional $6,975 in income and increases your expected 2011 tax liability to $3,560.

You must pay 90% of the $3,560 you expect to owe for 2011, which is $3,204. Because you’ve already arranged to have $2,200 withheld from your paycheck, you need to make estimated payments totaling $1,004 ($3,204 - $2,200). You have several options to choose from to avoid a penalty. You can:

Use our H&R Block Tax Payment Planning Worksheet to figure your estimated taxes for 2011. For more information about the estimated tax penalty, see Underpayment of Estimated Tax.