Some people are surprised to learn they're due a large federal income tax refund when they file their taxes. Others are surprised that they owe more taxes than they expected. When this happens, it's a good idea to check your federal tax withholding or payments. Doing so now can help avoid a tax surprise when you file your 2013 tax return next year.

Here are some tips to help you bring the tax you pay during the year closer to what you'll actually owe.

Wages and Income Tax Withholding

  • New Job. Your employer will ask you to complete a Form W-4, Employee's Withholding Allowance Certificate. Complete it accurately to figure the amount of federal income tax to withhold from your paychecks.
  • Life Event Change your Form W-4 when certain life events take place. A change in marital status, birth of a child, getting or losing a job, or purchasing a home, for example, can all change the amount of taxes you owe. You can typically submit a new Form W-4 anytime.
  • IRS Withholding Calculator This handy online tool will help you figure the correct amount of tax to withhold based on your situation. If a change is necessary, the tool will help you complete a new Form W-4.

Self-Employment and Other Income

  • Estimated Tax. This is how you pay tax on income that's not subject to withholding. Examples include income from self-employment, interest, dividends, alimony, rent and gains from the sale of assets. You also may need to pay estimated tax if the amount of income tax withheld from your wages, pension or other income is not enough. If you expect to owe a thousand dollars or more in taxes and meet other conditions, you may need to make estimated tax payments.
  • Form 1040-ES. Use the worksheet in Form 1040-ES, Estimated Tax for Individuals, to find out if you need to pay estimated taxes on a quarterly basis.
  • Change in Estimated Tax. After you make an estimated tax payment, some life events or financial changes may affect your future payments. Changes in your income, adjustments, deductions, credits or exemptions may make it necessary for you to refigure your estimated tax.
  • Additional Medicare Tax A new Additional Medicare Tax went into effect on Jan. 1, 2013. The 0.9 percent Additional Medicare Tax applies to an individual's wages, Railroad Retirement Tax Act compensation and self-employment income that exceeds a threshold amount based on the individual's filing status. For additional information on the Additional Medicare Tax, see our questions and answers.
  • Net Investment Income Tax A new Net Investment Income Tax went into effect on Jan. 1, 2013. The 3.8 percent Net Investment Income Tax applies to individuals, estates and trusts that have certain investment income above certain threshold amounts. For additional information on the Net Investment Income Tax, see our questions and answers.

See Publication 505, Tax Withholding and Estimated Tax, for more on this topic. You can get it at IRS.gov or by calling 1-800-TAX-FORM (1-800-829-3676).

TaxACT helps you determine how much you should withhold and complete a Form W-4 you can print and turn into your employer. Simply sign in to your TaxACT Online account or start your desktop program and click on the blue "Next Year" tab.

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Upcoming Tax Dates

February 2 Individuals who must make estimated tax payments
If you did not pay your last installment of estimated tax by January 15, you may choose (but are not required) to file your income tax return (Form 1040) for 2014 by February 2. Filing your return and paying any tax due by February 2 prevents any penalty for late payment of the last installment. If you cannot file and pay your tax by February 2, file and pay your tax by April 15.

February 2 All Employers
Give your employees their copies of Form W2 for 2014. If an employee agreed to receive Form W2 electronically, have it posted on a website and notify the employee of the posting.

February 2Payers of gambling winnings
If you either paid reportable gambling winnings or withheld income tax from gambling winnings, give the winners their copies of Form W2G.

February 2 Nonpayroll taxes
File Form 945 to report income tax withheld for 2014 on all nonpayroll items, including backup withholding and withholding on pensions, annuities, IRAs, gambling winnings, and payments of Indian gaming profits to tribal members. Deposit or pay any undeposited tax under the accuracy of deposit rules.

February 2 Social Security, Medicare, and withheld income tax
File Form 941 for the fourth quarter of 2014. Deposit or pay any undeposited tax under the accuracy of deposit rules. If your tax liability is less than $2,500, you can pay it in full with a timely filed return. If you deposited the tax for the quarter timely, properly, and in full, you have until February 10 to file the return.

February 2 Certain small employers
File Form 944 to report social security and Medicare taxes and withheld income tax for 2014. Deposit or pay any undeposited tax under the accuracy of deposit rules. If your tax liability is $2,500 or more for 2014 but less than $2,500 for the fourth quarter, deposit any undeposited tax or pay it in full with a timely filed return. If you deposited the tax for the year timely, properly, and in full, you have until February 10 to file the return.

February 2 Farm employers
File Form 943 to report social security and Medicare taxes and withheld income tax for 2014. Deposit or pay any undeposited tax under the accuracy of deposit rules. If your tax liability is less than $2,500, you can pay it in full with a timely filed return. If you deposited the tax for the year timely, properly, and in full, you have until February 10 to file the return.

February 2 Federal unemployment tax
File Form 940 for 2014. If your undeposited tax is $500 r less, you can either pay it with your return or deposit it. If it is more than $500, you must deposit it. However, if you deposited the tax for the year timely, properly, and in full, you have until February 10 to file the return.

February 2All businesses
Give annual information statements to recipients of certain payments you made during 2014 - Details

February 2Form 720 taxes
File Form 720 for the fourth quarter of 2014.

February 2 Wagering tax
File Form 730 and pay the tax on wagers accepted during December 2014.

February 2Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in December 2014.

February 10Nonpayroll taxes
File Form 945 to report income tax withheld for 2014 on all nonpayroll items. This due date applies only if you deposited the tax for the year timely, properly, and in full.

February 10Social security, Medicare, and withheld income tax
File Form 941 for the fourth quarter of 2014. This due date applies only if you deposited the tax for the quarter timely, properly, and in full.

February 10Certain small employers
File Form 944 to report social security and Medicare taxes and withheld income tax for 2014. This due date applies only if you deposited the tax for the year timely, properly, and in full.

February 10Farm employers
File Form 943 to report social security and Medicare taxes and withheld income tax for 2014. This due date applies only if you deposited the tax for the year timely, properly, and in full.

February 10Federal unemployment tax
File Form 940 for 2014. This due date applies only if you deposited the tax for the year timely, properly, and in full.

February 10Employees who work for tips
If you received $20 or more in tips during January, report them to your employer - Details

February 11Communications and air transportation taxes under the alternative method
Deposit the tax included in amounts billed or tickets sold during the first 15 days of January.

February 13Regular method taxes
Deposit the tax for the last 16 days of January.

February 17Everyone
Federal Holiday (Washington's Birthday) - Details

February 17Individuals
If you claimed exemption from income tax withholding last year on the Form W-4, you must file a new Form W-4 by this date to continue your exemption for another year - Details

February 17All businesses
Give annual information statements to recipients of certain payments you made during 2014 - Details

February 17Publication 509 (2015)
All payments reported on Form 1099S, Proceeds From Real Estate Transactions. Substitute payments reported in box 8 or gross proceeds paid to an attorney reported in box 14 of Form 1099MISC.

February 17Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in January.

February 17Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in January.

February 18All employers
Begin withholding income tax from the pay of any employee who claimed exemption from withholding in 2014, but did not give you Form W4 to continue the exemption this year.

February 25Communications and air transportation taxes under the alternative method
Deposit the tax included in amounts billed or tickets sold during the last 16 days of January.

February 27Regular method taxes.
Deposit the tax for the first 15 days of February.

View More Tax Dates