Each year, many people get a larger refund than they expected. Some find they owe a lot more tax than they thought they would. If this happened to you, review your situation to prevent another tax surprise. Did you marry? Have a child? Have a change in income? Some life events can have a major effect on your taxes. You can bring the tax you pay closer to the amount you owe. Here are some key IRS tips to help you come up with a plan of action:

  • New Job. When you start a new job, you must fill out a Form W-4, Employee's Withholding Allowance Certificate and give it to your employer. Your employer will use the form to figure the amount of federal income tax to withhold from your pay. Use the IRS Withholding Calculator on IRS.gov to help you fill out the form. This tool is easy to use and it's available 24/7.
  • Estimated Tax. If you earn income that is not subject to withholding you may need to pay estimated tax. This may include income such as self-employment, interest, dividends or rent. If you expect to owe a thousand dollars or more in tax, and meet other conditions, you may need to pay this tax. You normally pay it four times a year. Use the worksheet in Form 1040-ES, Estimated Tax for Individuals, to figure the tax.
  • Life Events. Check to see if you need to change your Form W-4 or change the amount of estimated tax you pay when certain life events take place. A change in your marital status, the birth of a child or buying a new home can change the amount of taxes you owe. In most cases, you can submit a new Form W–4 to your employer anytime.
  • Changes in Circumstances. If you are receiving advance payments of the premium tax credit, it is important that you report changes in circumstances, such as changes in your income or family size, to your Health Insurance Marketplace. You should also notify the Marketplace when you move out of the area covered by your current Marketplace plan. Advance payments of the premium tax credit help you pay for the insurance you buy through the Health Insurance Marketplace. Reporting changes will help you get the proper type and amount of financial assistance so you can avoid getting too much or too little in advance.

For more see Publication 505, Tax Withholding and Estimated Tax. You can get it on IRS.gov/forms at any time.

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Upcoming Tax Dates

February 10 — Social security, Medicare, and withheld income tax
File Form 941 for the fourth quarter of 2017. This due date applies only if you deposited the tax for the quarter timely, properly, and in full.

February 10 — Certain small employers
File Form 944 to report social security and Medicare taxes and withheld income tax for 2017. This due date applies only if you deposited the tax for the year timely, properly, and in full.

February 10 — Farm employers
File Form 943 to report social security and Medicare taxes and withheld income tax for 2017. This due date applies only if you deposited the tax for the year timely, properly, and in full.

February 10 — Federal unemployment tax
File Form 940 for 2017. This due date applies only if you deposited the tax for the year timely, properly, and in full.

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

February 15 — All businesses
Give annual information statements to recipients of certain payments you made during 2017 Details

February 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in January.

February 15 — All employers
Begin withholding income tax from the pay of any employee who claimed exemption from withholding in 2017, but did not give you Form W4 to continue the exemption this year.

February 15 — Individuals
If you claimed exemption from income tax withholding last year on the Form W-4, you must file a new Form W-04 by this date to continue your exemption for another year Details

February 19 — Everyone
Federal Holiday (Washington's Birthday) Details

February 28 — All businesses
File information returns (for example, Forms 1099) for certain payments you made during 2017.

February 28 — Payers of gambling winnings.
File Form 1096 along with Copy A of all the Forms W2G you issued for 2017. If you file Forms W2G electronically, your due date for filing them with the IRS will be extended to 03-31. The due date for giving the recipient these forms remains 01-31.

February 28 — All employers
File Form W3, Transmittal of Wage and Tax Statements, along with Copy A of all the Forms W2 you issued for 2017. If you file Forms W2 electronically, your due date for filing them with the SSA will be extended to 03-31. The due date for giving the recipient these forms remains 01-31.

February 28 — Large food and beverage establishment employers
File Form 8027, Employer's Annual Information Return of Tip Income and Allocated Tips. Use Form 8027T, Transmittal of Employer's Annual Information Return of Tip Income and Allocated Tips, to summarize and transmit Forms 8027 if you have more than one establishment. If you file Forms 8027 electronically, your due date for filing them with the IRS will be extended to 03-31.

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