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

August 1 — Form 720 taxes
File Form 720 for the second quarter of 2016.

August 1 — Wagering tax
File Form 730 and pay the tax on wagers accepted during June.

August 1 — Social security, Medicare, and withheld income tax
File Form 941 for the second quarter of 2016. Deposit or pay any undeposited tax under the accuracy of deposit rules.

August 1 — Certain small employers
Deposit any undeposited tax if your tax liability is $2,500 or more for 2016 but less than $2,500 for the second quarter.

August 1 — Federal unemployment tax
Deposit the tax owed through June if more than $500.

August 1 — All employers
If you maintain an employee benefit plan, such as a pension, profitsharing, or stock bonus plan, file Form 5500 or 5500EZ for calendar year 2015. If you use a fiscal year as your plan year, file the form by the last day of the seventh month after the plan year ends.

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

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

August 10 — Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 15 days of July.

August 12 — Regular method taxes
Deposit the tax for the last 16 days of July.

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

August 15 — Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in July.

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

August 29 — Regular method taxes
Deposit the tax for the first 15 days of August.

August 31 — Wagering tax
File Form 730 and pay the tax on wagers accepted during July.

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