Comparing your W-2(s) from this year and last year might highlight a change that could have affected your refund(s). Double check your data entry to make sure everything has been entered correctly in TurboTax, especially the wages boxes from your W-2(s).
There are many reasons that you could end up owing this year when you received refunds in the past. Some of the most common reasons include:
- Not enough taxes withheld from your pay - Did you make a change on your W-4?
- You had income from Self-Employment
- You deferred less income into your Employer-Sponsored Retirement Plan or Flexible Savings Plan
- You qualified for a Tax Credit or Deduction in previous years that you didn't qualify for this year
- You changed your Filing Status
- You deleted a Dependent or a Dependent turned 17 during the year
- If you Itemize, your Itemized Deductions were higher last year
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