SOURCE: IRS Tax Tip 2015-48
Nobody’s perfect. Mistakes happen. But if you make a mistake on your tax return, it will likely take the IRS longer to process it. That could delay your refund.
1. Wrong or missing Social Security numbers. Be sure you enter all SSNs on your tax return exactly as they are on the Social Security cards.
2. Wrong names. Be sure you spell the names of everyone on your tax return exactly as they are on their Social Security cards.
3. Filing status errors. Some people use the wrong filing status, such as Head of Household instead of Single. The Interactive Tax Assistant on IRS.gov can help you choose the right status. If you e-file, the tax software helps you choose.
4. Wrong bank account numbers. You should choose to get your refund by direct deposit. Be sure to use the right routing and account numbers on your return. The fastest and safest way to get your tax refund is to combine e-file with direct deposit.
5. Forms not signed. An unsigned tax return is like an unsigned check – it’s not valid. Both spouses must sign a joint return.
6. Electronic filing PIN errors. When you e-file, you sign your return electronically with a Personal Identification Number. If you know last year’s e-file PIN, you can use that. If you don’t know it, enter the Adjusted Gross Income from the 2013 tax return that you originally filed with the IRS. Do not use the AGI amount from an amended return or a return that the IRS corrected.