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Beware These 10 Common Tax Filing Mistakes
by Lisa A. Winton, MBA, MST, AICPA
Technical Manager—Taxation, Washington,
DC
The AICPA has identified 10
common, avoidable errors made on Federal tax returns that can affect tax
liability, delay return processing and, perhaps, draw the IRS’s attention:
1. Leaving off attachments: All required schedules and forms should
be attached to Form 1040, using the “Attachment Sequence Number” shown in the
upper-right-hand corner of each schedule or form. Other statements and
schedules can be attached at the end of the return, even if they relate to
another form or schedule. The taxpayer’s name and Social Security number should
be included on every page of each form submitted.
2. Forgetting prior-year carryforwards: Prior-year returns should be checked
for any items (e.g., capital losses or charitable deductions) that exceeded the
deductible amount and need to be carried forward to the current year.
3. Reporting investment income
incorrectly: Earnings from money market funds are dividends, even
though they are often mistakenly reported as interest income.
4. Overpaying Social Security taxes: Taxpayers who worked two or more jobs in 2006 and whose total earnings exceeded
$94,200 may have overpaid Social Security taxes. The instructions accompanying
Form 1040 explain how to claim a credit.
5. Unnecessarily declaring a state
tax refund as income: State tax refunds should not be declared as
income on Federal tax returns if the taxpayer did not receive a tax benefit
from deducting state taxes. Taxpayers who took the standard deduction in 2005
do not have to include a state tax refund in income for 2006. Taxpayers who
were subject to the alternative minimum tax (AMT) in the year the state income
taxes were deducted may not have obtained the full benefit of the regular tax
deduction for state income taxes; see IRS Pub. 525, Taxable and Nontaxable Income.
6. Failing to document donations: Written acknowledgment from the charity
is required to deduct monetary donations of $250 or more. If the gift was
property valued at less than $500, the written acknowledgement must describe
the property; the taxpayer must file Form 8283, Noncash
Charitable Contributions, for property contributions valued at more than $500.
Donations of used clothing and household items after Aug. 17, 2006, must be in
“good” or better condition. For 2007, taxpayers have to keep records of all
donations by cash or check, showing the details of the contribution. Given that
many banks do not return cancelled checks, taxpayers will have to be diligent
in getting a detailed acknowledgment from the donee,
even if the contribution is under $250.
7. Not properly tracking investment
basis: Basis is the original value of an investment. For example, if a
taxpayer owns mutual fund shares, each year the fund reports the dividends and
capital gains earned, which are taxable in the year reported. When the taxpayer
sells the shares, the gain is the difference between the sale proceeds and the
taxpayer’s basis (amount realized less adjusted initial investment). Basis
increases once any financial gains the taxpayer has reinvested are taxed. If
taxable gains (i.e., the dividends and capital gains reported) are reinvested,
they are added to basis to reduce gain (or increase loss) on sale.
8. Making numerical errors: All
calculations should be reviewed for accuracy. Because some calculations affect
other figures, mistakes can cascade; thus, all affected computations should be
reviewed. Also, entered Social Security numbers and Form W-2 information should
be double-checked.
9. Failing to calculate AMT:
As many as 16 million taxpayers are predicted to become subject to the AMT for
the first time during the next two years. Form 6251, Alternative Minimum
Tax—Individuals, should be completed, just to check if it applies. Otherwise,
the taxpayer may receive a tax bill from the Service, with underpayment
interest.
10. Assuming that itemizing
deductions is better than taking the standard deduction: Itemizing
deductions does not automatically result in the lowest Federal tax bill. For
example, a taxpayer who has paid down most of the interest on a home mortgage
might be better off taking the standard deduction. For 2006 returns, the
standard deduction for a single taxpayer is $5,150 and $10,300 for married
taxpayers filing jointly. Taxpayers should compare itemized deductions to the
standard deduction and claim whichever is larger.
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