The tax season is going to get off to a late start this year. The IRS has announced that, because of the government shutdown last year, it is delaying its start time for processing 2013 individual tax returns to January 31, 2013. This is 10 days later than normal. This applies to individuals who are employees, sole proprietors who file Schedule C, and landlords who file Schedule E. The IRS says it needs the extra time to program and test its tax processing systems.

There is no point in sending in a paper return before January 31. The IRS simply won’t look at it before then. Many tax software companies are expected to begin accepting tax returns in January and hold them until the IRS systems open on January, 31.

On the other hand, the IRS will start accepting business returns starting January 13, 2014. Business returns include Form 1120 filed by corporations, Form 1120S, filed by S corporations, Form 1065 filed by partnerships and Form 1041, the return filed by estates and trusts. It also includes various excise and payroll tax returns, such as Form 720, Form 940, Form 941 and Form 2290.

There is no great advantage to filing your taxes early unless you expect to receive a refund. In this event, the earlier the better. If you file early, you could get your refund in about 21 days. Wait until April 15, when the IRS is busier, and you might have to wait up to 31 days.

Another important January tax deadline to keep in mind is January 15, 2014. That’s the day the fourth installment of estimated tax payments for 2013 are due. The January 15 payment is supposed to cover the last quarter of 2013.

However, if you’ve already paid enough estimated tax for 2013, you might be abele to skip the January 15 payment, or greatly reduce it. How much is enough? Enough so that the IRS won’t impose any estimated tax underpayment penalties on you.

No matter what your income for the 2013 was, you won’t have to pay any penalties if you paid at least the smaller of:
· 90% of your total tax due for 2013, or
· 100% of the tax you paid in 2012 or 110% if you’re a high-income taxpayer (those with adjusted gross incomes of more than $150,000 or $75,000 for married couples filing separate returns).

So, if you’ve already paid as much as your total tax for 2012 (110% as much if you’re a high-income taxpayer), you can forget the January 15 payment.

On other other hand, if you’ve underpaid your estimated taxes throughout the year, you can’t avoid IRS penalties by making an especially large January 15 payment. This is because the penalty is figured separately for each quarterly payment period. For example, you can’t avoid a penalty by doubling your January 15 payment to make up for failing to make your April September 15 payment.

If you have underpaid, you can determine the amount of the underpayment penalty by completing IRS Form 2210, Underpayment of Estimated Tax by Individuals, and pay the penalty when you send in your return. Tax preparation software can do this for you. However, it is not necessary for you to compute the penalty you owe. You can leave it to the IRS to determine the penalty and send you a bill. If you receive a bill, you may wish to complete Form 2210 anyway to make sure you aren’t overcharged.

Fortunately, the estimated tax underpayment penalty is not very onerous. You have to pay the taxes due plus a percentage penalty for each day your estimated tax payments were unpaid. The percentage is set by the IRS each year. Currently, it’s about 3%. This is the mildest of all IRS interest penalties.