Because you are a small-business owner, you have a higher chance of an IRS audit. In an audit, the IRS will try to impose accuracy-related penalties on top of any unpaid taxes that it discovers. What you need to know is that the penalties are not automatic. You can beat them with one of the right arguments.

There are many reasons why you may want to donate your business vehicle to charity, not the least of which is that you’re helping a worthy cause. But if your goal is to couple that good deed with a nice tax deduction, make sure you do the math before you hand over the keys to avoid suffering an unpleasant tax surprise.

When you expand to a second or third business, you increase your chances of running afoul of the passive loss rules. That’s not a problem if all the businesses are producing a profit. But if one of the businesses is incurring losses, you won’t get an immediate tax deduction if you don’t materially participate. And if you try to hide that business inside another proprietorship so your loss offsets your other income, you and your tax preparer face even more trouble.

Your government offers a very generous subsidy, a 30 percent tax credit, if you install solar equipment at one or more of your residences. And if you live in the right area of the country, you can come out well ahead on this deal. But this is tax law, and as you would expect, there are some tricky rules that you need to follow to qualify for the credit.

You face special tax laws when you attempt to buy a rental property and that purchase attempt fails. In general, the rules work to help you with that failed purchase, but you need to know how and when the rules work for you.

Whether you sell the assets of the business or your ownership interest, you can expect the buyer to check things out before signing off on the deal. This is called due diligence. And there are various aspects of due diligence, depending on the type of sale you are making and the buyer’s needs.

If you report a tax cheat to the IRS, you may receive a portion of any money recovered following an audit. For example, the IRS paid $104 million to a citizen who revealed that his Swiss bank employer was helping clients evade U.S. taxes. If you feel it is your civic duty to report a tax cheat, the IRS would be glad to hear from you and reward you for initiating a successful investigation.