"I would love to tell you that it had any sort of rhyme or reason from state to state or that it made any kind of sense," Hobart says.

Even if you manage to escape all those taxes, your inherited real estate and property can be a tax waiting to happen. Bergman notes that when those items are finally sold, they're subject to long-term capital gains treatment even if you've had them for less than a year. On the federal level that amounts to 15% of the difference between the selling price and the new cost basis

2. Check for qualified money
All of the taxes above apply solely to the cash, real estate and other property that's considered nonqualified money. If the person who passed away had any tax-deferred accounts or funds and named you as a beneficiary, the IRS is going to want a moment of your time.

"With qualified money -- money from 401(k)s, IRAs, 403(b)s -- it's money that's never been taxed before and, because of that, people inheriting that type of money need to be very careful," Hobart says. "If they do inherit that as a lump sum and cash that out by putting it all into a bank account, that is fully taxable as ordinary income. It doesn't matter if it's $1 or $20 million, it's a taxable asset."

Much like withdrawing from your own 401(k) or IRA early, taking money out of similar accounts left by mom or dad has consequences. While spouses are immune to such levies in certain cases, a descendant making $40,000 a year and hanging out in the 25% tax bracket can get bumped up to the 35% top tier in a hurry if they withdraw $1 million from the folks' IRA. A much lesser sum, however, may cost more to keep in the account than it will on the forms come tax time.

"If it's a small dollar amount, it probably makes more sense to take it as a lump sum to reduce the administrative burden," Bergman says. "You're still going to have to pay income tax on it during the tax year."

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