It’s pretty much the only good thing about tax season: Your tax refund.

After you file your taxes, the government (both state and federal) will issue you a refund if you paid more in taxes than you actually owe. Last year, the average tax refund was $2,803.

According to the IRS, most refunds are received within 21 days after filing.

This year, however, added tax reviews, as well as a software glitch, has caused some refunds to be delayed.

If you don’t receive your refund within four weeks, use the IRS’s Where’s my refund? tool to track it down.

Every year, millions of dollars worth of tax refunds go unclaimed because people don't file tax returns. On April 15, $900 million in unclaimed tax refunds will become property of the U.S. government.

Remember: Tax Day 2013 -- the deadline to file your 2012 taxes -- is Monday April 15, 2013. Failure to file your taxes on time can result in a penalty and more. If you need an extension, file this form by April 15.

Also on HuffPost:

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  • Sliced Bagel Tax

    You might want to think twice about getting that schmear. In New York City, bagels that are sliced or prepared are subject to sales tax, whereas whole bagels are not, <a href="http://online.wsj.com/article/SB10001424052748704340504575448033463314628.html">according to</a> the Wall Street Journal.

  • Pet Tax

    If you live in Durham, North Carolina, you could be <a href="http://blog.turbotax.intuit.com/2011/01/03/americas-most-bizarre-taxes/">paying a tax on Rover</a>. The state charges a $10 tax for neutered and spayed pets and $75 for pets that are not neutered or spayed, according to Turbo Tax.

  • Candy Tax

    In Illinois, all <a href="http://www.marketwatch.com/story/thomson-reuters-reports-2012-quirky-tax-laws-2013-01-28">candies are subject to an extra tax</a>, unless they contain flour, like the Whopper pictured here.

  • Elderly Tax Exemption

    By the time you're 100, <a href="http://www.efile.com/unusual-strange-funny-taxes-throughout-the-world-and-history/">you've paid enough in taxes</a>, at least according to the state of New Mexico, where people over 100 years old are tax-exempt.

  • Flush Tax

    If it's yellow, let it mellow could be the motto of some Maryland and Virginia residents looking to save money. In these two states there's a <a href="http://www.bing.com/videos/watch/video/2-minute-tax-tips-weird-taxes/1zyohv7aj?from=gallery_en-us&cpkey=626b3129-89f2-5b5b-1fb7-b9a5bfa67758%257c%257c%257c%257c">tax on flushing the toilet</a>, according to Bing.

  • Crack Tax

    Tennessee <a href="http://www.npr.org/templates/story/story.php?storyId=6861075">anonymously collects a tax on illegal drugs</a>, according to NPR. In 2006, the state collected $1.5 million from the tax.

  • Diaper Tax

    Adult diapers <a href="http://www.marketwatch.com/story/thomson-reuters-reports-2012-quirky-tax-laws-2013-01-28">are exempt from sales tax in Connecticut</a>, but if you're buying diapers for your kids you'll have to pay taxes on those, according to Thomson Reuters.

  • Napkin Tax

    Colorado levies a tax on <a href="http://www.businessinsider.com/the-5-weirdest-sales-taxes-we-could-find-2012-1">"non essential" food packaging</a> items, according to Business Insider. That means you'll pay a tax on paper cup lids and napkins, but not on paper cups themselves.

  • Sex Tax

    Businesses in Utah that employ nude or partly nude workers are required to pay a <a href="http://money.usnews.com/money/personal-finance/slideshows/the-10-strangest-state-taxes/11">10 percent sales tax</a>, according to U.S. News and World Report.

  • Card Deck Tax

    If you buy cards in Alabama you'll <a href="http://turbotax.intuit.com/tax-tools/tax-tips/General-Tax-Tips/7-Crazy-Taxes-from-the-US-and-Abroad/INF12163.html">pay a 10 cent tax</a> on the deck, according to Turbo Tax. Meanwhile, Nevada gives free decks in exchange for completed returns.

  • Holiday Decorations Tax

    In Texas, holiday-themed pictures that are <a href="http://www.efile.com/unusual-strange-funny-taxes-throughout-the-world-and-history/">meant to be placed on walls</a> are taxed, according to efile.com.

  • Tattoo Tax

    In Arkansas, there's a <a href="http://blog.turbotax.intuit.com/2011/01/03/americas-most-bizarre-taxes/">6 percent sales tax on tattoos</a>, according to Turbo Tax.

  • Litigation Tax

    New York has <a href="http://abcnews.go.com/Business/strangest-taxes-50-states/story?id=16089204&page=2">a tax on litigation</a>, according to ABC News.

  • Hot Air Balloon Tax

    In Kansas, you have to pay <a href="http://abcnews.go.com/Business/strangest-taxes-50-states/story?id=16089204&page=2">taxes on that hot air balloon</a> ride -- or risk flying away. In that state tethered balloons are taxed, but those that roam free are not because they are considered a legitimate form of transportation, according to ABC.

  • Fresh Fruit Vending Machine Tax

    Another reason not to buy your fruit from a vending machine. Fresh fruit is exempt from sales tax in California, unless <a href="http://money.usnews.com/money/personal-finance/slideshows/the-10-strangest-state-taxes/5">it's sold from a vending machine</a>, according to U.S. News and World Report.