Here's a foolproof guide to how much you should be tipping during the holiday season

• The holidays are often a time to tip workers you regularly interact with.
• Americans plan to tip more generously this holiday season than last, a recent Bankrate survey found.
• Here's what etiquette experts suggest you tip workers like doormen, gardeners, nannies, and babysitters.

For many Americans, the holidays are often a time to think about giving back to all the service workers who've routinely helped you throughout the year — with a hefty tip.

Maybe it's the babysitter who takes care of your kids on a busy night, or the building superintendent who lets you into your apartment when you forget your keys.