If you're like many Americans, you've put off retirement planning for far too long, and the chickens are coming home to roost. The average 401k balance won't provide the type of income many are hoping for in their Golden Years. All too often, that leads folks to put their head in the sand and hope for the best.

But that's not our approach here at The Motley Fool. Our aim is the help the world invest better. And when it comes to retirement savings, there's good news: there lots of ways to improve your retirement savings via your 401k.

In the slideshow below, Fool analyst Brian Stoffel outlines 5 smart 401k moves you can make in 2015—starting with the most basic, and ending with a megabackdoor trick that could help you sock away tens of thousands in a tax advantaged accounts—every year.

How one Seattle couple secured a $60K Social Security bonus -- and you can too
A Seattle couple recently discovered some little-known Social Security secrets that can boost many retirees' income by as much as $60,000. They were shocked by how easy it was to actually take advantage of these loopholes. And although it may seem too good to be true, it's 100% real. In fact, one MarketWatch reporter argues that if more Americans used them, the government would have to shell out an extra $10 billion... every year! So once you learn how to take advantage of these loopholes, you could retire confidently with the peace of mind we're all after, even if you're woefully unprepared. Simply click here to receive your free copy of our new report that details how you can take advantage of these strategies.

Photos: American Advisors Group, Freemoneyday, Christian V, all via Flickr.