The day you’ve been dreading is approaching: Tax Day. To prepare for that ominous deadline — or see what you can do better next year — start organizing your finances and look for every single tax deduction so you can write off anything you qualify for.

Whether you’re a rookie or a veteran tax filer, there’s a chance you’re missing out on some deductions. Maximize your tax return by learning about 15 little-known tax deductions and credits you’ve probably overlooked.