Taxpayers who requested an extension of time to file their federal tax returns have until Oct.16 to double-check their returns for tax benefits that people often overlook. These taxpayers still have time to see if they can benefit from these four credits.

Many people don’t understand the terms “exemption” and “deduction,” especially those without much experience doing their own taxes. However, exemptions and deductions can save you thousands on your taxes, and here’s what you should know about them for 2016.

10 biggest income tax changes to plan for in 2016