Before we get into contributions, I just wanted to quickly explain what a deductible is because it can sound kind of confusing. A deductible is the out-of-pocket amount an individual must spend before their insurance company covers any costs. So if your deductible is $1,400, this means that you must spend $1,400 on a medical visit or procedure before the insurance company will chip in.
This year, if you're an individual who has a deductible of at least $1,400, you can put $3,550 into your HSA. The "maximum annual HSA contribution limit gives HSA holders a lot of room [to save more money]," said Amy O’Meara Chambers, Chief Operating Officer and co-founder of HealthBridge Financial, Inc.
You can also just save the equivalent of your deductible in your HSA and use it to pay for medical costs (so you don't feel like you're actually paying out of pocket before your insurance picks up the tab).
BTW, here's a helpful guide to learn more about HSA contribution limits.