And experts are revealing the scoop on the best savings.
There's Black Friday, then Cyber Monday but today is another sort-of made up shopping day - Green Monday.
The term was coined when retailers noticed an uptick in shopping on the second Monday in December.
It's now the third largest online shopping day of the year and retailers are stepping up.
Discounts include 40 percent off the entire site at Levi's, The Gap, Old Navy and Banana Republic.
At the Coach site, many items are 30 to 50 percent off.
Target is offering tons of discounts on clothing, including 30 to 50 percent off pajamas for the entire family.
Also, Amazon has 40 percent off some toys such as a combo drone/remote control car set.
And don't forget with online shopping - let technology help with the saving!
Honey is a new service you add to your browser and it will automatically scan for discounts.
And Paribus tracks prices after you purchase. Once it sees a drop in price, it automatically contacts the retailer and gets a credit for the price discount refunded back to you.
But not everyone's shopping online. Some savings can also be found in many stores.
Ted Minta, manager at Best Buy in Plymouth Meeting, says his store has been very busy.
He also says employees will often price match deals you find online and sometimes throw in an extra item to make a bundle you didn't see in cyberspace.
"You might think you're only looking for a computer, but there are some bundle deals that are out there. You can get an Xbox plus a laptop which might be another gift you can give to someone else," he said.
Also consider that this is the last full week where retailers will offer free shipping that is guaranteed to make it by Christmas.