Earning cash back by shopping through various shopping portals is a money-saving trick many people swear by. But finding the portal with the highest return is not always easy. Here’s a tool that lets you quickly compare cashback rates across portals with just one click!

Cashback Monitor

Link: https://www.cashbackmonitor.com/. Once you open the site, you can search for the store where you want to shop.
Too much hassle? There’s actually an easier way. Save their bookmarklet to your browser’s bookmarks bar (instructions here). Then, when you are shopping, you can simply click the bookmarklet in your bookmarks bar and it will automatically search Cashback Monitor for the highest cashback rate available for that site.
Its interface looks like this:

shopping-portal

You can also sign in on their site with your Google/Facebook/Twitter account and assign your own value to each type of point. Then they will automatically sort the results by value, so Hilton points won’t always show up at the top.

shopping-portal-2

Other Similar Websites

There are a few other sites that offer the same functionality, but I don’t think they’re as good as Cashback Monitor:
EVReward: https://evreward.com/store