Every way the new $1,400 stimulus check compares to the $600, $1,200 payments

President Joe Biden signed the $1.9 trillion relief bill into law Thursday, making the third stimulus checks official. The IRS and Treasury will start sending the $1,400 payments out to eligible individuals and families starting this weekend via direct deposit -- here's how to track your payment if you qualify.

This is the third set of coronavirus relief checks issued by the federal government since the start of the pandemic. And while each check has had different rules, the new check is especially different this time. For instance, the new payment is more than twice as much as the second check per person and also brings eligible families more money in other ways. However, it also adds the strictest income limits yet, resulting in fewer people qualifying for a check (here's who is qualified).

Below, we compare the first $1,200, second $600 payments and the third check of $1,400, which includes a massive change to the definition of dependents. This story has been updated with new information. 

Watch this: Stimulus check 3: How much money you'll get

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All the differences between the three stimulus checks and how they affect you

Each round of stimulus payments has varied on the maximum amount per person and how many people qualify to receive the check. The second check was the least generous on both counts, and took 9 months to become law. However, it also made some groups of people eligible who weren't before, while sticking with the status quo on other provisions that more-progressive lawmakers wanted to revise. 

The new check changes the game again, becoming more generous in some spheres, as with dependents and families with mixed-status citizenship, while also finding its way to fewer people than perhaps even the second check -- at least based on the new stimulus check formula.

Read on to see how the three checks stack up. For more information, here's what you need to know about stimulus checks today, including how to claim any missing stimulus money on your 2020 tax return, how tax season affects the third check, if you can set up direct deposit and how to track your tax refund online.