Different Phase-Out Rate Although the income levels at which third stimulus checks start to be phased out (i.e., reduced) are the same as the amounts used for the first two stimulus payments, the rate at which the phase-out occurs is different. As a result, you might not get a third stimulus check even if you received payments in one or both of the first two rounds. More Money for Certain Families One big change with third stimulus checks is that an extra $1,400 is tacked on to your payment for any dependent in the family. For the first- and second-round payments, the additional amount allowed – $500 for first-round payments and $600 in the second round – was only given for dependent children age 16 or younger. As a result, families with older children, including