My ex wife and I both receive SSDI benefits.
We have one dependent child under the age of 18.
Should we be receiving SSDI benefits based on both my and my ex wife's combined benefit amount.

Hi,

You and your ex-wife can each draw the SSDI rate that you are due based on your own earnings, and the most that your child could be paid is 50% of the higher of a) your full SSDI rate, or b) your ex-wife's full SSDI rate.

Best, Jerry