I adopted my special needs son in 2019, I only used 4100 of my credit. I have a carry over of 10,000. It isn't allowing me to use this roll over.

It depends.

 

I would recommend confirming the amount of the Adoption Credit Carryforwards from prior years to ensure the amounts pulling in are correct going forward.

 

You would do this in the federal interview section.

1. Select Deductions & Credits 
2. Scroll down to All Tax Breaks  
3. Select You and Your Family 
4. Click Show more and select start (or revisit) under Adoption Credit 
5. Select your child's name, and click edit. 
6. After going through all of the screens, you will see a page which says Here's your adoptive child info.
7. Click done at the bottom of that page.  This will get you to the carryforward screen. 
8. On this screen, please confirm the amounts you have from your prior year tax returns to ensure the carryforward amount for the 2019 tax year is correct.  This will ensure all returns filed from this year forward are correct.