How do i check if someone claim my kids in 2015 tax return?

[fualaauaulelei]

How to find out if someone did claim my kids last year

[Hal_Al · Accepted solution]

You can't find out, other than filing a competing tax return.

If someone else claimed your child inappropriately, and if they file first, your return will be rejected if e-filed. You would then need to file a return on paper, claiming the child as  appropriate. The IRS will process your return and send you your refund, in the normal time. Shortly (up to a year) thereafter, you'll receive a letter from the IRS, stating that your child was claimed on another return. It will tell you that if you made a mistake to file an amended return and if you didn't make a mistake to do nothing. The other party will get the same letter you did. If one of you doesn't file an amended return, unclaiming the child, the next letter, from the IRS, will require you to provide proof. Be sure to reply in a timely manner.

Winner gets the tax benefits; loser gets to pay the IRS back with penalties and interest.  The custodial parent almost always wins. The non-custodial parent can only claim the child as a dependent if the custodial parent gives permission (on form 8332) or if it's spelled out in a pre 2009 divorce decree.  

https://www.thebalance.com/claiming-same-dependent-audit-risk-3193030

[Jaime31]

I was going through my files, and my credit reports and noticed a Nicole McBee/Davis claimed my son in 2015 and my son has been in my care his whole life. The only way I can think she got his social security number is by my ex husband