If my boyfriend as unclaimed money from using our child as a Dependent last year can I use our child as a Dependent this year? Or will it infect my refund?

The dependent can be claimed by different people in different years ....

If you are unmarried but live together with the child, either one of you can claim the child (or children) as dependents. If the parent who claims the child as a dependent also pays more than half the expenses of keeping up their home, they can file as head of household instead of single, which is slightly more favorable.  The other parent should not even list them in Turbotax, because there are some poorly worded questions that confuse some people.

Who can I claim as my dependent?

You can claim a child, relative, friend, or fiance (etc.) as a dependent on your 2018 taxes as long as they meet the following requirements:

Qualifying child

·         They are related to you.

·         They aren't claimed as a dependent by someone else.

·         They are a U.S. citizen, resident alien, national, or a Canadian or Mexican resident.

·         They aren’t filing a joint return with their spouse.

·         They are under the age of 19 (or 24 for full-time students).

o    No age limit for permanently and totally disabled children.

·         They live with you for more than half the year (exceptions apply).

·         They didn't provide more than half of their own support for the year.

Qualifying relative

·         They don't have to be related to you (despite the name).

·         They aren't claimed as a dependent by someone else.

·         They are a U.S. citizen, resident alien, national, or a Canadian or Mexican resident.

·         They aren’t filing a joint return with their spouse.

·         They lived with you the entire year.

·         They made less than $4,150 in 2018.

·         You provided more than half of their financial support.

When you add someone as a dependent, we'll ask a series of questions to make sure you can claim them.

·         Does a dependent have to live with me?

·         What does "financially support another person" mean?

·         Can I claim myself or my spouse as a dependent?

·         Can I claim my parent as a dependent?

·         Can I claim a newborn baby?