Does my son in law counts as my son ?

[Leo9747]

son in law

[dmac24]

Generally speaking, NO.  It might depend on how much you pay towards his support and his age.

[HelenC12]

If you mean, would your son-in-law be considered your son for income tax purposes and as a qualifying child? No, he would not be your son.

• However, he is a qualifying relative and can be claimed by you as a dependent if he meets certain requirements. Please see Who can I claim as a dependent?

Per IRS Qualifying Child Rules | Internal Revenue Service In general, to be a taxpayer's qualifying child, the relationship test must be met.  The dependent must be the taxpayer's child or stepchild (whether by blood or adoption), foster child, sibling or stepsibling, or a descendant of one of these.