My son received $680 a month in SSI payments. Do I have to declare this as income? Also is child support considered income. Thank you

[LindaA]

No, you do not need to include your son's income (whether SSI or Social Security benefits) on your tax return. Also, child support is not considered taxable income.

Note that Supplemental Security Income (SSI) is different from Social Security benefits. Because of the similar names they are often confused. The FAQs below provide more information. 

Do I need to report my dependent's SSA-1099 on my return?  https://ttlc.intuit.com/replies/4767362

Do I need to report my Supplemental Security Income (SSI)? https://ttlc.intuit.com/replies/4767309

Do I need to include child support on my federal taxes? https://ttlc.intuit.com/replies/3300055