Yes it is taxable. There is no limit on how much W2 or self employment income you have. Two different things. SS is taxable at any age. But if you are under full retirement age they will actually reduce your monthly SS checks if you make too much other income.
Up to 85% of Social Security becomes taxable when all your other income plus 1/2 your social security, reaches:
Married Filing Jointly: $32,000
Single or head of household: $25,000
Married Filing Separately: 0
