Were to enter items purchased for clients?

[fishy1841]

As an IT / Computer Tech , I purchased computers , monitors , equipment  etc . for my clients jobs and I did not make any profit on them , but they were not deducted from 1099-K .

Were can I deduct them on turbo tax ?

[PatriciaV]

Report these items as expenses for your business so the cost offsets the income reported on Form 1099-K. You can use whatever expense category makes sense to you (materials, supplies, miscellaneous), as long as you are consistent.