Thanks for a case study with specific amounts. But my question is independent of this but still provide the following amounts of my case.

Tax Year 2019

Single 

W-2 $12,000

Bank Int $50

S/T Cap Loss $2,000

L/T Cap Loss $6,000

Total Cap Loss $8,000

So the point is without $3,000 cap loss allowed by the IRS, the person is non taxable and wants to carry forward to 2020 the entire cap loss of $8,000