Small Business Jobs Act This bill provides tax incentives for investment in small businesses. Among other provisions, the bill increases from $600 to $5,000 (adjusted annually for inflation) the general reporting threshold for services performed by an independent contractor or subcontractor, restores reporting requirements for third party network transactions, modifies the exclusion of gain from the sale of qualified small business stock, increases the ceiling for expensing of depreciable business assets, establishes rural opportunity zones, and reinstates reporting requirements for qualified opportunity zones and applies such requirements to qualified rural opportunity zones.