My economics degree says the theory is that people will keep on employing new workers until the marginal return of an extra worker is equal to the marginal cost of hiring that extra worker. Marginal costs increase with more workers while marginal returns decrease. Reducing taxes (at least certain ones) should reduce the costs of all workers and the marginal cost of hiring an extra one and so that extra one would get hired where they wouldn't without the tax cut.General Zod wrote:I never understood the tax cuts = jobs thing myself. How do tax cuts make sure that the employer is going to bring in more revenue to justify hiring new employees? It really doesn't seem like the cuts are going to be enough to offset the costs of a new hire.
How well it works in practice I don't know. I'd be inclined to think not very well at all, but this would depend heavily on which taxes were cut. For example, a cut in national insurance might have an effect since that's a per-worker cost, but a cut in corporation tax wouldn't.