Tax policy implications for a two‐engine growing economy

In an endogenous growth model with two engines of R&D and capital, we investigate the environment of “inclusive growth” for tax reallocations (tax increases or tax credits) to gain broader benefits in terms of promoting the overall GDP growth without an increase in income inequality. Our results show that a tax increase in the capital‐good sector can result in inclusive growth, boosting overall growth and reducing income inequality, provided that the status quo tax rate is not too high. Surprisingly, tax credits are not able to achieve such inclusive growth. While the GDP growth rises, a tax credit in the R&D sector not only increases income inequality but also decreases the aggregate employment, if the labor mobility cost between the final‐good and R&D/capital‐good sectors is relatively low. This provides a caution to policymakers given the fact that research tax credits have served as a common incentive to strengthen the R&D environment.