The new 15 per cent research and development (R&D) tax credit for businesses took on April 1 2008. The tax credit will give eligible businesses back 15 cents in every dollar they spend on R&D that meets specific criteria. For more information about the tax credit, customers are invited to call Inland Revenue or go to Research and development (R&D) tax credit. http://www.ird.govt.nz/rd-tax-credit/