Tax credit for tax paid on deemed income enables carryforward and setoff subject to specified carryforward periods and exclusions. Tax credit equals the excess of tax paid under the deemed-income provisions over the tax otherwise payable on total income; no interest is payable on the credit. The determined credit is carried forward and set off subject to statutory time limits, with set-off permitted only in years when tax is computed under the Act other than under the deemed-income provisions and limited to the difference between tax under normal computation and tax under the deemed provision. Adjustments follow any assessment or revision orders, and specified exclusions to applicability are provided.