DOVER — After three weeks of warning about an impending budget deficit and over the concerns of the business community, Delaware lawmakers are looking to decouple from the federal tax code for key provisions of corporate income tax cuts.

House Bill 255 , which was filed Wednesday, would reject new federal tax deductions for businesses that were created when the One Big Beautiful Bill Act was signed into law in July.

The most significant change for corporate taxes under the OBBBA is that companies can permanently deduct their domestic research and development costs from their taxable income.

Small companies, or those that have $31 million or less in gross receipts, are also allowed to retroactively claim those expenses between tax years 2022 and 2024.

Under HB 255, companies would rev

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