Maryland tax systems back online after system upgrade; half of returns processed after pause

The Maryland comptroller’s office said Monday that it has processed about half of the roughly 530,000 state returns received this year, following delays due to a tax system upgrade at the start of the season. State returns have been taking slightly longer — up to 10 business days — to process following the upgrade period that held up the office’s systems for roughly the first two weeks of the tax season, which opened Jan. 29.