The 502LU is part of the program but you only get a refund for $10,200 worth of income, not all of it. The tax rate goes from 2% to 5.75% which means if your income is very high, the most your refund could be is $586.50 while the least it should be is $20.00 If your refund is in this range, it may be correct. Look at your MD 502LU and see that it shows the $10,200 exemption.
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Incorrect- Maryland is refunding ALL state and local unemployment taxes from 2020. People are already getting those refunds. I had very very low income last year so I should get it all.