My 6000$ capital losses is not adding up with my original refund (from my wage withholding), in fact it's not reaching 3000 even. what can be wrong?

Hi, I have a capital loss of close to 6000. My refund before accounting for this loss is 1961 federal and 509 state (NY). After entering loss, I got 2621/811 only. Shouldn't I get 3000+1961 and carry over 3000 to next year? I can't seem to get help from turbo tax even though I have premier