Solange Knowles isn't ''too worried'' after being issued a $55,000 tax lien.

The 'Losing You' hitmaker, who married Alan Ferguson in a lavish ceremony in New Orleans, Louisiana last month, has been accused of failing to pay her taxes between 2010 and 2012, but isn't upset about the situation.

A source close to the 28-year-old star told E! News: ''Solange wasn't too worried. She's on top of stuff and has always been financially responsible.''

The singer, who is the younger sister of Beyoncé Knowles, insists her outstanding Californian tax bill is merely a misunderstanding, as she lives in New Orleans, and is already in the process of being cleared up.

Her spokesperson said: ''The lien is in process of being removed as there was simply confusion on whether Solange was a California resident. We expect this to come to a swift close.''

The lien was filed just three days her recent wedding.

Solange previously brushed off rumours of financial trouble when she denied Beyoncé, 33, had paid for her and Alan's honeymoon.

Her representatives said at the time: ''Reports that Beyoncé paid for Solange's honeymoon with Alan Ferguson are false. There is no truth to this. Solange and Alan paid for their honeymoon themselves. They did not receive any compensation of any kind.''