Kelis Ain't Payin' Her Taxes Either!

Kelis apparently took away one very important life lesson from her ex-hubby Nas ... mainly how NOT to pay her taxes ... to the tune of $300,000.

According to a tax lien filed in NYC, the government wants Kelis to fork up over $330,426.71 in unpaid taxes for the years 2004 and 2010.

Now, what's interesting about this little diddy is that She owes for 2004, but she married Nas' money in 2005, and then she owes for the year 2010, but she divorced Nas' money in 2009...

In April of 2010, Nas had to pay her a lump sum payment of $350,000 in alimony and child support... that would have taken care of your entire tax bill, sweetie!

Not to mention the fact that this broad was originally awarded $40,000 per month in support and that amount wasn't reduced to $25,000 until 2012... girl, bye!

Ask for a room with Lauryn Hill, so you can have somebody to watch your back while you're in the bathroom.