Can the IRS charge interest on interest?

yes

Under the late payment legislation,if you are in uk,you can. and here's the link through which you can even calculate how much interest you can...

The interest rate charged by the IRS is based on the Federal Short-Term Rate, which is set by the Federal Reserve. The interest rate changes quarterly. It is currently 6% for individuals and 8% for...

As discussed many, many times here; Charging off or Writing off a debt is a required accounting entry. It is how the one you stiffed, shows the asset it was to receive (the money you we're to pay),...

If the amount due has lapsed to the next month without any payments being made, the CC company will add additional "penalties" that may appear as added interest, but in reality the fines are added to...