In practice
PIK terms usually appear in mezzanine, holdco and some unitranche debt, and sometimes as a PIK toggle that lets the borrower choose cash or PIK each period. The accrued interest compounds, and is typically repaid with principal at maturity or on a refinancing or sale. Lenders often charge a higher rate for PIK. It is also called capitalized interest.
An example
Round numbers, not a real fundSay a company owes $100 million with 10% PIK interest. After a year it owes $110 million, having paid no cash interest.
Why it matters
It eases a borrower’s cash pinch today, and its growing balance is a worry for lenders later.
A definition, not advice; where usage varies the entry says so. Something wrong? Tell the desk.