"**Yield to Maturity (YTM)**" represents the **average annual return** an investor can expect to receive if they hold a **debt security**, like a **bond**, until it **matures**. This calculation takes into account the bond's **current market price**, its **par value**, the **coupon interest rate**, and the **time remaining until maturity**. Essentially, YTM is the **internal rate of return (IRR)** of a bond investment. **Keywords:** Yield to Maturity, YTM, Debt Securities, Bonds, Interest Rate, Current Market Price, Maturity, Investment, Annual Return, Par Value, Coupon Rate.