What Are Premium Bonds? Overview, Benefits & Yield

Why bonds trade at a premium

On the secondary market, bond prices are normally inversely related to interest rates. If interest rates are going down, then new bonds are going to pay less than old bonds, making those old bonds more valuable. All else being equal, every investor would choose a bond with a 5% annual interest rate over one with a 4% rate.

This is the most common reason for bonds to trade at a premium. They pay higher interest rates than what’s currently available, so investors are willing to pay more for those premium bonds than the face value. Even with the added cost, they’ll earn more interest over the life of the bond.

With corporate bonds, prices can also rise if the issuing company’s credit rating improves. Credit rating agencies grade bonds based on the likelihood of the issuer defaulting on its loans. Corporate bonds from companies with high credit ratings can command a premium because they offer greater security.

Investing in premium bonds

Premium bonds have a few pros and cons as an investment. They usually have higher interest rates than what’s currently available, so if you want to generate more passive income, they can be a sound choice. If a corporate bond is trading at a premium, it normally means that the issuing company has a good credit rating and is unlikely to default.

Since you’re paying more than face value for a premium bond, you need to make sure that the higher rate is worth the premium. Compare how much interest you’d earn from a new bond at the currently available rates with how much you’d earn from a premium bond. If the cost of the premium is close to what you’d earn in interest, you may want to play it safe with a new bond at face value.

There’s also the risk that interest rates increase after you buy a premium bond, in which case new bonds may be available at face value with the same rate that cost you a bond premium. This is more of a risk with premium bonds that still have a long amount of time left until their maturity dates, since it’s difficult to predict what interest rates will be like years in the future.

Premium bond example

Bonds are bought and sold at premiums all the time. Imagine you purchased Treasury bonds (T-bonds) with a rate of 5%. Interest rates then dropped, and new T-bonds were paying 4.5%. You would likely be able to sell the T-bonds you purchased at a premium.

Whether that’s the right decision depends on how much money you stand to make from your premium bond if you hold onto it and your current cash flow needs. The same is true when buying premium bonds. Either way, it’s ultimately a decision between the cost of a premium and the value of a high interest rate.