Clean Price Vs Dirty Price Of Bonds: Know The Key Differences & The Role Of Accrued Interest For Investor

At first glance, bond investing appears simple, terms like face value, coupon rate and credit rating are some commonly heard ones. However, the way bond pricing works is quite different from equities, and some terminologies can seem complex. In fact, a single bond can have two prices simultaneously, where each serves a different purpose. Clean price and dirty price are two such concepts.

Clean price vs dirty price of bonds is something that confuses a lot of investors. After all, these prices separate the bond’s market value from the interest that has already been earned.

Read through to understand why bond prices are quoted differently, the meaning of clean price and dirty price, and how accrued interest bonds affect what you actually pay.

But before we dive into what these two are, let's first give you a quick refresher on what accrued interest is.

What Is Accrued Interest Of A Bond?

Suppose you invested in a bond with a face value of Rs 1,000 , tenure of 2 years, and a coupon rate of 10% per annum.

Let’s say you are getting this interest payment, which comes out to be Rs 8.33, on the 1st of every month.

(show is formula on screen:  (Face value x Annual Interest Rate)/12

=(Rs 1,000 x 10%)/12

=Rs 8.33)

Now, its been 6 months and you decide to sell this bond on the 16th.

Yes you would have got the previous month’s coupon payment on the 1st of the current month, right? 

But what about the interest you earned from the 1st of this month till you sold the bond on 16th?

Will that interest be lost?

No, that interest you would have earned from 1st to 16th is the accrued interest. This is the interest you have earned but not received yet. 

What Is the Dirty Price Of A Bond?

Now, when you sell this bond on the 16th, the buyer will pay this accrued interest to you, at a settlement price.

In the same example that we took earlier, let’s quickly calculate the accrued interest first.

For the 15 day period during which you held that bond (between 1st and 16th), you will get the accrued interest of Rs 4.16, as calculated here.

Monthly coupon payment x  Days held/30

=Rs 8.33 x 15/30

=Rs 4.16

So on one hand the buyer pays you the accrued interest as compensation for holding that bond for those 15 days. 

And on the other hand, the buyer himself will receive the full ?8.33 coupon payment on the 1st of next month.

Now lets come to the settlement price. 

Settlement price, also called the ‘Dirty price’, is the price at which the buyer buys that bond from you, after including the accrued interest and market price. 
Dirty price= Market price of the bond + accrued interest

So, for example, if the market price of the bond you sold on the 16th, was Rs 985, the dirty price which the buyer pays you, comes out to be Rs 989.16 (Rs 985+ 4.16).

What Is The Clean Price Of A Bond?

Now if this accrued interest is removed from this equation, we get the ‘clean price’,  which reflects the true market price of that bond which the buyer is buying from you. In this case Rs 985 is the clean price.

In short, you, as the bond’s seller, get the dirty or settlement price which the buyer pays you, including the accrued interest. 

And since the buyer ultimately gets the full coupon payment on the next date, its the clean price which he pays for buying the bond.

Clean Price Vs Dirty Price: Key Differences

The table below discusses the key differences between the clean price and the dirty price based on certain parameters.

So after all calculations, we can infer that the prices differ due to the interest that accrues daily between coupons. Here, the clean price is helping to compare bond values, while the dirty price determines the actual payment. This impacts the investor's cash flow and return calculations.

How This Applies To Modern Bond Investing

Modern bond investing is limited to institutions, where retail participation has increased due to digital access and better price visibility.  Understanding clean and dirty prices helps investors interpret bond quotations correctly.

Digital bond platforms are improving price transparency

Clean price and accrued interest are now separate on modern platforms. Due to this, transparency has improved, and confusion has reduced during settlements. This allows investors to see what the bond is worth and what they are paying for interest already earned.

Bond pricings are further simplified by investor-first platforms such as Grip Invest that provide a clean price upfront, also disclosing accrued interest separately. This allows you to focus on risk and returns instead of complex calculations.

Conclusion

Initially, bond pricing may seem complex, but it is based on a clear and logical structure. The bond’s true market value is shown by the clean price, while the actual amount paid by you is the dirty price. These prices are designed to ensure fairness in interest ownership and transparency in transactions.

Understanding the clean price vs dirty price of bonds helps investors calculate returns accurately and avoid any surprises during settlements.  It will also allow you to compare bonds and government bonds in India correctly, regardless of the duration of investment.

Platforms like Grip Invest simplify bond investing with their clear display of prices and interest components. This will empower you to invest confidently and make informed fixed income decisions aligned with your financial goals.

To have a transparent and secure bond investment experience, invest with Grip today!

FAQs

Want to stay at the top of your finances? 

Join the community of 22 lakh+ investors and learn more about Grip Invest, the latest financial knick-knacks, and shenanigans in the world of investing.

Happy Investing!

Disclaimer - Investments in debt securities are subject to risks. Read all the offer-related documents carefully. The investor is requested to take into consideration all the risk factors before the commencement of trading. This communication is prepared by Grip Broking Private Limited (bearing SEBI Registration No. INZ000312836 and NSE ID 90319) and/or its affiliate/ group company(ies) (together referred to as “Grip Invest”) and the contents of this disclaimer are applicable to this document and any and all written or oral communication(s) made by Grip Invest or its directors, employees, associates, representatives and agents. This communication does not constitute advice relating to investing or otherwise dealing in securities and is not an offer or solicitation for the purchase or sale of any securities. Grip Invest does not guarantee or assure any return on investments and accepts no liability for the consequences of any actions taken based on the information provided. For more details, please visit https://www.gripinvest.in/. 
Registered Address - 106, II F, New Asiatic Building, H Block, Connaught Place, New Delhi 110001.