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How to Calculate the Maturity Value of Notes | The Motley Fool

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  Published in Humor and Quirks on Saturday, October 4th 2025 at 23:34 GMT by The Motley Fool
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I will fetch the page.The Maturity Value of Notes – What You Need to Know

When you invest in a note—whether it’s a U.S. Treasury note, a corporate bond‑note, or a municipal note—one of the first things you’ll want to calculate is its maturity value. The maturity value is the amount you’ll receive when the note reaches the end of its term, and it’s comprised of the face (or principal) amount plus any interest that has accrued over the life of the note. Understanding how to calculate this figure is essential for comparing investment opportunities, determining yields, and planning your portfolio strategy.

1. What is a Note?

A note is a type of debt instrument issued by governments, corporations, or municipalities that pays a fixed or variable interest rate over a set period of time. Unlike a stock, a note obligates the issuer to repay the principal at maturity, along with periodic interest payments. Notes are typically shorter‑term than bonds (usually two to ten years) and are often used by investors looking for a balance between safety and return.

2. The Basics of Maturity Value

At its simplest, the maturity value (sometimes called the face value plus interest) can be expressed with the following equation:

Maturity Value = Principal + Interest Earned

The challenge lies in accurately determining the “Interest Earned” portion, which depends on whether the note pays simple interest, compound interest, or uses an amortization schedule.

3. Simple vs. Compound Interest

Simple Interest

Most short‑term notes use simple interest, which is calculated only on the original principal:

Interest = Principal × Annual Rate × Time

Example:
You buy a $1,000 note with a 5% annual interest rate that matures in two years.
Interest = $1,000 × 0.05 × 2 = $100.
Maturity Value = $1,000 + $100 = $1,100.

Compound Interest

Some notes compound interest on a regular basis—quarterly, semi‑annually, or annually. The formula becomes:

Maturity Value = Principal × (1 + r/n)^(n × t)

Where r is the annual rate, n is the number of compounding periods per year, and t is the term in years.

Example:
A $1,000 note with a 5% annual rate compounding semi‑annually over two years:
Maturity Value = $1,000 × (1 + 0.05/2)^(2 × 2) = $1,104.16.

4. Accounting for Payment Frequency

If a note pays interest on a schedule (e.g., semi‑annually), you must add each coupon payment to the principal:

Maturity Value = Principal + Sum of Coupon Payments

Each coupon payment is:

Coupon = Principal × Annual Rate / Number of Payments per Year

Add all coupons to the principal to get the maturity value. This method is especially relevant for corporate and municipal notes that pay periodic interest.

5. Discounted Notes

Certain notes—most commonly Treasury discount notes—are sold at a price lower than their face value. The difference between the purchase price and the face value represents the implied interest earned. The maturity value in this case is simply the face value, but the yield to the investor is higher because the principal was purchased at a discount.

Yield = (Face Value – Purchase Price) / Purchase Price

6. Accrued Interest

When you buy or sell a note between coupon payment dates, you must account for accrued interest. Accrued interest is the interest that has accumulated on the note but has not yet been paid. The standard calculation is:

Accrued Interest = (Annual Interest × Days Since Last Payment) / Days in Year

You add this accrued interest to the quoted price to determine the full price (price plus accrued interest) you’ll actually pay.

7. Putting It All Together: A Step‑by‑Step Example

Let’s walk through a realistic scenario:

• Principal (Face Value): $5,000
• Annual Coupon Rate: 4%
• Payment Frequency: Semi‑annual
• Term to Maturity: 3 years
• Days Since Last Coupon: 60 (assuming 360‑day year)

Step 1 – Calculate each coupon:
Coupon = $5,000 × 0.04 ÷ 2 = $100

Step 2 – Determine the number of coupons:
3 years × 2 = 6 coupons

Step 3 – Compute accrued interest:
Accrued Interest = (4% × $5,000 × 60) ÷ 360 = $33.33

Step 4 – Add coupons and accrued interest to principal:
Maturity Value = $5,000 + (6 × $100) + $33.33 = $5,633.33

If you purchased the note at a discount—for example, for $4,800—the yield would be higher, and you’d still receive the same maturity value ($5,633.33) when the note matures.

8. Why Knowing the Maturity Value Matters

• Comparing Yields: The maturity value is the base figure for calculating the yield to maturity (YTM), a key metric for assessing the true return of a note.
• Portfolio Planning: Knowing exactly how much you’ll receive at maturity helps you plan cash flows, especially when reinvesting proceeds or matching future liabilities.
• Valuation of Market Quotes: When a note trades on the secondary market, its quoted price often excludes accrued interest. Adding accrued interest gives you the dirty price (full price) and helps you determine if the trade is attractive relative to its maturity value.

9. Quick Reference Formula Sheet

10. Further Reading

If you’d like to deepen your understanding, the Motley Fool offers companion articles such as: - “How to Calculate Yield to Maturity on a Note” – a step‑by‑step guide to determining the true return. - “How to Calculate Accrued Interest on a Note” – a deeper dive into the mechanics of accrued interest.

These resources build on the maturity‑value framework presented here, helping you move from basic calculations to advanced portfolio analysis.

In Short

The maturity value of a note is a straightforward yet essential figure: the sum of the principal and the total interest earned over the life of the debt. Whether you’re dealing with simple or compound interest, periodic coupons, or discounted issuances, the core principle remains the same. Mastering this calculation equips you with the tools to evaluate yields, compare investment options, and confidently navigate the world of debt securities.