📌 Nigeria · en-NG · NGX All-Share Index · 2026-09-05

Duration in Nigeria 2026

Renan Filho · Founder & Tech Builder

Quick answer: Duration is the silent killer of Nigerian bond portfolios, yet most investors ignore it until the Central Bank of Nigeria (CBN) shifts rates. Simply put, duration measures how much your bond's price drops when yields rise. For a ₦500,000 treasury bill at 20%, duration is short, but long-dated bonds can wipe out your gains overnight.

Key data for Nigeria (2026-09-05)

Why Duration Hits Harder in Nigeria's 22.75% Rate Era

The CBN has held the monetary policy rate at 22.75% through 2026 to fight inflation and defend the naira. That means yields on new bonds are juicy, but older bonds with lower coupons are losing value. If you bought a 10-year bond at 12% in 2021, its duration is roughly 7 years. A 1% rise in yields—which the CBN has done repeatedly—drops that bond's price by about 7%. On a ₦500,000 position, that's ₦35,000 gone. Treasury bills, with maturities under 1 year, have duration near zero, so they don't suffer. But mutual funds holding long bonds? They feel the pain. SEC Nigeria warns investors to match duration with their time horizon, not just chase yield.

Duration vs. Maturity: The Trap in Nigerian Fixed Income

Many Lagos investors confuse maturity with duration. A 5-year bond with annual coupon payments has a duration of about 4.2 years, because you get cash flows earlier. In Nigeria, where inflation eats real returns, that difference matters. The NGX All-Share Index has been volatile, but bonds are supposed to be safe—until duration bites. For example, a ₦1 million bond with 10-year maturity and 15% coupon, if yields jump to 20%, its price falls roughly 10% (duration approx. 6.5 years). That's ₦100,000 lost in market value. You only avoid that if you hold to maturity and ignore mark-to-market. But if you need to sell early—say, for school fees or a business emergency—you realize the loss. Always ask your fund manager: what's the average duration of your portfolio?

How to Use Duration to Your Advantage with T-Bills and NGX Stocks

Treasury bills are your best friend in a high-rate environment. With ₦500,000 at 20%, you earn ₦100,000 in interest yearly—no duration risk because bills mature in 364 days or less. That's your parking spot. But if you want higher returns, NGX stocks like Dangote Cement or MTN Nigeria offer dividends that beat inflation, but they carry equity risk, not duration risk. For bond lovers, consider shorter-duration mutual funds (under 3 years) that reinvest at higher rates. Avoid long-dated bonds unless you're certain rates will fall—and with CBN's hawkish stance, that's unlikely soon. SEC Nigeria's regulations require fund managers to disclose duration in fact sheets. Read them. Don't just look at the yield; ask: 'What happens if the CBN hikes 200 basis points next month?'

Taxes and Duration: The Hidden Cost on Your Bond Gains

In Nigeria, interest from treasury bills is taxed at 10% withholding, while bonds from corporates may attract capital gains tax if sold at a profit. But here's the twist: if you sell a bond before maturity at a loss due to duration, you don't get a tax deduction. That's a double whammy. For NGX stocks, dividends face a 10% withholding tax, and capital gains on shares are taxed at 10% (since 2025). So, if your bond fund loses 5% because duration is long, you still owe tax on the interest earned. On a ₦500,000 investment, you pay ₦10,000 tax on ₦100,000 interest, but your principal dropped by ₦25,000. Net, you're worse off. Use fintech apps like PiggyVest or Cowrywise—they offer fixed-income products with short durations, but always check the fine print. The SEC Nigeria's investor education portal has tools to calculate duration impact.

The 2026 Outlook: Naira Policy and Duration Strategy

With the naira still under pressure and foreign reserves tight, the CBN will likely keep rates high or even hike. That means duration is your enemy. If you own long bonds, you're exposed to price drops. Instead, build a ladder: buy 1-year, 2-year, and 3-year bonds so that each matures and reinvests at current rates. That reduces duration risk. Also, consider inflation-linked bonds if the government issues them—they adjust principal, softening duration impact. Avoid borrowing naira to buy bonds; that amplifies losses if rates rise. The NGX All-Share Index has rallied in 2026, but that's equity risk, not duration. For fixed income, stay short. The CBN's monetary policy committee meets quarterly—watch those dates. When they cut rates, then you can extend duration to lock in high yields.

Practical example in Nigeria

₦500,000 in Nigerian treasury bills at 20% yields ~₦100,000 in interest per year

Risks and cautions

Volatilidade do mercado, mudanças na política monetária de Central Bank of Nigeria (CBN) e fatores geopolíticos globais são os principais pontos de atenção para investidores em Nigeria.

Frequently asked questions

What is duration in simple terms for Nigerian bonds?

Duration is how many years it takes for you to recover your bond's price change from its coupon payments. Higher duration means more price sensitivity to interest rate changes.

Are Nigerian treasury bills safe from duration risk?

Yes, because they mature in under a year, so their duration is near zero. You won't lose principal if you hold to maturity, but you might miss out if rates rise later.

How does the CBN's 22.75% rate affect my bond portfolio?

High rates mean new bonds yield more, but existing bonds with lower coupons drop in price. If your bond's duration is 5 years, a 1% rate hike reduces its price by 5%.

Should I invest in NGX stocks instead of bonds to avoid duration?

Stocks don't have duration risk, but they have market risk. Diversify: use short-term bonds for safety and stocks for growth, based on your risk tolerance.

What tax do I pay on bond interest in Nigeria?

Treasury bill interest is taxed at 10% withholding. Corporate bond interest is taxed at your income tax rate, and capital gains on bonds sold at a profit are taxed at 10%.

Sources and authority

This guide is part of the MoneyApp financial education ecosystem. For tax questions in Brazil, see Agente Tributário.

Related articles

• What is the S&P 500 and how to invest
• Nasdaq Composite: complete guide
• Dow Jones Industrial Average explained

← Back to MoneyApp Nigeria

MoneyApp · Financial education in Nigeria · Consult SEC Nigeria for official guidance.

← Fixed Income — ver todos os artigos