Why does government bonds dropped in the amount invested in it?

Yes — what you’re seeing is normal for bonds, but it depends on how you’re viewing the value.
A key point first:
Government bonds do NOT reduce your “final repayment value” if you hold them to maturity.
What usually changes is the market value (unit price) before maturity.
Let’s break it down clearly.
1) Why your bond value appears to have dropped
If you invested in an FGN Bond via an app (like Cowrywise, i-invest, Wealth.ng, etc.), what you’re usually seeing is:
Mark-to-market value (current market price), not your guaranteed payout value
So your investment dashboard shows:
Original investment = ₦X
Current market value = ₦X ± change
That “drop” is not a loss unless you sell early.
2) Can government bonds actually reduce in value?
✔ YES — but only in market price (not principal repayment)
Bond prices move in the secondary market because of:
A. Interest rate changes (MOST IMPORTANT FACTOR)
This is the main reason.
When interest rates in the economy rise, existing bonds become less attractive.
Example:
You bought bond at 12% interest
New bonds are now offering 18%
Investors will prefer the 18% bond, so: ➡ your 12% bond becomes less valuable
➡ its market price drops
This is called:
Interest rate risk (inverse relationship)
B. Inflation changes
If inflation increases:
Investors demand higher yields
Existing bonds lose market value
C. Central Bank monetary policy (CBN actions)
When the Central Bank of Nigeria raises interest rates:
Bond yields rise
Old bonds fall in price
D. Time remaining to maturity
The closer the bond gets to maturity → the more stable it becomes
Long-term bonds fluctuate more
E. Market demand and liquidity
If many investors are:
selling bonds → price drops
buying bonds → price rises
3) Important distinction (THIS is where confusion happens)
Two values exist:
1. Face value (your guaranteed repayment)
This is what government pays at maturity
Example: ₦1,000,000 invested → you still get ₦1,000,000 (plus interest)
2. Market value (what apps show daily)
Can go up or down
Only matters if you sell before maturity
4) So did you lose money?
Only in these cases:
You sold the bond early at a lower price
Or you are in a fund where NAV fluctuates and you exited early
If you hold to maturity:
❌ No loss on principal
✔ You still receive full capital + interest agreed
5) Why it may look worse in apps
Some platforms show:
Daily bond valuation
Unit price movement
Fund NAV (if it’s a bond fund, not direct bond)
So even small interest rate changes can show as:
“-2%”
“-5%”
etc.
But this is paper movement.
6) Practical example (simple)
You invest:
₦500,000 in FGN Bond (5 years, 14%)
After 6 months:
Interest rates rise in Nigeria
Market price drops → your app shows ₦480,000
But if you wait till maturity:
You still receive ₦500,000 + interest
7) Bottom line
Government bonds do not permanently reduce your capital
They only fluctuate in market value before maturity
The biggest driver is interest rate changes (CBN policy)
If you want deeper clarity
Tell me:
The platform you used (e.g. Cowrywise, i-invest, Wealth.ng)
Whether it was “bond” or “bond fund”
I can explain exactly what happened in your specific case and whether it’s safe to hold or exit.