Treasury Bills vs. FGN Bonds in Nigeria: Which Fits Your Goal?

Treasury bills suit short-term goals (under a year) and smaller amounts; FGN bonds suit long-term, tax-free income (5+ years) and larger investments — both are backed by the Federal Government, but they’re built for very different purposes.

Both are among the lower-risk places to put money in Nigeria, but picking the wrong one can mean locking cash away when you might need it, or leaving tax-free income on the table. Neither is universally better — the right choice depends on your timeline, how much you have, and whether you need regular income or a lump sum at the end.

Investors often focus only on yield, but investment horizon usually matters far more than a 1–2% difference in returns. This guide compares the two side by side — returns, tax, minimums, liquidity — and the real scenarios where each makes more sense. If you’re still learning the basics of either, our Treasury Bills guide and FGN Bonds guide cover the background first.

Quick Verdict

• Need your money within 1 year? Treasury bills are usually the more suitable choice
• Want long-term tax-free income and can invest for 5+ years? FGN bonds are usually the more suitable choice
• Treasury bills tend to fit short-term savings; FGN bonds tend to fit long-term income and retirement planning

Quick Comparison

A Note on Other FGN Bond Types

Most comparisons of Treasury bills and FGN bonds refer to Standard FGN Bonds — the long-term bonds issued by the DMO and traded on FMDQ. The government also issues FGN Savings Bonds (retail bonds, ₦5,000 minimum, quarterly payments) and FGN Sukuk Bonds (Shariah-compliant, asset-backed, paying rental income instead of interest). Both are tax-exempt and government-backed but serve different investor needs — see our FGN Savings Bonds guide and Sukuk guide. This article focuses on Standard FGN Bonds, the most common comparison point for Treasury bills.

Key Differences

Returns and Payment Structure

Treasury bills pay everything at the end; FGN bonds pay every six months. You buy a T-bill at a discount, wait for maturity, and collect the full face value — no income along the way, and your true yield exceeds the quoted discount rate because you invested less upfront than you’ll receive. A ₦10,000,000 FGN bond with a 15% coupon pays ₦750,000 twice a year, tax-free, for the life of the bond, with principal returned at maturity.

Which structure suits you depends on whether you need cash flow now or a lump sum later — a retiree supplementing a pension may prefer semi-annual bond payments, while someone saving for a house deposit in 18 months may prefer a T-bill maturing right when they need it.

Tax

This is where FGN bonds pull ahead clearly. T-bill returns carry a 10% withholding tax — earn ₦100,000 in profit and you receive ₦90,000. FGN bond interest is fully tax-exempt under current legislation, so every kobo is yours, and over a decade or more that difference compounds meaningfully. See our tax guide for the full breakdown.

Minimum Investment

Treasury bills are far more accessible. You can buy through a bank with ₦100,000 or an investment app with as little as ₦10,000. FGN bonds at the primary auction are effectively institutional-scale; the secondary market opens the door for individuals, typically starting around ₦100,000, though availability depends on what brokers have in inventory.

Liquidity

Both can be sold before maturity on the secondary market, but the experience differs. Standard FGN bonds trade actively on FMDQ and generally find buyers more easily — though the price depends on current interest rates, and a bond sells at a discount if rates have risen since you bought. T-bills can also be sold early, though the secondary market is generally less active, so you may not always get your preferred price, especially on smaller holdings.

Safety

Both are backed by the Federal Government, which has historically not defaulted on naira-denominated debt — from a credit-risk standpoint they’re considered similarly low-risk, though this reflects the historical record rather than a guarantee. The real difference is market risk: long-term bonds are more sensitive to interest-rate changes than short-term T-bills.

Example: ₦1,000,000 in Each

Illustrative assumptions only: Treasury bill yield 20%, FGN bond coupon 16%.

Treasury Bill: gross return ₦200,000; after 10% tax, ₦180,000, received at maturity.

FGN Bond: annual coupon ₦160,000; tax ₦0; net return ₦160,000, paid as ₦80,000 every six months.

Treasury bills may sometimes offer higher short-term yields, but FGN bonds become increasingly attractive for investors who value tax-free income and longer-term certainty. Actual rates change constantly — check current figures before deciding.

When Treasury Bills May Fit Better

• You’ll need the money within 12 months. T-bills are built for short-term savings; bonds lock capital for years. If your goal is less than a year away, T-bills generally align better.
• You’re starting with a smaller amount. With apps accepting as little as ₦10,000, T-bills are far more accessible than bonds.
• You want simplicity. One transaction, one payout — no coupon dates to track and no semi-annual payments to manage.

When FGN Bonds May Fit Better

• You want regular, tax-free income. FGN bonds are among the few government-backed instruments paying predictable, tax-free income every six months — often a good match for retirees, income-focused investors, or anyone building a long-term passive income stream.
• You’re investing for 5+ years. Bonds reward patience; the longer your horizon, the more you benefit from locking in a fixed coupon and letting the tax exemption work in your favor.
• You have significant capital and want tax efficiency. At multi-million-naira scale, the 0% tax on bond coupons is a substantial advantage over T-bills, which lose 10% of every return to withholding tax.

Which Fits Your Situation?

Can You Own Both?

Yes — many experienced investors hold both. Treasury bills provide short-term stability; FGN bonds provide long-term income. This combination works well for investors who want to keep emergency funds accessible in T-bills, build a long-term income stream with bonds, and diversify their fixed income holdings. If you have savings earmarked for different time horizons, holding both instruments can make sense.

Frequently Asked Questions

Key Takeaways

• Treasury bills are short-term (up to 1 year), taxed at 10%, and accessible from ₦10,000 — generally suited to short-term savings
•  FGN bonds are long-term (5–30 years), fully tax-exempt, and pay interest every six months — generally suited to long-term income and tax efficiency
• Both are government-backed with historically low default risk
• Many investors hold both to balance short-term liquidity with long-term income
• Matching the instrument to your timeline, capital, and income needs matters more than chasing the highest headline yield

Your Next Step

Ask yourself: When do I need this money back? Under a year — start with our Treasury Bills guide and Treasury Bill Calculator. Five years or more, especially if you want regular income — explore our FGN Bonds guide. Somewhere in between, say 2–3 years — our FGN Savings Bonds guide covers a middle ground with a ₦5,000 minimum and quarterly tax-free payments. For the full comparison across every instrument, see our best fixed income investments in Nigeria guide.

This content is for educational purposes only and does not constitute financial advice. All investments carry risk, including the possible loss of capital. Tax treatment can change over time — verify current legislation with the Federal Inland Revenue Service (FIRS) or a licensed tax advisor. Rates and minimums change; please do your own research or consult a licensed financial advisor before making any investment decision.