Minimum Amount to Invest in Treasury Bills in Nigeria (2026 Guide)

Estimated Reading Time: 10 minutes

You’ve read about Treasury bills. You understand they’re backed by the government, sold at a discount, and pay you profit at maturity. But there’s one question that still stands between you and actually buying one: how much money do I need?

It’s the question that keeps many Nigerians on the sidelines. The answer isn’t one number — it depends entirely on where you buy. Walk into a bank, and the minimum is ₦100,000. Open an app like Bamboo or i‑invest, and you can start with ₦10,000. Same government security. Same safety. Very different entry points.

When I bought my first Treasury bill, I assumed I needed tens of thousands of naira. Discovering that some platforms allowed smaller investments completely changed how accessible fixed income felt. This guide breaks down the exact minimum investment for Treasury bills across every platform available to Nigerians in 2026. No guesswork. Just the numbers you need to get started. If you’re still learning what T‑bills are and how returns work, the guide to Treasury bills in Nigeria explains the fundamentals.

Treasury Bill Minimum Investment Summary

Purchase Method	Minimum Amount
Bank	₦100,000
Investment Apps	₦10,000+
Stockbrokers	₦20,000–₦500,000 (varies by firm)

Most Nigerians can start investing in Treasury bills with ₦10,000 through investment apps, while direct purchases through banks typically require a minimum subscription of ₦100,000. Licensed stockbrokers are regulated by the Securities and Exchange Commission (SEC) and must meet specific capital and operational standards like ARM Securities, accept as little as ₦20,000, while others, such as Stanbic IBTC Bluenet, require ₦500,000 or more.

What You’ll Learn

By the end of this guide, you’ll know:

• The minimum amount needed to buy Treasury bills through banks, apps, and brokers
• Why the minimum differs between platforms
• Which option is best for your budget
• Additional costs to factor in beyond the minimum

Minimum Investment by Platform

Platform	Minimum	Direct Ownership	Convenience	Best For
Commercial banks	₦100,000	Yes	Medium	Larger investors, direct ownership
Investment apps	₦10,000+	No (pooled)	High	Beginners, small budgets, convenience
Licensed stockbrokers	₦20,000–₦500,000	Usually Yes	Medium	Investors who want stocks and T‑bills in one place

Examples of investment apps: Bamboo (₦10k minimum), i‑invest (₦10k minimum). Examples of stockbrokers: ARM Securities (₦20k), Stanbic IBTC Bluenet (₦500k). Always confirm current minimums directly with the platform before investing.

Why the Minimum Varies

The difference comes down to how Treasury bills are sold.

At the primary market, the Central Bank of Nigeria (CBN) auctions T‑bills in large denominations. The standard unit is ₦50,001,000. Banks pool customer funds to meet that threshold, but they typically require each individual to contribute at least ₦100,000.

Investment apps use a different approach. They pool thousands of small investors together and submit a single large bid at the CBN auction. You own a proportional share of the T‑bill based on what you contributed. This allows apps like Bamboo and i‑invest to offer minimums as low as ₦10,000.

Licensed stockbrokers have the widest range. Some, like ARM Securities, welcome small investors with as little as ₦20,000. Others, particularly full‑service firms with dedicated wealth management desks (like Stanbic IBTC Bluenet), may require ₦500,000 or more. They may buy T‑bills on the secondary market or pool funds for primary auctions, with minimums that vary significantly by firm.

Treasury Bill Minimum Investment History

The biggest change in Treasury bill investing over the last decade has been accessibility. What once required tens of thousands of naira can now be accessed through pooled investment platforms with as little as ₦10,000.

Period	Typical Bank Minimum
Before Fintech Apps	₦100,000+
Today Through Apps	₦10,000+

Bank vs App vs Broker

Factor	Bank	App	Broker
Minimum	₦100,000	₦10,000+	₦20,000–₦500,000
Ownership	Direct	Pooled	Usually Direct
Convenience	Medium	High	Medium
Best For	Large Investors	Beginners	Existing Investors

Is ₦10,000 Enough to Invest in Treasury Bills?

Yes. Several investment platforms allow Nigerians to invest in Treasury bills with as little as ₦10,000 through pooled investment structures. Apps like Bamboo and i‑invest are examples of platforms that accept this amount. While you won’t earn life‑changing returns on ₦10,000 alone, it’s enough to learn how the process works, see your first profit at maturity, and build the confidence to invest larger amounts over time.

Can You Buy Treasury Bills With ₦5,000?

Many beginners assume Treasury bills require large amounts of money. While direct subscriptions through banks typically require ₦100,000 or more, some pooled investment platforms may allow participation with smaller amounts. If your budget is below ₦10,000, consider building your savings first or using a money market fund until you reach the required threshold.

Should You Wait Until You Have ₦50,000?

No. Starting with ₦10,000 today is usually better than waiting indefinitely to accumulate a larger amount. The habit of investing regularly matters far more than the starting sum. You can always add more later as your savings grow.

My Take

When beginners ask me whether they should wait until they have ₦50,000 before investing, my answer is usually no. Starting with ₦10,000 helps you learn the process, understand auction timing, and build the habit of investing. Experience is often more valuable than squeezing out a slightly higher return on a larger amount later.

Real Examples: What Your Money Can Buy

If You Have ₦10,000

You can buy fractional Treasury bills through investment apps like Bamboo or i‑invest. At a 20% discount rate, here’s how the numbers look:

• Gross return: ₦2,000
• Withholding tax (10%): ₦200
• Net return: approximately ₦1,800

Small, but it’s a start.

If You Have ₦20,000

You can use apps comfortably, or approach a broker like ARM Securities that accepts this amount. At 20%:

• Gross return: ₦4,000
• Withholding tax: ₦400
• Net return: approximately ₦3,600

If You Have ₦500,000

You can invest through most brokers (including higher‑minimum firms like Stanbic IBTC Bluenet), or go directly through a bank. At 20%:

• Gross return: ₦100,000
• Withholding tax: ₦10,000
• Net return: approximately ₦90,000

Which Option Is Right for You?

Your Budget	Best Choice
₦10,000 – ₦20,000	Investment apps (Bamboo, i‑invest)
₦20,000 – ₦100,000	Apps, or a broker like ARM Securities (₦20k minimum)
Above ₦100,000	Your bank (direct ownership), or a broker depending on their minimum

If you’re investing in Treasury bills for the first time, a low‑minimum investment app or an accessible broker like ARM Securities can help you gain experience before committing larger amounts. For a complete walkthrough, see the step‑by‑step guide to buying Treasury bills in Nigeria .

Beyond the Minimum: Other Costs to Consider

The minimum is what gets you in the door. But there are other factors that affect your actual returns.

The Discounted Price

You don’t pay the full face value upfront. If you’re buying a 364‑day T‑bill with a face value of ₦100,000 at a 20% discount rate, the bank debits approximately ₦80,000 from your account — not the full ₦100,000. That difference is your profit, received at maturity.

Withholding Tax

Treasury bill returns are subject to a 10% withholding tax, deducted at source. If your T‑bill earns ₦10,000 in profit, you’ll receive ₦9,000 after tax. For a full breakdown of tax across all fixed income instruments, see the tax on fixed income investments guide .

Platform Fees

Investment apps typically take a small spread — the difference between the auction rate and what they pass on to you. This isn’t a hidden charge; it’s how they make money. Banks and brokers may also charge administrative fees, though these are usually minimal for larger investments.

Inflation

A 20% return looks good on paper. But if inflation is running at 28%, your purchasing power is still shrinking. Use our Nigerian Inflation Rate Tracker to measure your real returns before committing large sums.

Frequently Asked Questions

What is the minimum amount to buy Treasury bills in Nigeria?

₦100,000 at banks. As low as ₦10,000 through investment apps like Bamboo and i‑invest. Some stockbrokers accept as little as ₦20,000 (ARM Securities), while others require up to ₦500,000 (Stanbic IBTC Bluenet).

Why is the bank minimum so much higher than apps?

Banks submit bids directly at the CBN auction, where the standard unit is ₦50,001,000. They require individuals to contribute at least ₦100,000. Apps pool thousands of small investors together to meet the threshold.

Can I buy Treasury bills with ₦10,000?

Yes. Apps like Bamboo and i‑invest allow you to start with ₦10,000. Always confirm current minimums directly with the platform.

Do I need a BVN to buy Treasury bills?

Yes. Your BVN is required for identity verification, whether you buy through a bank, an app, or a stockbroker.

Is there a maximum amount I can invest?

There is no upper limit for Treasury bills at banks or through brokers. Apps may have limits based on the pooled fund structure, but these are typically high enough for most individual investors.

Can students invest in Treasury bills?

Yes. As long as you have a valid ID and BVN, you can open an investment app account and start buying T‑bills. There is no age restriction beyond the standard KYC requirements.

Can I add more money after my first investment?

Yes. You can buy additional T‑bills at any future auction. Many investors start small and increase their investment over time as their confidence and savings grow.

Is ₦10,000 enough to start investing?

Yes. While the returns won’t be life‑changing, it’s enough to learn the process and build the habit.

What happens when my Treasury bill matures?

The CBN automatically credits the full face value to your bank account. You don’t need to take any action.

Can I invest monthly in Treasury bills?

Yes. You can buy T‑bills at each CBN auction, which typically happens every two weeks. This allows you to invest regularly and ladder your maturities.

Related Guides

• Treasury Bills in Nigeria Explained — How they work, true yields, and risks
• How to Buy Treasury Bills in Nigeria — Step‑by‑step bank, app, and broker methods
• Treasury Bill Calculator — Estimate your returns before you invest
• Treasury Bills vs Fixed Deposits — Which is better for your savings?
• Treasury Bills vs FGN Bonds — Short‑term vs long‑term government securities
• Best Fixed Income Investments in Nigeria — Every instrument ranked
• Tax on Fixed Income Investments — What you’ll pay and what’s exempt

Key Takeaways

• The minimum amount to invest in Treasury bills in Nigeria depends on where you buy — ₦100,000 at banks, as low as ₦10,000 through apps (Bamboo, i‑invest), and ₦20,000–₦500,000 through stockbrokers.
• Banks offer direct ownership. Apps offer convenience and lower minimums through pooled funds.
• Starting with ₦10,000 today is better than waiting until you have more. The habit matters more than the starting amount.
• Factor in withholding tax (10%) and platform fees when calculating your net return.

Your Next Step

If you have ₦10,000 or more, download an investment app (like Bamboo or i‑invest) today and buy your first fractional Treasury bill. It takes under 10 minutes. If you have ₦20,000 or more, you could also approach a broker like ARM Securities. For ₦100,000 and above, your bank is the most direct route.

Use our Treasury Bill Calculator to see exactly what your money can earn before you commit. For a broader understanding of how T‑bills work, returns, and risks, see the guide to Treasury bills in Nigeria explained .

Let’s hear from you.

What’s been holding you back from buying your first Treasury bill — the minimum amount, the process, or something else? Drop a comment below. I read every single one, and your question might be exactly what another beginner needs to see.

If this guide helped you understand what you need to start, share it with someone who’s been wondering if they have enough.

Disclaimer: This content is for educational purposes only and does not constitute financial advice. All investments carry risk, including the possible loss of capital. Minimums and rates are based on publicly available information as of mid‑2026 and may change. Please verify directly with your bank, app, or broker before investing.