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Published March 11, 2026

What is a Treasury Bill (T-Bill): A Complete Guide

Learn how Treasury Bills work in India. Discover how to park your short-term cash safely, buy T-bills at a discount, and earn better returns than a savings account.

Stashfin

Stashfin

Mar 11, 2026

What is a Treasury Bill? (The Ultimate Risk-Free Parking Spot for Your Cash)

Imagine you just sold a piece of land, or you have a massive tax payment due in exactly six months. You have ₹10 lakh sitting in a savings account.

You can't put it in the stock market because a sudden crash would completely wipe out your plans. But leaving it in a regular bank account means inflation is quietly eating away at your purchasing power every single day.

You need a place to park that cash that is 100% safe, highly liquid, and pays better than a savings account. Enter the Treasury Bill.


Loaning Money to the Government: How It Works

A Treasury Bill (commonly called a T-Bill) is basically a short-term IOU from the central government. When the Government of India needs quick cash to fund daily operations, build infrastructure, or bridge a budget gap, they borrow it from the public.

When you buy a T-Bill, you are acting as the bank. You are literally lending your hard-earned cash directly to the government. Because the government controls the printing presses and the power to tax, the chances of them defaulting on your loan are virtually zero.

Key Takeaway: T-Bills are considered one of the safest financial instruments on the planet due to their sovereign guarantee.


The Magic of the Discount (No Interest, Just Profit)

Here is the most confusing part for beginners: T-Bills do not pay regular interest. There is no 6% annual payout hitting your bank account every month.

Instead, they are issued at a discount to their face value. When the bill matures, the government pays you the full, un-discounted amount. The difference is your guaranteed profit.

The Math in Action:

  • Face Value: ₹100
  • Purchase Price: ₹95
  • Holding Period: 91 Days
  • Payout at Maturity: ₹100
  • Your Profit: ₹5 ---

Why Buy T-Bills Instead of a Fixed Deposit?

Feature Bank Fixed Deposit (FD) Treasury Bill (T-Bill)
Safety Insured up to ₹5 Lakh (DICGC) Sovereign Guarantee (Unlimited)
Liquidity Penalty for premature withdrawal Sell on secondary market (No penalty)
Issuer Commercial Banks Central Government

1. The Ultimate Safety Net

While bank FDs are generally safe, banks can fail. Your money in a bank is only insured up to ₹5 lakh by the RBI. A T-Bill is backed by the Indian Government. Whether you park ₹10,000 or ₹50 crore, every rupee is protected.

2. No Lock-In Punishments

If you break a one-year FD early, the bank hits you with a penalty. T-Bills don't punish you. If you need cash, you can simply sell your T-Bill to another investor on the secondary market via your broker.


The Three Flavors of Indian T-Bills

In India, T-Bills are strictly short-term instruments that always mature in less than a year. You can choose from three specific timelines:

  1. 91-Day T-Bills: Perfect for parking a quarterly bonus.
  2. 182-Day T-Bills: Ideal for saving for a down payment in six months.
  3. 364-Day T-Bills: The best option for a safe, one-year cash stash.

How Can a Regular Person Actually Buy One?

A few years ago, buying a T-Bill was tedious. Today, it takes about three clicks.

  • RBI Retail Direct: Buy directly from the RBI portal with zero commissions.
  • Stock Brokers: Use apps like Zerodha, Upstox, or Groww to bid for T-Bills using your existing demat account.
  • Minimum Investment: You don't need to be a billionaire; you can start with just ₹10,000.

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