📚 PASS Investment Adviser (Level 2) Difficulty: Beginner ℹ️ Info   ~5 min read
📌 Chapter 11.1 — Sources of Income

Imagine you are an analyst refining a client’s fixed-income portfolio strategy, specifically looking at how different government-backed instruments impact their post-tax liquidity. You notice the portfolio holds a mix of short-term Treasury Bills (T-Bills) and long-term dated Government Securities (G-Secs). When projecting the tax impact, you must distinguish between the ‘discount’ nature of T-Bills and the ‘coupon-bearing’ nature of G-Secs, as they trigger different tax heads. Miscalculating these leads to incorrect projections of internal rates of return (IRR) for high-net-worth clients.

Treasury Bills are zero-coupon instruments issued by the Reserve Bank of India at a discount to their face value. Because they do not provide periodic interest, the difference between the acquisition cost and the redemption value at maturity is strictly treated as capital gains. Under the Income Tax Act, since T-Bills have a maximum maturity of 364 days, the profit realized is classified as a short-term capital gain (STCG).

This is a vital distinction because, unlike dated securities, T-Bills never fall under the ‘interest income’ bucket, which might otherwise be subject to different withholding or slab-rate applications.

In contrast, dated Government Securities are instruments with a maturity of one year or more that pay semi-annual coupons. These coupons are taxed as ‘Income from Other Sources’ at the investor’s applicable slab rate. Furthermore, the capital appreciation or depreciation of a dated security—if sold in the secondary market prior to maturity—is treated as a capital gain or loss, subject to specific holding period criteria to determine if it is short-term or long-term.

This bifurcated treatment creates a complex tax ledger for the investor, where interest is taxed as regular income, while the price movement is taxed under the capital gains regime.

For your valuation models, this matters significantly when comparing the ’net-of-tax’ yields of a 182-day T-Bill versus a 1-year G-Sec. If an investor is in the highest tax bracket, the interest-bearing G-Sec might result in a lower net yield than a T-Bill, even if the pre-tax yields appear competitive. Analysts who overlook these structural differences fail to provide accurate financial advice, as the ’economic substance’ of the return—whether it is interest or capital appreciation—governs the ultimate tax liability the client will face at the end of the financial year.

Nuance

⚠️ Nuance
A common pitfall is the assumption that all government-backed income is taxed uniformly. Candidates often mistakenly apply interest taxation rules to the discount earned on T-Bills, ignoring that the tax law treats the discount as a capital receipt. Conversely, they may conflate the coupon of a dated security with capital gains, failing to realize that periodic interest is always treated as revenue income regardless of the security’s maturity profile.

Check Your Understanding

Practice Question 1

An investor holds a 91-day Treasury Bill purchased at Rs. 98 and redeemed at Rs. 100. How is the Rs. 2 profit categorized for tax purposes?

Practice Question 2

Which of the following is a primary tax-related distinction between a Dated Government Security and a T-Bill?

This is a companion read for Section 11.1 — Sources of Income from PASS Investment Adviser (Level 2) by Akhilesh Gururani, available on Amazon Kindle.

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