How to calculate profit when selling a currency note?
The profit calculation for a currency note sale follows the standard capital gains formula: selling price minus cost of acquisition minus transfer expenses equals the taxable gain. For long-term holdings, the cost of acquisition is first adjusted using the Cost Inflation Index before this subtraction. The calculation is straightforward in principle — the difficulty is assembling the correct figures, especially the acquisition cost.
The basic formula
For short-term capital gains (held 24 months or less): Taxable gain = Selling price − Cost of acquisition − Transfer expenses.
For long-term capital gains (held more than 24 months): Taxable gain = Selling price − Indexed cost of acquisition − Transfer expenses. The indexed cost of acquisition = Cost of acquisition × (CII of year of sale ÷ CII of year of acquisition).
Transfer expenses are costs directly incurred in making the sale — auction house commission, platform fees, packing and shipping if borne by the seller, and any grading costs required for the sale. These reduce the taxable gain. General overhead, cataloguing costs, and costs of the collection that cannot be specifically attributed to the note sold are not deductible as transfer expenses.
Worked example — short-term
A collector buys a star note in March 2024 for ₹800. In October 2024 — seven months later — the collector sells it for ₹3,500. Platform fee paid: ₹175.
Holding period: 7 months (short-term — under 24 months). Taxable gain = ₹3,500 − ₹800 − ₹175 = ₹2,525. This ₹2,525 is added to the collector's total income and taxed at their applicable slab rate.
Worked example — long-term with indexation
A collector buys a pre-2005 MG Series ₹100 note with a rare prefix in January 2021 for ₹4,500. In March 2026 — 62 months later — the collector sells it for ₹18,000. Shipping cost borne by seller: ₹250.
Holding period: over 24 months (long-term). CII for 2020-21: 301. CII for 2025-26: 363 (approximate). Indexed cost = ₹4,500 × (363 ÷ 301) = ₹4,500 × 1.206 = ₹5,427. Taxable gain = ₹18,000 − ₹5,427 − ₹250 = ₹12,323. This ₹12,323 is taxed at 20% (long-term capital gains rate on personal property). Tax = ₹2,465.
Compare to short-term treatment: if the collector had sold after 20 months instead, indexed cost would not be available. Taxable gain = ₹18,000 − ₹4,500 − ₹250 = ₹13,250. At slab rate of 30%: tax = ₹3,975. The long-term treatment with indexation saves ₹1,510 in tax in this example.
When business income treatment applies
If the sale is treated as business income — because the collector is assessed as a dealer — the calculation changes. Business income = Selling price − Cost of purchase − Allowable business expenses. There is no 24-month threshold, no indexation benefit, and no reduced rate. All profits are taxed at the dealer's applicable income tax slab rate. Business expenses (storage, insurance, platform subscriptions, professional fees, travel for acquisition) can be deducted, which partially offsets the loss of indexation benefit.
Laws & authorities referenced in this chapter
Income Tax Act 1961 — §48 (computation of capital gains; indexation; transfer expenses deduction)
Income Tax Act 1961 — §112 (tax on long-term capital gains — 20% with indexation)
Income Tax Act 1961 — §2(42A) (24-month threshold for personal property short-term vs long-term)
Cost Inflation Index — notified annually by CBDT under §48(ii)
Profit = Selling price − Acquisition cost − Transfer expenses. Long-term (over 24 months): apply Cost Inflation Index to acquisition cost first. Short-term (under 24 months): no indexation; slab rate applies. Business income: no indexation, slab rate, but business expenses deductible. Document every figure — acquisition cost is the most commonly missing element and the most consequential for the tax calculation.
This is educational content, not legal advice. For a specific situation, please consult a qualified legal professional. Excerpted from Currency, Coins & The Law by Mayank Agarwal, Part 6: The Invisible Obligation.