How your rupees become crypto on an Indian exchange

What a crypto exchange in India does with the money you deposit covers what happens to your money once it is already inside a platform, custody, cold storage, Proof of Reserves. This piece stops one step earlier, at the transaction that gets it there in the first place.

The two ways rupees get onto an exchange, and why one disappears

Two rails move rupees onto an Indian crypto exchange. The first is a direct bank transfer, NEFT, RTGS or IMPS, sent from your own bank account to the platform's account, the same mechanics as paying a landlord. The second is UPI, the instant payment system run by the National Payments Corporation of India that already handles most of the country's digital payments, covered in full at what UPI is and how it works.

Bank transfer has never been in question. UPI has. In April 2022, Coinbase launched in India with UPI as a funding option and pulled it three days later, after the NPCI said it was not aware of any exchange using UPI for crypto, a statement with no legal order behind it (Medianama, read 2026-09-10). Other platforms lost UPI the same week. No RBI circular or NPCI directive has ever named crypto exchanges specifically, and the Supreme Court had already struck down the RBI's 2018 banking-ban circular in March 2020. What happened instead was banks quietly declining to process UPI for platforms they read as high risk, pressure that shows up nowhere in writing and can reverse just as quietly.

That pattern has not settled. NPCI discontinued UPI's peer-to-peer collect-request feature entirely from 1 October 2025, a fraud-prevention change unrelated to crypto (Medianama, read 2026-09-10). It shows how the rules inside UPI itself keep moving, on top of the informal pressure exchanges already face. UPI availability on any given exchange today is a banking-partner decision, not a published rule, worth checking inside the app before you rely on it. Qatobit's own INR rail runs on bank transfer only, NEFT, RTGS or IMPS, with UPI not yet part of it.

What the order book does with your rupees the moment you buy

An exchange's order book is a running list of every buy and sell order waiting to be filled, ranked by price. Placing a market buy order does not lock in the price shown on your screen a second earlier. The matching engine fills your order against whichever sell orders sit at the top of that book, working down through further orders if yours is large enough to need more than the first one. Each level down costs a little more than the one above it, which is where a bid-ask spread comes from even on a platform charging a flat percentage fee. A modest-sized buy on a liquid pair rarely moves through more than one or two levels, but the mechanic is the same at any size: the price you actually pay is set the moment your order clears the book, not the moment you tapped confirm.

An instant buy order works on the same underlying mechanism, dressed differently. Qatobit's own Quick Buy/Sell shows the real-time price and fee before you confirm, filling the order against deep liquidity behind every pair rather than making you place and watch a limit order yourself. The fee is stated upfront either way. What is worth checking, on any platform, is whether that stated price already reflects a spread or whether one is riding inside it invisibly, one of the five checks in How to read a crypto platform's fee schedule.

The P2P route, and the premium that rides on top of it

A P2P, or peer-to-peer, order works differently from the order book above it. Two people agree on a price directly, rupees from one side, crypto from the other, and the exchange does no more than hold both sides in escrow until the trade settles. No regulator sets that price. Indian investors reach for the P2P route most often when they want USDT specifically, since buying a dollar-pegged token this way is really buying access to dollar liquidity inside a rupee economy.

That access carries a premium. USDT typically trades three to five percent above its one-dollar peg on Indian P2P and exchange markets. The gap widened sharply in the middle of 2026: USDT traded around 102.88 rupees on 29 June 2026, roughly 8.5 percent above the official USD-INR rate of about 94.65 rupees, after enforcement action against firms accused of running unauthorised cross-border transfers through stablecoins squeezed the local supply of USDT (BitKE, read 2026-09-10). That premium sits inside the price you accept before any platform fee is even added. It is the least visible cost in the whole stack, because it never appears as a line item anywhere.

What actually leaves your account: GST now, TDS later

Two costs land during the purchase itself, and a third is commonly misplaced onto it.

The platform's stated fee is the first, whatever percentage it quotes on the trade. GST is the second, an 18 percent tax on that service fee specifically, confirmed by the government from July 2025 (finlaw.in, read 2026-09-10), and unrelated to the value of the crypto changing hands. Buy 10,000 rupees of crypto at a 0.5 percent fee, a typical starting tier on an Indian exchange, and the fee itself is 50 rupees. GST adds 9 rupees on top of that fee alone, for 59 rupees gone before the spread inside the quoted price is even counted.

The 1 percent TDS is not a third cost on this leg. Section 194S taxes the transfer of a virtual digital asset, and on an exchange trade the platform deducts it from what gets credited to the seller, not the buyer, a distinction worth confirming on your own platform. Paying rupees to receive crypto is not a transfer of a virtual digital asset on your part. It becomes one the day you sell that crypto, swap it for another coin, or exit a position that holds it. The rupee leaving your account today is not carrying that 1 percent. The coin landing in your portfolio is carrying the future date it eventually will.

Stack every cost between the rupee leaving your account and the coin arriving, on a straightforward bank-transfer purchase, and it runs: the platform's fee, GST on that fee, and whatever spread sits inside the quoted price. Take the P2P route instead, and the premium above the peg joins that list before the fee even applies. How TDS on crypto works in India and What CoinDCX charges, line by line, and the four costs no fee page shows carry the rest of this stack down to the rupee, including what happens at the other end when you sell.

A rules-based index buy versus a single discretionary coin

Everything above happens the same way whether you are buying one coin or a basket of them. What differs is what happens next.

A discretionary buy through something like Qatobit's Quick Buy/Sell is a single decision: one coin, one order, one 0.4 percent fee, one future TDS clock that starts on the day you eventually sell that specific position. A rules-based index purchase, through one of the four QSI indices, routes those rupees into a basket built on a published methodology instead, say ten thousand rupees split across the basket rather than one coin, carrying a 0.35 percent fee applied only when the basket rebalances rather than every time you buy or simply hold it. A monthly rebalance inside the index is not your own taxable transfer, a mechanism explained in full in Does a crypto index rebalance trigger tax in India?; your own taxable event is your own eventual sale of the basket. Crypto index or individual coins: what each one asks of you goes further into what that difference actually asks of an investor, past the mechanics of the purchase itself.

Frequently asked questions

Does UPI work for buying crypto in India?

Sometimes. No law or RBI circular bans UPI for crypto platforms, but banks have pulled support informally before, most visibly when Coinbase lost UPI three days after its April 2022 launch. Whether a platform offers UPI today depends on its banking partner rather than a fixed rule, so it is worth checking inside the app rather than assuming it from another platform's listing.

What happens to my rupees the moment I place a buy order?

The exchange's order book matches your order against the best available sell orders and fills it at whatever price those orders sit at, not the price shown a second before you confirmed. On a liquid pair, a small order rarely moves through more than one or two price levels, which is where the bid-ask spread comes from.

Do I pay GST when I buy crypto, or only when I sell?

GST applies on the buy leg too. The 18 percent tax lands on the platform's service fee, not on the value of the crypto itself, and applies every time that fee is charged, buying or selling.

Does the 1 percent TDS apply when I buy crypto with rupees?

No. Section 194S taxes the transfer of a virtual digital asset, and paying rupees to acquire crypto is not a transfer on your part. The 1 percent applies later, when you sell that crypto, swap it, or exit a position that holds it.

Is a P2P crypto purchase more expensive than a direct INR order?

Usually, when the P2P route is being used to acquire a dollar-pegged token like USDT. That token has traded three to five percent above its peg on Indian platforms under normal conditions, and spiked to roughly 8.5 percent in June 2026, a premium baked into the price before any platform fee applies.

Crypto investments are subject to market risk. Not financial advice.