India's Unified Payments Interface — UPI — has become the world's largest real-time payment system by transaction volume. For crypto users in India, UPI is the most practical way to buy digital assets in Indian rupees. This guide explains how UPI works, what makes it relevant for crypto, and walks through the purchase process step by step.

What UPI is and how large it has become

UPI is a real-time payment system developed by the National Payments Corporation of India (NPCI) and launched in 2016. It allows bank-to-bank transfers using a simple identifier — a UPI ID, phone number or QR code — without sharing account details. Transfers settle in seconds at any time of day.

The scale of UPI in 2025 is remarkable: the system processed 21.63 billion transactions in December 2025 alone — a record — and 228.3 billion transactions over the full year, up from 172.2 billion in 2024 (NPCI data). As of early 2026, UPI has over 500 million unique registered users and accounts for 80–90% of India's retail digital payments.

Key facts: UPI in 2025–2026

• UPI processed 21.63 billion transactions in December 2025 — highest monthly volume on record (NPCI)

• Annual UPI volume: 228.3 billion transactions in 2025, up 33% year-on-year

• UPI value: approximately $336 billion in December 2025

• 500+ million unique UPI users as of early 2026

• UPI accounts for 80–90% of India's retail digital payment volume

• UPI expanded to 12+ countries including Singapore, UAE, France and Bhutan by 2026

• UPI Autopay supports recurring mandates — enabling automated scheduled payments

How to buy cryptocurrency with UPI: step by step

Step 1: Select the cryptocurrency and amount

On the FastCoins platform, navigate to the Buy section. Choose the asset you want to purchase — Bitcoin (BTC), Tether (USDT), Ethereum (ETH) or another supported cryptocurrency. Enter the amount in INR. The applicable rate is displayed before you confirm.

Step 2: Choose UPI as your payment method

Select UPI from the available payment methods. The platform will generate a UPI payment request or display a UPI ID and amount to send to.

Step 3: Enter your wallet address

Provide the wallet address for receiving your cryptocurrency. Double-check both the address and the network — crypto transactions are irreversible once confirmed.

Step 4: Complete identity verification if required

Identity verification may be required in accordance with Indian KYC and AML regulations. This typically involves submitting a government-issued photo ID and PAN card information.

Step 5: Approve the UPI payment in your app

Open your UPI-enabled app — Google Pay, PhonePe, Paytm or your bank app. Approve the payment request or manually enter the UPI ID and amount. Enter your UPI PIN to authorise. The payment settles within seconds.

Make sure your UPI app is linked to a bank account with sufficient balance. UPI transactions are final — there are no chargebacks.

Step 6: Receive your cryptocurrency

Once the platform confirms receipt of your UPI payment, your cryptocurrency is sent to the wallet address you provided.

Things to know when using UPI for crypto

• UPI is only available for transactions in Indian rupees (INR)

• UPI is free for individual users under NPCI policy

• Daily UPI limits vary: typically up to INR 1 lakh per transaction for most banks

• UPI transactions are final — no chargebacks or reversals

• Some banks may temporarily restrict UPI for crypto purchases — check with your bank if a transaction is declined

Frequently Asked Questions

Can I sell crypto and receive INR via UPI?

Yes. FastCoins supports UPI for selling cryptocurrency and receiving Indian rupees. Provide your UPI ID during the sell process and the proceeds are sent to your linked bank account.

Is UPI available outside India?

UPI has expanded internationally and is accepted in Singapore, UAE, France, Mauritius and Bhutan among other countries. Check with your bank for international UPI availability.

What cryptocurrencies can I buy with UPI?

On FastCoins, you can buy 1000+ digital assets with UPI, including BTC, USDT, ETH, SOL and more. The full list is available on the Currencies page.

FastCoins supports UPI for buying and selling cryptocurrency in India. Visit the buy page and select UPI as your payment method.

→ Buy cryptocurrency with UPI on FastCoins — visit the buy page.

This article is for informational purposes only and does not constitute financial advice, investment guidance or a recommendation to buy, sell or hold any digital asset. Cryptocurrency involves risk. Always conduct your own research before making financial decisions.