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What Is a Payment Gateway and How Does It Work in India? (2026)
A plain-English explanation of payment gateways, how they process UPI and card payments in India, what they cost, and how they differ from payment aggregators.
A payment gateway is the software that lets a business accept digital payments - it securely carries a customer's payment from their bank or UPI app to your account. If you sell anything online in India, a payment gateway is the piece that actually collects the money.
How a payment gateway works, step by step
- A customer clicks pay and chooses a method (UPI, card, netbanking, wallet).
- The gateway securely captures and encrypts the payment details.
- It routes the request to the relevant network - the UPI system, or the card networks and banks - for authorisation.
- The bank approves or declines, and the gateway returns the result to your site in seconds.
- The funds are settled to your bank account, typically one to three business days later.
All of this happens in a few seconds at checkout. The gateway's job is to make it secure, fast and reliable.
Gateway vs aggregator vs processor
These terms get mixed up. A payment gateway is the technology layer that captures and routes the payment. A payment aggregator (which is what most Indian SMBs actually use - Razorpay, Cashfree, PayU) bundles the gateway with a merchant account so you do not need your own, and handles compliance. A processor is the back-end that moves money between banks. For a small business, you simply sign up with an aggregator and get all of it together.
What it costs in India
Most charge a percentage per successful transaction (the MDR), usually around 1.95 to 2% on cards and netbanking, with UPI often free or near-free for merchants under government policy. There is typically no setup or annual fee on standard plans. We break the numbers down in our payment gateway charges guide.
Choosing one
For most Indian businesses the practical choice is between aggregators like Razorpay and Cashfree; see our Razorpay vs Cashfree comparison or browse the payments category. If you just need to get paid fast, see how to accept UPI payments on your website.
Fees and rules change; confirm current pricing on the provider's site.
Written by
Arjit Jindal · Co-founder, FindThatSoftware
Arjit co-founded FindThatSoftware, an India-first software-decision platform. He writes about how Indian businesses actually choose, price, and stack the software they run on - with the forex, GST, and support trade-offs global directories leave out.
FAQ
Frequently asked questions
- What is a payment gateway in simple terms?
- A payment gateway is the software that securely carries a customer's payment from their bank or UPI app to your business account when they pay online. It captures the payment details, gets the transaction authorised, and confirms the result in seconds.
- What is the difference between a payment gateway and a payment aggregator?
- A gateway is the technology that captures and routes payments. An aggregator (like Razorpay, Cashfree or PayU) bundles the gateway with a shared merchant account and compliance, so a small business can start accepting payments without setting up its own merchant account. Most Indian SMBs use an aggregator.
- How much does a payment gateway cost in India?
- Most charge around 1.95 to 2% per successful transaction on cards and netbanking, with UPI often free or near-free for merchants under government policy, and usually no setup or annual fee on standard plans. Settlement to your bank typically takes one to three business days.
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