Skip to content
Nexta Web Solution
Software development & IT

Payment gateway integration that your accountant can trust

Customers pay by UPI, card or net banking, the order updates by itself, and the money in your bank matches the invoices. We build the parts most integrations skip: webhooks, refunds and reconciliation.

  • Integrations into an existing site or app are quoted per project, fixed in writing within 24 hours of a free call.
  • A real person on WhatsApp within 15 minutes, Mon–Sat 10 am–7 pm IST, in Bengali, Hindi or English.
  • You own the work. Code, files, accounts and data stay in your name, with an NDA on request.

Updated by the Nexta Web Solution team

Free consultation

Get a price for payment gateway integration

Free call, then a fixed quote on WhatsApp. No obligation.

  • 5+ years experience
  • 10,000+ clients
  • MSME registered
  • ISO certified
  • PCI DSS certified
  • NIXI accredited

A Nexta project advisor replies within 15 minutes, Mon–Sat 10 am–7 pm IST. Outside these hours, by 10:30 am the next working day.

We use your name and number only to reply about your enquiry. See our Privacy Policy to withdraw consent or raise a complaint.

Four quick taps help us send the right price.

  • 5+ years experience · 10,000+ clients

    Businesses in India, the UK, the Gulf and beyond

  • MSME · ISO · PCI DSS · NIXI

    Registered, certified and accredited. See details

  • Registered Pvt Ltd company

    CIN U62099WB2024PTC267968 · 2 offices in Hooghly

  • A real person on WhatsApp

    Reply within 15 minutes in office hours

Payment gateway integration at Nexta, in short

Payment gateway integration services connect your website, app or software to a gateway such as Razorpay, Cashfree, PhonePe, Stripe or PayPal, so customers can pay by UPI, card, net banking or wallet and every payment lands correctly in your orders and books. Nexta builds the checkout, webhooks, refunds and reconciliation, keeps card data off your servers and tests everything in sandbox first. Most jobs take one to three weeks, on a fixed written quote.

Program code on a computer monitor
PricingFixed quote in 24 hours
5+ years · 10,000+ clients

Where payments usually go wrong

“"Money got deducted but the order is not showing"”

The customer paid, the bank SMS arrived, but your system still says pending. Usually the integration trusts the browser coming back to your site, and when the customer closes the tab or the network drops, the order never gets marked paid.

“"Settlement amount never matches our sales report"”

The gateway pays out in batches, minus fees and GST on those fees, sometimes a day or two later. Your accountant ends up matching UPI reference numbers in Excel every month end.

“"Refunds are done from the dashboard and nobody updates the order"”

Staff refund from the gateway panel, the order still shows paid, stock is not returned and the invoice is not cancelled. Two systems, two different truths.

“"The developer left and we do not even have the API keys"”

The gateway account was opened on someone else's email, the keys sit in a file nobody can find, and the plugin has not been updated in two years.

“"Do we need PCI certification just to take cards?"”

Nobody has explained what your responsibility actually is, so you either worry too much or not at all. Both are risky.

What our payment gateway integration services cover

Checkout built for Indian payers

UPI intent on mobile so the customer jumps straight to GPay, PhonePe or Paytm, QR on desktop, cards, net banking, wallets and EMI where your gateway offers them. We keep the payment page fast on cheap Android phones and slow 4G, because that is where most drop-offs happen.

Webhooks as the source of truth

Your server listens to the gateway's webhooks, checks the signature, and marks the order paid only after the gateway confirms it. Each event is processed once even if the gateway retries, so a single payment never creates two orders or two invoices.

Refunds, partial refunds and cancellations

Refunds start from your admin panel, not the gateway dashboard, so the order, stock and GST credit note stay in step. Partial refunds for one item in a multi-item order are handled properly, not by hand.

Daily reconciliation

We pull the gateway's settlement report through its API and match each payment to an order, separating gateway fees and the GST on them. You get a clean export for Tally or your accounting tool, and a list of anything that does not match.

Card data kept off your servers

We use the gateway's hosted checkout or its secure fields, so full card numbers never touch your server. Saved cards use the gateway's tokens, as RBI rules require, not anything stored in your database.

International payments

For clients abroad we set up Stripe, PayPal or your Indian gateway's international option, with the currency shown clearly and the export paperwork your CA will ask for kept with each payment.

Rescue of broken integrations

If payments are already failing or orders go missing, we audit the existing code and logs first, fix the cause, then replay missed webhooks so old orders are corrected.

From gateway account to first settlement

  1. 1Day 1-2

    Free call and gateway choice

    We look at your platform, payment volume and customers, then suggest a gateway based on settlement time, UPI success, support and features you need. You get a fixed written quote within 24 hours.

  2. 2Week 1

    Gateway account and KYC

    You open the gateway account in your company's name and submit KYC; we help with the website requirements gateways check, such as policy pages and contact details. Approval time depends on the gateway, not on us.

  3. 3Week 1-2

    Sandbox build

    Checkout, webhooks, refunds and reconciliation are built against the test environment. We simulate failures on purpose: closed tabs, timeouts, duplicate webhooks and refunds on old orders.

  4. 4Week 2-3

    Live test with small payments

    After live keys are issued, we run real low-value payments across UPI, card and net banking, refund them, and check the settlement in your bank.

  5. 5After launch

    Handover and watch

    You get documentation, admin access and a short screen-share training. We watch the first live settlements with you and fix anything that does not reconcile.

What you get

  • Gateway integrated on your website, app or software in your own gateway account
  • Signed webhook endpoint with retry-safe, once-only processing
  • Payment status page and WhatsApp or email confirmation to the customer
  • Refund and partial refund flow from your admin panel
  • Daily reconciliation report with fees and GST on fees separated
  • Export for Tally or your accounting software
  • Test plan with results from sandbox and live small-value payments
  • Written note on your PCI DSS scope and which self-assessment form likely applies
  • Documentation of keys, webhook URLs and settings, handed over to you

Pricing

Fixed quote within 24 hours

Integrations into an existing site or app are quoted per project, fixed in writing within 24 hours of a free call. When payments are part of a larger custom software build, those builds start from ₹1,50,000. Gateway transaction charges are paid by you directly to the gateway and are never marked up by us.

Get my quote Book a free call

Every price shows GST and the total. Nothing is added after you enquire.

Why businesses hand payments to us

We are PCI DSS certified ourselves

Nexta holds PCI DSS certification as a company, so we work to card-industry security practice by habit, not by reading it the night before. That does not make your business compliant by default, and we tell you plainly what part stays your responsibility.

Server side is in-house

We run our own hosting brand, TPHOST, so we also secure the server your checkout talks to: TLS, firewall, patching and log retention. No passing the blame between a developer and a hosting company.

We build the boring parts

Most payment bugs are not in the payment button. They live in webhooks, refunds and month-end matching, so that is where most of our effort goes.

You own every account

The gateway account, API keys, code and domain are in your name. If you change developers later, you lose nothing and need nobody's permission.

Is this right for you?

A good fit if

  • Businesses with a custom website, app or software that needs UPI and card payments
  • Stores where payments succeed but orders go missing or stay pending
  • Companies whose finance team spends days matching settlements to invoices
  • Indian businesses billing clients in the UK, Gulf, Australia or North America

Probably not the right fit if

  • A standard Shopify store: Shopify's own payment setup usually covers you without custom work
  • Someone wanting to store full card numbers to charge later: this is not allowed, and we will suggest tokens or mandates instead
  • Businesses the gateway will not onboard, such as categories its policy restricts

Payment gateway integration: frequently asked questions

Something else? Call +91 7500-4300-91 or WhatsApp us.

It depends on what the payment has to touch, not on the gateway. Adding a gateway to a standard WooCommerce store is small work; connecting it to custom software with webhooks, refunds, invoices and reconciliation takes more. We send a fixed written quote within 24 hours of a free call. The gateway's own per-transaction charges are separate and agreed between you and the gateway.

There is no single best one. Razorpay, Cashfree, PhonePe and PayU all handle UPI, cards and net banking well. We compare settlement speed, UPI success rates in your category, support quality, international payments and the fees you can negotiate, then recommend one. We have no commission arrangement that pushes us towards any gateway.

Usually because the integration waits for the customer's browser to return to your site. If the tab is closed or the network drops, your system never hears about the payment. The fix is to treat the gateway's signed webhook as the final word and to run a periodic status check for anything still pending.

Every business that accepts cards has some PCI DSS responsibility, but how much depends on the setup. If customers are fully redirected to the gateway's page, your scope is small. If the gateway's form is embedded in your page, the PCI Security Standards Council now also expects you to protect that page from malicious scripts. We set it up to keep your scope small and explain what remains.

Not by storing card numbers yourself. Since RBI's card-on-file rules took effect in 2022, merchants and their developers cannot keep actual card data. Saved cards work through tokens issued via the card network and your gateway, and we integrate those so returning customers still get a quick checkout.

Most integrations take one to three weeks of our work. The part we cannot control is the gateway's KYC and live-key approval, which depends on your documents and the gateway's review queue. We start building in the sandbox while KYC is in progress, so the waiting time is not wasted.

Yes, though it is a separate piece of work because mandates, renewal failures and notifications need their own logic. RBI's current e-mandate framework sets limits on auto-debits without extra authentication and requires the customer to be notified before each debit. See our subscription management software page for how we handle it.

Yes. We work with clients in the UK, Gulf, Australia and North America and integrate Stripe, PayPal and other gateways that operate in your country. Quotes can be given in USD, GBP or AED, and we work in your time zone for the go-live day.

Sources: RBI: Restriction on storage of actual card data (card-on-file), 24 June 2022 · PCI SSC: FAQ clarifies new SAQ A eligibility criteria for e-commerce merchants · RBI: Digital Payments E-mandate Framework, 2026

Related services

Subscription management software

Plans, UPI AutoPay and card mandates, GST invoices and failed-payment follow-up, built around how your customers actually pay. You stop sending payment links on WhatsApp one by one.

Read more

E-commerce website development

Shopify and WooCommerce stores with UPI, COD, shipping and GST invoices.

Read more

Billing software development

GST billing software development means building invoicing and POS software around your business: counter billing, GST invoices, e-invoice and e-way bill generation, branch reports and Tally export.

Read more

WooCommerce development

Custom features, speed work and repairs for WooCommerce stores that have outgrown their plugins. We fix the store you have instead of pushing you to rebuild it.

Read more

Server security hardening

Server hardening services reduce the ways a server can be attacked by tightening its configuration.

Read more

Payment gateway integration for businesses in Hooghly, Kolkata and worldwide

We are based in Hooghly, with offices in Ramanathpur and near the LIC Office in Chanditala. We work with businesses in Chanditala, Serampore, Chinsurah, Chandannagar, Uttarpara, Arambagh, Howrah, Kolkata and the rest of West Bengal, and we are happy to meet at our office or yours.

Talk to us in Bengali, Hindi or English, on WhatsApp or at our office.

Our Hooghly and Kolkata page

Head office

Ramanathpur, Hooghly

Plot No-229, Ramanathpur
Hooghly, West Bengal 712704
India

Mon–Sat, 10:00 AM – 7:00 PM IST

Directions

Branch office

Chanditala, Hooghly

Near LIC Office, Chanditala
Hooghly, West Bengal 712702
India

Mon–Sat, 10:00 AM – 7:00 PM IST

Directions

Talk to us about payment gateway integration

Tell us what you need in two minutes. Reply within 15 minutes, Mon–Sat 10 am–7 pm IST.

Get a quote Book a call