Payments & Subscriptions

Payments that never
lose a rupee — or a dollar.

Failed webhooks, duplicate charges, stuck mandates — payments are where apps silently bleed money. We run this exact stack in 3 live products, so your integration ships right the first time.

Live in 3 production apps Zero plaintext bank data stored Idempotent, HMAC-verified webhooks
payments · live
What you get

The full money stack, wired correctly

Every item below is running in production right now — in our own apps, processing real money daily.

💳

Checkout Integration

Web and app checkout for Cashfree, Razorpay or Stripe — smooth, branded, tested.

  • Cards, UPI, netbanking, wallets
  • Flutter + web SDKs
  • Sandbox + live verification
🔁

Subscriptions & Autopay

Recurring revenue that actually recurs — mandates, retries and lifecycle handled.

  • UPI / eNACH / card mandates
  • First-charge & retry logic
  • Upgrade, pause & cancel flows
🪝

Bulletproof Webhooks

The part everyone gets wrong. HMAC-verified, idempotent, retry-safe.

  • Signature verification
  • Duplicate-event protection
  • Dead-letter handling & alerts
🏦

Payouts & Settlements

Pay vendors, partners or drivers — with token-only bank storage.

  • Bank & UPI payouts
  • Beneficiary verification
  • Zero plaintext account data
🧾

Invoices & Reconciliation

Every transaction accounted for — PDFs, reports and books that match.

  • Automated PDF invoices
  • Refunds & disputes
  • Settlement reconciliation
🛡️

Payment Security

PCI-conscious architecture with audit-grade logging.

  • Tokenized storage only
  • Rate limiting & fraud checks
  • Audit trails
Why Technosquare

We debug payment edge cases before they reach you

First-charge timing bugs, timezone mandate failures, webhook race conditions — we hit them all on our own products first. Your build inherits the fixes.

🏭01

Running in production

3 live apps process subscriptions, autopay and payouts on this stack daily.

🔍02

Edge cases pre-solved

IST timestamps, mandate retries, webhook ordering — already handled.

🔒03

Bank-data discipline

Cashfree-token-only storage; no plaintext accounts or IFSC ever.

🧾04

Fixed quote, fast delivery

Most integrations ship in days, not months — priced before we start.

Engagement options

Start small. Scale when it works.

No lock-ins, no black-box retainers. You get a fixed quote within 24 hours of a free call.

Checkout

Start accepting payments
  • One gateway (Cashfree/Razorpay/Stripe)
  • Web or app checkout
  • Verified webhooks
  • Test + live verification
  • 30 days support
⏱ typically 3–5 days
Get a fixed quote
Most chosen

Subscriptions

Recurring revenue, done right
  • Autopay mandates (UPI/eNACH/card)
  • Full lifecycle: retries, upgrades, cancellation
  • Idempotent webhook system
  • Automated PDF invoices
  • 60 days support
⏱ typically 1–2 weeks
Get a fixed quote

Full Money Stack

Marketplace-grade payments
  • Checkout + subscriptions + payouts
  • Wallets, refunds & reconciliation
  • Security review of payment flows
  • Monitoring & alerting
  • Priority support
⏱ typically 2–4 weeks
Get a fixed quote
FAQ

The questions every smart client asks

Have another question? Ask us directly on WhatsApp — the founder replies personally.

Cashfree, Razorpay and Stripe are our production specialties; we also work with PayPal, PhonePe and others. We’ll recommend the right one for your market, fees and features — honestly.

Yes — this is one of our most common projects. Missing webhooks, duplicate charges, stuck subscriptions: we audit the flow, fix the root cause, and verify against live traffic.

Yes — including the messy parts: first-charge timing, mandate registration failures, retry windows and bank-specific quirks. We run these in production ourselves.

Token-only storage (no plaintext account numbers or card data), HMAC-verified webhooks, rate limiting and audit logs. The same discipline we apply to our own products handling real money.

Basic checkout: 3–5 days. Subscriptions with full lifecycle: 1–2 weeks. A complete marketplace money stack: 2–4 weeks. Fixed timeline in your quote.

Yes — PHP, Flutter, WordPress, custom stacks. We integrate into what you already run; no rebuild needed.

Payments and automation live next door — webhooks, reconciliation and follow-ups are exactly where AI automation earns its keep.

Related: AI Automation  ·  Security Audit  ·  App Development  ·  UPI Autopay Edge Cases

Every failed payment is a customer you already won — lost.

Free 30-minute consultation. Honest scope, timeline and price — even if the honest answer is "don't build this yet."