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Guides for fintech builders and API partners

Practical guides on building with payment APIs in India: who holds the licence, what the rules say, and the engineering that stops money going missing. Guides for retailers and distributors are on the payonclick.in blog.

Guide

PPI wallet transfer vs DMT money transfer

PPI wallet transfer and DMT compared for retail networks: who holds the KYC, RBI limits, the counter flow and the engineering each one needs.

14 Oct 2026 · Read article →
Guide

Micro ATM Android SDK integration: a developer guide

A step-by-step Micro ATM Android SDK guide: server-created transactions, permissions, launching the SDK, reporting results and handling pending outcomes.

14 Oct 2026 · Read article →
Guide

AEPS cash deposit API: how it works for your outlets

AEPS cash deposit explained for API partners: outlet onboarding, the debit-first money flow, limits, pending deposits and how to reconcile them.

14 Oct 2026 · Read article →
Guide

White-label fintech software: the 12 questions to ask before you sign

A buyer's checklist for white-label fintech software, a licence map, 12 vendor questions, and red flags to watch for.

11 Sep 2026 · Read article →
Guide

UPI cash withdrawal at BC points: a platform guide

UPI cash withdrawal at BC touchpoints for platforms: reported limits, the dynamic QR flow, verification, blackout hours and merchant checks.

11 Sep 2026 · Read article →
Guide

Recharge API Pending Status, Callbacks and Refunds Done Right

How to define recharge status states, secure callbacks with per-transaction tokens, poll safely and refund only after confirmed failure.

11 Sep 2026 · Read article →
Guide

RBI's Payment Aggregator Directions 2025, Explained

PA-P, PA-O, PA-CB, net worth, escrow debit limits and small-merchant KYC under RBI's 2025 Payment Aggregator Directions.

11 Sep 2026 · Read article →
Guide

Idempotency and reconciliation: the engineering that stops money going missing

Idempotency, polling, refunds, ledgers and 3-way reconciliation explained, with how Payonclick's payment APIs implement each one.

11 Sep 2026 · Read article →
Guide

Dynamic vs static UPI QR: what actually changes for your reconciliation

Dynamic vs static UPI QR for B2B collection, reconciliation, UPI limits since September 2025, and when payment aggregator rules apply.

11 Sep 2026 · Read article →
Guide

DMT API vs Payout API: Whose Money Is Moving?

DMT vs payout API compared: whose money moves, KYC, limits, rails and the regulated party, plus when each fits.

11 Sep 2026 · Read article →
Guide

DMT API and RBI's Cash Remittance Rules

RBI's DMT framework explained for platforms: remitter registration, AFA on every transaction, the cash-remittance identifier and 2011 limits.

11 Sep 2026 · Read article →
Guide

CMS cash collection explained: three different things, one acronym

CMS in fintech means agent cash collection, Bharat Connect loan repayment or NACH. This guide separates them and the RBI rules for each.

11 Sep 2026 · Read article →
Guide

Offering Bharat Connect in your app: agent institution, agent or API partner?

Agent institution, agent or API partner, the three ways to offer Bharat Connect bill payments in your app, under RBI's BBPS Master Direction.

11 Sep 2026 · Read article →
Guide

Starting a fintech API reseller business: what you can resell

Fintech API reselling in India: business models, what each regulated service allows, and compliance and technical checklists.

11 Sep 2026 · Read article →
Guide

AePS Integration Checklist: Roles, KYC and Devices

AePS roles, RBI's 2025-26 operator due-diligence rules, sub-agent KYC, dormancy, L1 devices and reconciliation, for platform builders.

11 Sep 2026 · Read article →

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