2D Payment Gateway: Meaning, How It Works, Features & Alternatives
TL;DR - Summary
- What is a 2D payment gateway? - ‘2D’ commonly describes card payments sent for authorization without a separate 3D Secure cardholder authentication step.
- How does a 2D payment gateway work? - The gateway sends card or token details through a processor and card network to the issuer, which approves or declines the payment.
- What are the key features of a 2D payment gateway? - A non-3DS flow can offer card processing, an authorization response and transaction reports, but features vary by provider.
- What are the alternatives to a 2D payment gateway? - Consider 3D Secure for card checkout, eligible e-mandates for recurring payments, or a cross-border collection service for bank transfers.
What Is a 2D Payment Gateway?
A 2D payment gateway is an informal term for a card payment flow that does not use a separate 3D Secure (3DS) cardholder authentication step. A customer may enter a card number, expiry date and card verification value (CVV), but required fields vary. The issuer still decides whether to authorize the payment.
Merchants may choose this flow for a low-friction checkout, but rules and fraud risks vary. For domestic e-commerce in India, check the applicable authentication requirements.
An Indian SaaS business can use an eligible e-mandate for recurring card payments. Registration and the first payment need additional authentication; later payments may qualify for an exception. An e-mandate is a regulated framework, not simply a 2D gateway.
How Does a 2D Payment Gateway Work?
In a non-3DS flow, the customer provides card details or a token. The gateway sends the request to the processor without a separate 3DS authentication step.
- The customer enters card details on the merchant's checkout page.
- The gateway encrypts and transmits the data to the payment processor.
- The processor routes the request through the acquiring bank and card network, such as Visa or Mastercard.
- The card issuer checks the request and approves or declines it based on its rules, including available funds and risk checks.
- The approval or decline is returned to the merchant, often within seconds.
- The merchant confirms the order.
There is no separate 3DS challenge in this example. A checkout without an OTP is not necessarily non-3DS: some 3DS flows are frictionless.
Skipping a challenge may reduce friction but increase exposure to unauthorized payments. Use fraud checks and follow applicable rules.
What Is the Difference Between 2D and 3D Payment Gateways?
The difference between a 2D and 3D payment gateway is the use of 3D Secure. An informal 2D flow sends a card payment for authorization without 3DS. A 3DS flow exchanges information with the issuer to authenticate the cardholder; the issuer may approve a frictionless flow or request a challenge, such as an OTP or banking-app confirmation.
- What 3D means: 3-D Secure refers to three domains: the issuer domain, the acquirer domain and the interoperability domain that connects them. The issuing bank participates in both 2D and 3DS authorization.
- Who bears the liability: The merchant may bear a fraud dispute without 3DS. With 3DS, liability can shift for eligible transactions, depending on network rules, authentication results and dispute reason.
- Checkout friction: 3DS can work without a visible challenge, or the issuer may ask for an OTP or another verification step. It can reduce fraud risk, but it does not prevent every dispute.
- RBI requirement: Domestic digital payments generally require two distinct authentication factors, with specified exceptions. Where the rule applies, one factor must be dynamic for card-not-present payments. 3DS can support authentication, but it does not automatically ensure compliance.
| Factor | 2D Payment Gateway | 3D Payment Gateway |
|---|---|---|
| Authentication layers | Card details or token, without 3DS authentication | Card payment plus 3DS cardholder authentication |
| OTP / bank redirect | No 3DS challenge | May be frictionless or require a challenge |
| Checkout friction | No 3DS challenge | Varies: frictionless or challenged |
| Chargeback liability | Depends on dispute and network rules | May shift for eligible fraud disputes |
| Fraud protection | Depends on issuer and merchant controls | Adds cardholder authentication |
| International support | Depends on provider and countries supported | Depends on provider and countries supported |
| India compliance (RBI) | Insufficient where an additional factor is required | Must meet applicable authentication rules |
Removing an additional authentication step can make checkout quicker, but it also changes the merchant's exposure to fraud. Businesses should assess the issuer's risk checks, fraud controls and chargeback terms before choosing a non-3DS payment flow.
Key Features of a 2D Payment Gateway
A 2D flow sends card or token details for authorization without a separate 3DS step. Providers may also offer transaction reporting and fraud tools; features and response times vary.
- Card payment processing: A gateway accepts supported credit or debit cards, subject to the issuer's decision. Required fields vary.
- Customer authentication requirements: A non-3DS flow does not use 3DS cardholder authentication. It is sometimes called a gateway without OTP, but not every payment without an OTP skips 3DS.
- Payment authorization: The request passes through the acquirer and card network to the issuer, which approves or declines it.
- Transaction tracking and reporting: Many providers offer dashboards. Check available statuses, exports and updates before signing up.
✅ PRO TIP
Check whether the gateway exports transaction-level reports. These can help reconcile payments and GST records.
What Are the Challenges of Using a 2D Payment Gateway?
The main risks are unauthorized payments, possible chargeback losses and non-compliance if a transaction skips authentication required in India. The right controls depend on the transaction and provider.
- Higher fraud risk: Stolen card details can be used for unauthorized payments. Risk checks can help, but do not guarantee detection.
- Chargeback liability: The merchant may bear a disputed payment and costs, depending on the evidence, dispute reason, network and acquirer rules.
- Regulatory requirements in India: A card-data-only flow generally does not meet the domestic two-factor requirement unless an exception applies.
- High-value transactions: A larger unauthorized payment can mean a larger loss. Assess fraud controls and dispute terms.
- Cross-border considerations: Some gateways accept eligible international cards; bank-transfer services use a different route. Check currencies, fees, settlement and records.
If your goal is to receive payments from foreign clients into your Indian bank account, Skydo offers local receiving account details and a free Foreign Inward Remittance Advice (FIRA) after settlement, subject to eligibility and verification.
⚠️ COMMON MISCONCEPTION
A checkout without an OTP is not always a 2D flow. 3D Secure can also authenticate a payment without a visible challenge, depending on the issuer and applicable rules.
When Should You Use a 2D vs 3D Payment Gateway?
Choose a flow that meets the rules for your transactions. Weigh checkout convenience against fraud controls, dispute terms and payment methods.
- Domestic e-commerce checkout: Choose a provider that supports the required authentication. 3DS can help, but check the full flow against RBI requirements. Fraud liability depends on network and acquirer rules.
- Recurring SaaS or subscription billing for Indian customers: Registration and the first transaction require additional authentication. Later recurring payments up to ₹15,000 may proceed without it, subject to the framework and advance notice. Higher payments generally require it; the limit is ₹1 lakh for insurance premiums, mutual fund subscriptions and credit-card bills.
- Receiving payment from a foreign client: Some gateways support receiving foreign currency from overseas clients using eligible international cards. A cross-border bank-transfer service is another option. Confirm the available currencies, fees, settlement and documents for your business.
How to Choose a Payment Gateway for Your Business
Compare security, payment methods and currencies, fees, integration, settlement times and chargeback management.
- Security and fraud protection: Assess 3D Secure, tokenization and encryption. Check applicable authentication rules and exceptions.
- Supported payment methods and currencies: Check the payment methods your customers use and whether the provider accepts your international customers' currencies and settles in INR.
- Transaction fees: Check setup, monthly, transaction and currency conversion fees, including minimum charges.
- Integration options: Confirm the gateway works with your website, app or billing platform through APIs, plugins or hosted pages.
- Settlement timelines: Ask how many business days settlement takes and whether the timeline is guaranteed or indicative.
- Chargeback management: Ask about dispute procedures, required documents and alerts for suspicious transactions.
✅ PRO TIP
Ask the provider for a full fee schedule in writing before signing up.
Best Alternatives to 2D Payment Gateways
Compare 3D Secure for card checkout, eligible e-mandates for recurring payments and cross-border collection services for bank transfers.
- 3D Secure gateways (for domestic card payments): 3DS shares information with the issuer and may request a challenge. It can support required authentication and shift liability for eligible fraud disputes, subject to applicable rules.
- Cross-border payment platforms (for receiving international payments): Indian freelancers, exporters, and agencies can compare bank-transfer services with international card gateways. Check eligibility, currencies, fees, settlement and records.
- E-mandate / auto-debit frameworks (for recurring billing): Registration and the first payment require additional authentication. Qualifying later payments can proceed without it within the applicable limits and conditions.
- Where Skydo fits: Skydo offers receiving account details for eligible cross-border bank transfers, rather than a 2D or 3DS card checkout. A free FIRA is available after settlement.
How Does Skydo Help Indian Businesses Receive International Payments?
Indian freelancers, agencies and exporters can compare international card gateways with bank-transfer services. The right choice depends on customer preferences, eligibility and total cost.
Skydo is an RBI-authorised payment aggregator. It helps Indian businesses receive international payments through local receiving details and provides a free FIRA after settlement. This bank-transfer service is an alternative to card checkout.
- Local receiving details: Eligible businesses can receive payments in supported currencies, including USD, GBP, EUR, SGD, AUD, CAD and AED. Availability depends on the account and route.
- Fees and exchange rates: For standard transfers, published fees are $19 for payments up to $2,000, $29 for $2,001–$10,000 and 0.3% above $10,000, plus GST on the fee. Skydo advertises no forex markup. Other products and routes may have different pricing, and SWIFT intermediaries may deduct charges.
- Free FIRA after settlement: Skydo provides a free FIRA for each settled payment. Keep it with your records and check which bank documents your tax filing requires; a FIRA is not a FIRC.
- eBRC and EDPMS assistance: Skydo can help eligible exporters match remittances to export records and generate electronic Bank Realisation Certificates (eBRCs). Exporters review and self-certify the details; EDPMS reconciliation and closure are separate bank processes.
- Settlement timelines: Skydo's terms describe commercially reasonable efforts to credit eligible export payments in T+1 to T+3 business days after screening, depending on the currency, route and checks.
- Setup and support: Sign-up can take minutes; approval depends on verification. Skydo lists support by phone, email and chat.
Is a 2D payment gateway legal in India?
India generally requires two-factor authentication for domestic digital payments, with specific exceptions. A card-data-only flow is not compliant where an additional factor is required. Check your transaction and provider's setup.
What does "2D payment gateway without OTP" mean?
Can a 2D payment gateway be used for international payments from India?
Who bears the chargeback liability in a 2D gateway transaction?
What is the difference between 2D and 3D payment gateways in simple terms?
What is a 2D payment gateway sites list?
Do I need a FIRC or FIRA if I use a payment gateway for international payments?
What is the fastest way for an Indian freelancer to receive international payments?
