The Ultimate Guide to Custom Payment Gateway Integration for Indian SaaS Companies

By WovLab Team | March 11, 2026 | 3 min read

Why Off-the-Shelf Payment Solutions Might Be Holding Your SaaS Back

For many Indian SaaS startups, grabbing an off-the-shelf payment solution like Razorpay or Stripe feels like the quickest path to revenue. While these platforms are excellent for getting started, they can become a significant bottleneck as you scale. The core challenge lies in a lack of control and mounting costs that directly impact your profitability and user experience. A custom payment gateway integration for SaaS platforms is no longer a luxury for large enterprises; it's a strategic necessity for any ambitious company looking to optimize operations and own its customer journey from end to end.

The primary drawback of standard solutions is the Merchant Discount Rate (MDR). These fees, typically ranging from 1.75% to 3% plus GST, may seem small initially. However, as your transaction volume grows into crores, this can translate into lakhs of rupees in lost revenue every month. Furthermore, you're bound by their settlement cycles, which can be T+2 or T+3 days, negatively impacting your cash flow. Branding is another major concern; your users are often redirected to a third-party domain, breaking the seamless experience you’ve worked so hard to build. Custom solutions offer the power to negotiate lower rates directly with acquiring banks, implement T+0 or T+1 settlements, and keep your user within your branded ecosystem throughout the entire payment process.

Think about it: if your net margin is 15%, a 2% TDR is not just 2% of your revenue; it's over 13% of your profit. As you scale, this number becomes impossible to ignore.

Here’s a direct comparison highlighting the limitations: