Own Your Revenue: Custom Subscription Billing Platforms
Stop wrestling with rigid, expensive SaaS billing tools.
We build AI-enabled subscription platforms that fit your business model perfectly, cutting costs
and churn.
Stop Leaking Revenue. Start Owning Your Billing.
Are you tired of paying a tax on your own revenue? Off-the-shelf subscription platforms promise simplicity but deliver limitations, forcing your business into their box with ever-increasing fees. As you scale, you're hit with feature gaps, integration headaches, and a painful choice: compromise your pricing strategy or pay exorbitant costs. We offer a different path. We build bespoke, AI-powered subscription and recurring billing platforms that you own. Get the exact functionality you need—from complex proration and dunning to global tax compliance—without the recurring license fees. It's time to turn your billing system from a cost center into a strategic asset that fuels your growth.
Why Build a Custom Billing Platform with CIS?
An off-the-shelf tool gets you started. A custom platform gets you to market leadership. We provide the strategic advantages that translate directly to your bottom line.
Lower Total Cost of Ownership
Escape escalating monthly fees. Our one-time build cost is often recouped within 18-24 months compared to enterprise SaaS plans, turning a major OpEx into a valuable CapEx asset.
Unmatched Flexibility
Your pricing, your rules. Implement complex usage-based, tiered, or hybrid models that off-the-shelf tools can't handle, giving you a powerful competitive edge.
Own Your Asset
It's your platform. No vendor lock-in. You control the roadmap, the data, and the technology stack. Full IP rights transfer to you upon project completion.
AI-Powered Churn Reduction
Our systems use predictive analytics to identify at-risk accounts and optimize dunning strategies, recovering up to 15% more revenue from failed payments automatically.
Seamless Integrations
We connect your billing data where it matters most, creating a single source of truth with your CRM (Salesforce, HubSpot), ERP (NetSuite), and analytics tools.
Enterprise-Grade Security
With CMMI Level 5, SOC 2, and ISO 27001 certifications, we build highly secure, compliant systems you can trust with your most critical financial data.
Accelerated Development
Leverage our pre-built modules and AI-enabled development teams to launch your custom platform in weeks, not years, getting you to ROI faster.
Global-Ready from Day One
We handle multi-currency, international payment gateways, and complex tax rules (VAT, GST) so you can scale globally with confidence and without compliance headaches.
20+ Years of Expertise
We've been building complex financial and enterprise systems since 2003. We've seen it all and know how to avoid the pitfalls, de-risking your investment.
Our Comprehensive Billing Platform Services
Our subscription billing platform development is a comprehensive service, not a single product. We provide an end-to-end solution, from strategic architecture to post-launch support, ensuring your revenue engine is robust, scalable, and perfectly aligned with your business goals.
Subscription Lifecycle Management
We engineer the core logic for managing the entire customer lifecycle, from trial and activation to upgrades, downgrades, pauses, and cancellations.
- Automate key revenue operations.
- Ensure accurate billing under any scenario.
- Provide a seamless customer self-service experience.
Complex Pricing & Plan Modeling
Our architects design and implement any pricing model you can imagine: tiered, usage-based, metered, per-seat, freemium, and complex hybrids.
- Gain a competitive edge with flexible pricing.
- Maximize revenue per customer.
- Easily experiment with new pricing strategies.
Automated Invoicing & Proration
We build systems that generate clean, professional invoices automatically and handle complex proration calculations for mid-cycle changes with perfect accuracy.
- Eliminate manual billing errors.
- Improve cash flow with timely invoicing.
- Maintain customer trust with transparent billing.
Coupon & Promotion Engine
We build flexible engines that allow your marketing team to create and manage a wide range of promotions, discounts, and trial offers.
- Drive new customer acquisition.
- Incentivize upgrades and long-term commitments.
- Track the ROI of marketing campaigns.
AI-Powered Dunning & Revenue Recovery
We implement intelligent dunning workflows that use machine learning to customize retry schedules and communication based on customer behavior, significantly reducing involuntary churn.
- Recover lost revenue from failed payments.
- Reduce customer churn without manual effort.
- Protect customer relationships with smart communication.
Global Tax & Compliance Automation
Our solutions integrate with tax engines like Avalara or Vertex to automatically calculate and apply the correct sales tax, VAT, or GST based on customer location.
- Scale globally without compliance headaches.
- Reduce audit risk and ensure accuracy.
- Automate tax collection and remittance.
Revenue Recognition & Financial Reporting
We build dashboards and data models that simplify revenue recognition (ASC 606 / IFRS 15) and provide critical SaaS metrics like MRR, ARR, Churn, and LTV.
- Close your books faster and with more accuracy.
- Provide stakeholders with clear financial data.
- Make data-driven decisions to grow your business.
Usage & Metering Data Ingestion
For usage-based models, we build scalable pipelines to ingest, aggregate, and rate high-volume event data accurately for billing.
- Bill confidently for consumption and usage.
- Provide customers with transparent usage data.
- Handle massive data volumes without performance degradation.
Secure Payment Gateway Integration
We securely integrate with leading payment gateways like Stripe, Braintree, Adyen, and GoCardless, supporting credit cards, ACH, SEPA, and other global payment methods.
- Offer customers their preferred payment options.
- Ensure PCI compliance and data security.
- Optimize payment processing costs.
CRM & ERP Integration
We create a two-way sync between your billing platform and systems like Salesforce, HubSpot, NetSuite, or QuickBooks for a unified view of the customer.
- Empower sales and support with billing history.
- Automate critical finance workflows.
- Eliminate data silos and manual reconciliation.
Customer Self-Service Portal
We develop secure, intuitive portals where customers can manage their subscriptions, update payment methods, and view their invoice history without contacting support.
- Reduce support ticket volume significantly.
- Improve overall customer satisfaction (CSAT).
- Provide a modern, professional user experience.
Ongoing Support & Managed Services
Your billing system is mission-critical. We offer 24/7 support, proactive monitoring, and ongoing feature development to ensure it's always running and evolving.
- Get peace of mind with expert support on standby.
- Free your engineering team to focus on your product.
- Continuously improve your billing capabilities.
Real-World Results: Our Success Stories
We don't just build platforms; we build revenue engines that deliver measurable business outcomes. See how we've helped companies like yours take control of their billing.
From Revenue Leakage to Strategic Asset: A Custom Billing Platform for a High-Growth B2B SaaS
Industry: SaaS (Predictive Analytics)
Client Overview: A US-based, venture-backed SaaS company providing AI-powered location intelligence. They were experiencing rapid growth, but their homegrown billing system, built on basic Stripe APIs, was failing. It couldn't handle enterprise contracts, complex proration, or usage-based tiers, leading to manual workarounds, billing errors, and significant revenue leakage.
Key Challenges:
- Inability to automate complex, multi-year enterprise contracts with custom terms.
- No support for hybrid pricing (e.g., a base fee plus usage-based overages).
- Time-consuming manual processes for invoicing and revenue reconciliation.
- Lack of a self-service portal, leading to high support overhead.
Our Solution:
Our AI-Enabled Growth POD worked in 2-week sprints to deliver a robust, scalable solution. We architected a flexible plan and coupon management engine, built a scalable data pipeline for metered billing, integrated with Salesforce and NetSuite to automate the quote-to-cash process, and developed a secure customer self-service portal.
Global Scale & Compliance: Migrating a Pan-European EdTech Platform to a Modern Billing System
Industry: EdTech
Client Overview: A leading EdTech platform in the EMEA region with over 50,000 active subscribers across 15 countries. Their legacy billing system was a monolithic application that couldn't handle the complexities of European VAT, lacked proper dunning, and was a significant compliance risk.
Key Challenges:
- Incorrectly applying VAT across different EU member states.
- High churn rates due to a primitive, ineffective dunning process.
- Lack of secure, modern payment options like SEPA Direct Debit.
- Inability to generate financial reports compliant with IFRS 15.
Our Solution:
We executed a full-scale migration and built a new, compliant billing hub. This involved developing a secure data migration script, integrating with Adyen and Avalara for payments and tax, implementing an AI-powered dunning engine, and building a custom reporting module for IFRS 15 compliance.
Enabling Innovation: A Headless Billing Engine for a Disruptive MarTech Platform
Industry: Marketing Technology
Client Overview: A US-based MarTech company with a unique credit-based consumption model. No off-the-shelf billing platform could handle their "digital wallet" style of billing and the associated real-time credit decrementation. They needed a purely backend, API-driven solution.
Key Challenges:
- Managing a "digital wallet" for each customer with real-time credit transactions.
- Handling one-time credit pack purchases alongside auto-refill subscriptions.
- Providing a high-performance API for the core application to query balances.
- Ensuring the system was highly available to avoid impacting user experience.
Our Solution:
Our AI Excellence POD leveraged a serverless architecture on AWS to build a custom, high-performance headless billing engine. We designed a robust ledger database system, developed a secure REST API for all billing functions, and built the system using a microservices architecture for maximum scalability.
Your Path to Billing Autonomy: A Proven 4-Step Process
Building a mission-critical system requires a process built on clarity, collaboration, and control. We've refined our approach over 3000+ projects to de-risk development and ensure the final product is a perfect match for your business needs.
Phase 1: Discovery & Architecture
We don't write a line of code until we understand your business. Our architects conduct deep-dive workshops to produce a comprehensive technical specification and a clickable prototype, so you know exactly what you're getting.
Phase 2: Agile Development Sprints
Our AI-enabled POD builds your platform in iterative, two-week sprints. You get a dedicated PM, direct developer access, and a live demo after every sprint. This transparent process ensures no surprises.
Phase 3: Rigorous Testing & Data Migration
Our dedicated QA team performs end-to-end security, load, and financial reconciliation testing. If migrating, we conduct multiple dry runs to guarantee a flawless, zero-downtime cutover.
Phase 4: Deployment & Hypercare
We manage the full deployment to your production environment. Post-launch, we enter a "hypercare" period with the dev team on standby, then transition to a flexible, long-term support plan.
The Right Tool for the Job: Custom Platform vs. SaaS
Choosing your billing infrastructure is a major strategic decision. Here’s a transparent breakdown of how a custom-built platform compares to leading off-the-shelf SaaS solutions.
| Feature | Custom Platform (with CIS) | Off-the-Shelf SaaS Platform |
|---|---|---|
| Pricing Flexibility | Unlimited. Build any model: usage-based, hybrid, per-seat, etc. Perfect for unique or evolving business models. | Limited to pre-defined models. Complex needs require expensive top-tier plans or are simply not possible. |
| Total Cost of Ownership (TCO) | Higher upfront cost, but $0 in recurring license fees. TCO becomes significantly lower over 2-3 years. | Low upfront cost, but fees scale with your revenue (often as a percentage), becoming a major operational expense. |
| Integrations | Build deep, bespoke integrations with any tool in your stack (CRM, ERP, data warehouse). | Limited to standard, pre-built integrations. Custom connectors are often clunky or require a third-party tool. |
| Control & IP | You own the code, the data, and the roadmap. It's a valuable company asset. | Vendor lock-in. You are subject to their roadmap, price increases, and policy changes. |
| Competitive Advantage | Your billing system can become a differentiator, allowing for innovative pricing that competitors can't match. | You are using the same tools as everyone else, limiting your ability to innovate on the commercial model. |
| Time to Market | Slower initial launch (typically 3-4 months for an MVP). | Faster initial setup for basic needs (days or weeks). |
The Building Blocks of a World-Class Billing Platform
We build your platform using modern, scalable, and secure technologies. We are stack-agnostic and select the right tools for your specific needs, but this represents our core expertise.
What Our Clients Say
We're proud to be the trusted partner behind the revenue infrastructure of innovative companies worldwide.
"We were hitting the ceiling with Stripe Billing's flexibility. CIS built us a custom solution on top of Stripe that handles our complex, usage-based pricing flawlessly. Our engineering team is back to focusing on our core AI product."
"Migrating our 50,000 subscribers was a terrifying prospect. The CIS team managed the entire process with military precision. Zero downtime, zero data loss. Their expertise in revenue recognition and global VAT handling has saved my team hundreds of hours."
"As an early-stage startup, we couldn't afford Chargebee's enterprise plans. CIS built us a scalable MVP billing platform in just 14 weeks. The investment paid for itself within a year by allowing us to land our first enterprise clients."
The Team Behind Your Revenue Engine
Building a billing platform requires more than just developers. It requires architects who understand finance, security experts who understand compliance, and project managers who understand business outcomes. You get direct access to our senior talent.
Abhishek P.
Founder & CFO - Expert Enterprise Architecture Solutions
Amit A.
Founder & COO - Expert Enterprise Technology Solutions
Girish S.
Delivery Manager - Microsoft Certified Solutions Architect
Vishal N.
Manager, Certified Hyper Personalization Expert, Senior Data Scientist (AI/ML)
Your Questions, Answered
Here are some of the most common questions we get from leaders considering a custom billing platform.
Costs vary based on complexity, but a robust MVP typically ranges from $50,000 to $90,000. A full-scale enterprise platform with complex integrations can range from $100,000 to $250,000+. We provide a detailed, fixed-price quote after our initial discovery phase.
Security is our top priority. We build on top of PCI DSS Level 1 compliant payment gateways like Stripe or Adyen. This means sensitive credit card data is tokenized and never touches your servers, drastically reducing your compliance scope. We also follow DevSecOps best practices, including regular code scanning, penetration testing, and adherence to OWASP Top 10.
Our accelerated, AI-enabled process allows us to deliver an MVP in as little as 12-16 weeks. More complex builds can take 5-7 months. We work with you to define a phased rollout that delivers value as quickly as possible.
We offer comprehensive, flexible support and maintenance plans. These can include 24/7 monitoring and incident response, a dedicated support desk, and a retainer for ongoing feature enhancements and security updates. We become your long-term partner, ensuring your platform runs smoothly and evolves with your business.
Yes. We have extensive experience migrating subscription data from platforms like Chargebee, Recurly, Zuora, and other custom systems. We have a proven, multi-stage process to ensure data integrity and zero downtime during the transition.
You do. 100%. Upon final payment, all source code and intellectual property for the custom-developed platform are transferred to you. It becomes a valuable asset on your company's balance sheet.
Ready to Build a Billing Platform That's a Competitive Advantage?
Your pricing model is unique. Your billing platform should be too. Let's architect a solution that lowers your costs, reduces churn, and gives you the freedom to innovate. Schedule a free, no-obligation strategy call with our billing experts today.
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