Most billing systems work fine until your product pricing gets even slightly complicated.
A flat monthly subscription is easy enough. But the moment you add usage-based pricing, credits, feature access, country-specific pricing, tax handling, or plan changes, things start to break down fast.
That is the problem we kept seeing again and again.
Where this started
I’m Sachin. Before Kelviq, I built ParityDeals, a product focused on price localization and PPP pricing. It helped businesses show better prices based on customer location, with built-in VPN and proxy protection.
As ParityDeals grew, we got a closer look at how internet businesses were handling billing behind the scenes. And we kept seeing the same pattern.
Teams were stitching together too many tools just to sell online. One product for payments, another for tax, another for subscriptions, custom code for feature access, and a growing mess of webhooks to keep everything in sync. Even small changes like moving a feature to another plan or bumping a usage limit often meant engineering work and a deploy.
That did not feel right to us.
The problem with most billing setups
The issue is not that teams cannot build billing themselves. They can. The issue is that they end up rebuilding the same plumbing over and over.
A typical setup looks something like this:
- Stripe for payments
- A separate tax tool
- Webhooks to track subscription changes
- A mirrored database to maintain billing state
- Custom code for feature gating
- Manual work for overrides, migrations, and edge cases
It works at first. But over time it becomes fragile. A failed webhook can break access. A pricing change requires a deploy. A new usage model means more custom logic. And when you start selling globally, tax and compliance add a whole new layer of work.
Kelviq did not start as a big idea on a whiteboard. It came from years of seeing these same pain points up close, and genuinley believing there had to be a better way.
Why this matters even more for AI products
This problem gets much more painful when you are selling AI products or usage-based software.
When your costs are tied to tokens, API calls, compute, storage, or credits, billing is not just about reporting revenue. It affects your margins directly. If you are not metering usage properly, enforcing limits correctly, or connecting billing and access together, you can lose real money while the product is still being used.
That is one of the main reasons we built Kelviq the way we did. Billing and access control should work together, not as two separate systems you have to wire up yourself.
What Kelviq is
Kelviq is a full Merchant of Record platform for SaaS, AI products, and digital goods.
The core idea is simple: billing should not be deeply coupled to your app. Once you integrate, your team should be able to change pricing, limits, and feature access from a dashboard without touching code or waiting on a deploy.
As your Merchant of Record, we handle global tax, VAT, GST, fraud, and compliance. You can sell in 100+ countries without registering for a foreign tax ID.
With Kelviq you can:
- Launch flat-rate, seat-based, usage-based, credit-based, volume, tiered, or hybrid pricing
- Meter usage in real time and set hard or soft caps with overages
- Control feature access from your app with a simple SDK call
- Manage upgrades, downgrades, grandfathering, and custom overrides from a dashboard
- Update plans and entitlements without redeploying
- Localize pricing across 135+ currencies with VPN and fraud protection built in
- Deliver digital products and generate license keys automatically
No webhook hell. No shadow database. No hardcoded billing logic scattered across your codebase.
Built on everything we learned from ParityDeals
A lot of what we learned from running ParityDeals made its way into Kelviq. That means Kelviq includes all core ParityDeals features out of the box:
- PPP pricing
- VPN and proxy protection
- Country-based pricing controls
- Country-based coupon restrictions
- All other localization settings
But Kelviq goes much further by adding the full billing layer around them.
Who Kelviq is for
Developers who want to integrate billing without spending weeks on webhooks, usage tracking, and hardcoded feature flags.
Product managers who want to own pricing and run experiments without waiting on engineering every time.
Founders who want to sell globally from day one without becoming a tax expert or stitching together five different tools.
Digital creators who want to sell files, software, or courses with automatic delivery, license key generation, and tax handled for them.
Why we think we are the right team to build this
We did not start from scratch. Five years in this space, working closely with payment providers, and hundreds of conversations with founders gave us a clear picture of what actually breaks and why. ParityDeals taught us a lot about localization, fraud, and how founders think about pricing. Kelviq is built on top of all of that.
The beta has been live for a few weeks. Some ParityDeals users have already moved over and are running in production. Its stable, its full-featured, and its built by people who have spent years living inside this problem.
We’re not trying to be just another billing tool. We want Kelviq to be the last billing integration you ever have to build.
If you are building SaaS or an AI product and any of this sounds familiar, we would love to talk. Reach out or book a demo and we will walk you through it ourselves.
Sachin Founder, Kelviq
