Billing, subscriptions, payments, invoicing, and financial reporting — built into your product from day one, not bolted on at tax time.
A complete engagement — scoped to where you are and what you need.
Plans, trials, proration, and dunning that just work — on the rails Stripe already trusts.
Branded invoices, payment links, and automated reminders that get you paid faster.
Charge for what customers actually use, with metering wired into your product events.
Capture and categorize operating expenses automatically — ready for the books.
Live revenue, MRR, and P&L views so you always know where you stand.
Daily reconciliation and clean exports your accountant and tax prep will love.
You see value at every gate — and can stop, scale, or steer between phases.
We map your pricing, money flows, and reporting needs.
Stripe, your product events, and your books connected into one layer.
Billing, invoicing, dunning, and expense capture run themselves.
Dashboards and exports that make month-end and tax time painless.
Kairos runs subscription billing in production and our platforms collect payments and reconcile daily — the same FinStack we'd build into yours.
Book a 30-minute strategy call. We'll tell you honestly where AI will move the needle for your business — and where it won't.
Book a Strategy Call