SaaS subscriptions, without handing over the customer Subscription billing is mostly edge cases: the mid-cycle upgrade, the failed renewal, the refund of a partial period. Those are the parts worth not writing yourself.

From 3.9% all in · No monthly fee · Test mode is open today

What you actually need

The boring parts are the whole job. None of them are interesting until one is wrong.

Plan changes with proration — computed in one rounding path, golden-tested, not re-derived per code path.
Cancellations, immediate or at period end, with the entitlement following.
Failed renewals that retry and communicate rather than silently churning.
A customer billing portal so plan changes and invoice history are not your inbox.
Signed webhooks with retries, replay protection and manual resend, so your app reacts reliably to state it did not initiate.
Discounts and affiliates attached to the subscription rather than bolted beside it.

The difference

You stay the seller. Which is the part most subscription platforms take from you.

	Merchant-of-record platforms	CANDI
Who is the seller	The platform. Their name is on the charge and the invoice.	You. Your name is on the charge.
Whose payment account	Theirs. Your customers pay them.	Yours. You connect your own account.
Where the money lands	With them, then paid out to you on their schedule.	In your account, on your own payout schedule. CANDI never holds it.
Sales tax / VAT	They calculate, collect and remit it.	Yours. CANDI does not calculate, collect, remit or file it.
Who verifies you	They do, as part of onboarding.	Your payment provider does. Not us.
Chargebacks	Theirs to fight, under their terms.	Yours, on your own account.

This is a structural comparison of the two billing models, not a claim about any one vendor. Business models change — check the vendor's own pricing and terms before you decide.

Before you build

What is live today. Test mode is the whole API.

Where CANDI actually is today. Live payments are not switched on yet, so nobody is taking live money through CANDI. Test mode is fully open — its own database, its own keys, the whole API, and Stripe onboarding, so you can connect a Stripe account and build the entire integration today. Stripe hosts the verification; CANDI never sees your identity documents.

Also billable

The other three. Same API — combining them is one integration, not four.

Model your plans in test mode. The whole subscription API, today.

Start in test mode Read the docs

From 3.9% all in · No monthly fee · Test mode is open today

Questions

Answered plainly. Including the ones where the answer is no.

Does CANDI handle proration on mid-cycle upgrades?

Yes, in one shared rounding path used everywhere money is computed, so a proration and an invoice total cannot disagree.

Where does subscription revenue land?

In your own payment account. CANDI never holds it and there is no CANDI payout schedule to wait on.

Is there a customer-facing portal?

Yes — a customer billing portal for plan changes and invoice history.

Can I run live subscriptions today?

Not yet. Live payments are not switched on; test mode is open, Stripe onboarding included.