# Requirement change

Marketing wants a free-trial signup flow. We need a second way to start a subscription that gives
the customer their whole first calendar month for nothing, whatever plan they pick.

**What "free" means, exactly, because it has caught people out before:**

- It is the **whole calendar month** they joined in, not a rolling 30 days. Someone who joins on
  the 28th gets the rest of that month free too — the same as someone who joined on the 1st. There
  is no day-level proration of the free month; it is simply zero.
- **Every month after that is billed exactly as it already is today** — the full rate, or
  prorated, according to whatever already happens for that account, including a plan change.
- **The existing way of starting a subscription is untouched** and never grants a trial.
- A trial is not a discount and not a coupon — it does not reduce any later month's price. It is
  one free month, once, at the start.
- The plan chosen for the trial is billed at that plan's normal rate from the second month
  onward — a customer who trials PREMIUM is not quietly downgraded when the free month ends.
