# Requirement change

Sales wants an annual plan: pay for a whole year in one go, at a discount against paying monthly
twelve times. We need a second way to start a subscription for this.

**The numbers, so nobody has to guess them:**

The discount is **15% off twelve months at the plan's standard monthly price**, rounded the same
way every other amount in this system rounds — half up.

| plan | 12 months at the monthly price | 15% off, rounded half up |
|---|---|---|
| BASIC | $119.88 | **$101.90** |
| STANDARD | $239.88 | **$203.90** |
| PREMIUM | $359.88 | **$305.90** |

**How the billing lands, month by month, because this is the part people get wrong:** the whole
discounted amount is charged in the calendar month the customer signs up in, and the following
eleven months cost nothing more — they already paid for them. After twelve months, it renews: the
thirteenth month is charged again, at the same rate, and the cycle repeats. There is no day-level
proration anywhere in an annual plan — whatever day of the month someone signs up on, that whole
calendar month carries the charge, exactly like the free trial's month does.

**What is explicitly not asked for in this round, so nobody spends time on it:** changing the plan
or cancelling partway through an annual cycle. Treat both as refused for an annual subscription —
however you signal the refusal, it should be consistent with how this system already signals a
refusal elsewhere. Renewing at a different plan, part-cycle refunds, and anything about what
happens at the renewal boundary beyond "it charges again" are all out of scope for this change.
