zen wrote: My membership run year-round until the end of December each year. If Users subscribe to a membership in say June, is there a pay period option in CBSUb that lets me charge for whatever is remaining within the year (as opposed to for 3-month, 6-months, etc.)?

You can have calendar year membership and you can create an automatic discount promotion to calculate the proper discount depending on signup date.

CBSubs can also let you specify a

Bonus time before expiry (for calendar-based durations):

You can set this for example to 2 months meaning that if someone joins during the last 2 months of your calendar year these 2 months will be free with next years subscription.

zen wrote: - Automatic Discount Promotion - can I specify the calculation method - i.e. by the remaining days, months?

Basically you can configure one or more conditional automatic discounts that depend on order date. So for example you can subtract X amount if order date in month 3 of the year.

- Bonus time before expiry - Do you use this in conjunction with the above or as a separate option?

No this is a separate deal.

In either case, would the user's next renewal date be set to the 1st day of the next renewal year?

Yes.