The billing cycle of every new site you order will be synchronized to your account so that all sites are renewed on the same day of the month.
When you order a new site the credit card on file for your account will be charged the full monthly rate of $4.95 (Basic), $9.95 (Max) or $19.95 (Ultimate). The unused balance of the charge will be posted to your account and applied toward the next month's renewal fees.
For example; if you order a second WinHost Basic site in the middle of your monthly billing cycle your credit card will be charged $4.95, with $2.48 of that charge applied as a prorated credit. Next month you will only be charged $7.42 for both sites ($4.95 + $4.95 - $2.48 = $7.42).