This tab contains all of the options needed to configure you billing information. The available options are as follows:

Billing Begins: This options sets the day-of-the-month on which your billing cycle starts. This information is necessary for various functions so that they know when to reset counters and archive information as "last month". If you choose the 29th, then at the end of February on non-leap years the beginning of the next month will be March 1st.

Evenings Begin: This option sets the time-of-day when evening hours begin. If you don't have a plan that segregates by evenings, set this to midnight.

Evenings End: This options sets the time-of-day when evening hours end. As above, if you don't have a price plan that includes evening hours, set this to midnight.

Weekends Begin: This options sets the time-of-day when weekend hours begin. Often this will be identical to when evenings begin, but it depends upon your provider. Some deem weekends to begin at whenever evenings begin on a Friday. Others deem Friday evenings to be part of evenings billing and consider the weekend to begin at midnight.

Weekends End: This option sets the time-of-day when weekends end. As above, some providers consider the morning hours on Monday to be part of the weekend, while other deem weekends as over at midnight on Sunday (in which case Monday mornings are part of the evenings billing).

Billing Increment: This option sets the increment your provider uses for billing. Most bill by the minute, but there are still plans out there that are billed by the second. Making the correct choice here will ensure that ContactsEx rounds off the call totals accurately.

Incoming Calls: This options determines how incoming calls are displayed on the Airtime Tab. You have three choices: Combined means that incoming minutes are combined with outgoing minutes. This is handy for plans in which it doesn't matter whether a call is incoming or outgoing; Single Value means that all incoming calls are (daytime, evening, and weekends) are combined into a single figure, but are kept separate from outgoing minutes. This is handy for price plans that give you a specified number of incoming minutes, regardless of when they occur; and Individual Items, which displays incoming daytime, evening, and weekend minutes separately.

Evenings & Weekends: This option determines if evening and weekend minutes are tallied as one, or if they are kept separate. Most providers don't make a distinction, and thus an evening minute counts in the same as a weekend minute. You can decide if you want to display these value separately.

Data Units: This option is combined with the next option to set the total amount of data you are allocated each month. This information is used to generate the percent consumed figure in the Data Tab. Your choices are kilobytes, megabytes, or gigabytes.

Maximum Data: This option sets the numeric value that goes along with the units specified in the previous option. If your plan provides you with 500 MB of data per month, you'd set this option to 500, and the previous option to Megabytes. If your plan provides you with 6 GB of data per month, you'd set this option to 6 and the previous option to Gigabytes.

Gigabyte Threshold: This option is used to control when the Data Tab stops telling you how many megabytes you've used and starts to tell you how many gigabytes you've used. The default value is 1024, since there are exactly 1024 megabytes in 1 gigabyte. However, if you're like me you'll probably prefer to see your data usage given strictly in megabytes, at least until it reaches a certain point. The maximum value you can set in this option is 9999, which means that once you exceed 9,999 megabytes in any field on the Data tab, that field will change to show usage in gigabytes.