A pro-rata charge is a part charge on your bill for a service you used for only part of a month. Find out more about pro-rata charges and how they work. 
If you're new to Spark, or you've made changes to a plan or service, you may have two charges for the same service on your bill. This is likely a pro-rata charge. Find out what a pro-rata charge is and how it works.
  
    If your bill is larger than expected, you may have a pro-rata charge.
 
Note: the Unplan usage is not pro-rated. It's charged after one month, not in advance. Other services such as a calling add-on will still be charged in advance.
 
A pro-rata charge can occur because:
 
- Spark charges for services a month in advance. 
 
 
- Your usual billing cycle starts and ends on the same days each month. You are charged for a full billing cycle a month in advance. 
 
 
- Your connection date (when you start using Spark's services) with Spark is usually different from the date your billing cycle starts. 
 
 
- The difference between your billing cycle date and your connection date results in a part-month adjustment. It creates a pro-rata charge on your bill. 
 
For example:
- Natalie joins Spark and has her broadband connected on 4 October. 
 
 
- Natalie's billing start date is 14 October. 
 
 
- This means Natalie will receive a pro-rata charge for 10 days. 
 
 
- Natalie's first bill will show a full month charge (14 October-13 November), and a separate pro-rata charge (4 October-13 October). 
 
Unplan example (not pro-rated):
- Ashley joins Spark and has her Unplan broadband connected on 4 October.
- Ashley is billed for one month's usage on 3 November.
- Ashley's first bill will show a full month charge (4 October-3 November) for the amount of data she used.