The kilometre (KM) rate is specified in pay bands and charge bands. For example the rate is $0.85 for Charge band: NDIS Daily Activities as shown below from the Admin screen -> Charge Bands:
Careflo will times the amount of KM’s claimed by the rate from your charge bands. It then converts this against the support reference item number (Charge code) you are claiming for. In our example the support worker had 10km pre-approved for their visit. This equals $8.50 (10 x $0.85) and then it is converted to a unit price. The unit price takes the invoice amount and divides by the applicable rate from the charge band, in this case $8.50 / $52.85 which is 0.1608 rounded off to 0.16 for display on the invoice. This is also what happens in the claim batch and how it goes to NDIS for claiming in the batch file.
Screenshot example from an invoice:
