Billing and Payment Terms 2 Billing Terms: Two times per month- Service provided during 1st -15tth and 16th-31st of month (15 day standard) 1. Send fax about service detail that clients have used 2. Payment by on-line . 3. Issue tax invoice 4. Every 1st & 31st (1 month basis): Send out Dacom billing statement on 20th of following month 5. Pay on-line after received billing statement