How to process solar installer books per job ?

[Kira]

Please advise how to process solar installation business transactions(small business), material is purchased per job with customers deposit. Solar panels, inverter & batteries are purchased for each job with deposit from customers. Only cables & other small items may remain after installation making it difficult to account for.. Desired accounting software is Pastel Partner or Sage Accounting

[Fintura]

I would suggest that you use Project based accounting for each job.
A suggestion based on what I have done in the past with a solar business:
- Suppliers for panels, inverters and batteries to quote you separately per job, the quote and invoice can be accounted for against the job for that client.
- Customer invoice to be raised against the job for the client
- The smaller items, usually purchased by the installers, should be purchased separately per job allowing you to account for each slip/invoice against the relevant job

Hope that helps!