Question 1

Do small service businesses need purchase orders?

Accepted Answer

Once you have more than one person buying materials, yes. The purchase order is what stops unrecorded spending and what links material cost to the job that consumed it. Below that, a disciplined receipt process and a job reference on every purchase can be enough.

Question 2

What is the difference between a purchase order and an invoice?

Accepted Answer

A purchase order is your commitment to buy, sent before delivery. An invoice is the supplier's demand for payment, sent after. Checking one against the other, plus the delivery note, is how you confirm you are paying for what actually arrived.

Question 3

Can purchase orders update stock automatically?

Accepted Answer

In Omni Field, yes. Purchase orders are tracked from draft through to stock receipt and are linked to inventory, so receiving against a purchase order updates stock levels rather than requiring a separate manual adjustment.