What are the one time vendors and how to make payment ?

Generally RM / PM purchase orders are repetitive in nature and procurement of RM/PM is done from contracted & registered vendors.

But as rightly pointed out by one of the panelist that procurement of project item ( CAPEX) is generally once and not repeated and still we don't make the payment without registration. But the important point is about amount involved in the transaction if the amount is substantial then even for one time transaction, vendor is registered and payment is made through normal process.

However where amount is insignificant & order is not repetitive then payment is made through petty cash without registering that vendor.

The cut of limit is varies company to company.   

Depends on amount, most of the time, we pay them from Petty Cash.

In project procurement - All most all purchases made are one time purchaes.
Suppose for setting up a plant - a transformer, a PCC panel, motors, compressors, vessels - all these are one time purchases only.
Once the plant becomes operational, O&M procurement and raw material procurement is done with limited vendor base - most suitably repeat orders.
Here the question pertains to project procurement of operations procurement?   Shehzad Gul Junior Executive - Information Technology at Fauji Fertilizer Co.
Ltd Follow Procurement IT Materials  

Thank you Roohul Amin

One time vendors are, whom you deal with out any contract, agreement or with out any pre-qualification.
There are certain purchasing limits with in a company that what could be procured directly with out involving any bidding/quotations procedure.
Here we can conclude that what you buy directly from a vendor with out calling tenders/quotations will be one time vendor.
Normally they are paid through cash from the working advances or emergency cash