P-card (procurement card)
A P-card (procurement card) is a company-issued charge card that lets employees buy low-value goods and services directly, without a requisition or purchase order. Controls live on the card itself: transaction limits, merchant category blocks, and monthly reconciliation. Used well, P-cards clear small-dollar tail spend out of the PO process; used loosely, they become untracked maverick spend.
Examples
Tail spend cleanup: A 60-person hardware startup finds 1,400 of its 1,900 annual purchase transactions are under $250. Moving them to P-cards with a $1,000 single-purchase limit frees its one buyer to run RFQs instead of keying small POs.
Split-transaction audit: A monthly report flags two $1,850 charges to the same supplier on consecutive days against a $2,000 card limit. The $3,700 fixture order should have been a PO with negotiated pricing; quoting the next one properly saves 8%.
Rebate math: At $900,000 of annual card spend and a 1.2% rebate, the program returns $10,800 a year, roughly covering the administrator's time for reconciliation and audits.
Definition
The economics are about transaction cost. Processing a requisition, PO, receipt, and invoice can cost more in labor than a $40 order of lab gloves is worth. P-cards collapse that overhead to a card swipe and a monthly statement, which is why they are the standard tool for tail spend: the thousands of small purchases that make up a sliver of dollars but most of the transaction count.
Controls are what make the tool defensible. Typical programs cap single transactions (a few hundred to a few thousand dollars), set monthly limits per card, block merchant categories that make no sense for the cardholder, and require receipt upload at reconciliation. Card programs also pay rebates on spend volume, which can fund the program's administration.
The boundary question is where cards end and the requisition process begins. Anything needing supplier qualification, negotiated pricing, or receiving inspection belongs on a PO. The failure mode is drift: orders split into $1,900 pieces to stay under card limits, which converts controlled buying into maverick spend with a statement attached. Good programs audit for split transactions and feed card data into expense management so the spend stays visible.
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