What is a P-card (procurement card), and how does it work?

What is a P-card?

A P-card, short for procurement card or purchasing card, is a payment card an organisation gives approved employees to buy low-value goods and services directly from suppliers. Each card has spending limits and blocked merchant types. The organisation pays the card bank monthly and reviews every transaction afterwards.

Take a common case. A lab technician needs a €90 replacement part from a supplier the organisation has never used. Without a card, someone creates the supplier in the finance system, raises a purchase order, records the delivery, matches the invoice and pays it, for a €90 part. With a card, the technician buys the part online, keeps the receipt, and explains the charge when the monthly statement arrives.

The card goes by several names. US federal agencies call it the purchase card. UK central government calls it the Government Procurement Card. Many companies say purchasing card or P-card. Most work as charge cards rather than credit cards: the organisation pays the balance in full every month, so no debt is carried. HMRC, the UK tax authority, describes corporate purchasing cards as “more like charge cards than credit cards”. UK government policy also lists three forms: a physical card held by one person, a lodge card stored in a supplier’s system (for example a travel agency), and virtual card numbers generated for one or several payments.

A P-card is not an expense card. With an expense or travel card, an employee spends on their own trips and claims the costs. A P-card buys goods and services for the organisation, from suppliers, under the purchasing policy. Some banks issue both on the same programme; the rules for each stay different. A P-card is also different from paying a supplier invoice by card: some accounts payable teams pay invoices that already have a purchase order with a virtual card. That is a choice of payment method at the end of the normal cycle, not the P-card route described here.

How does a P-card work in procure-to-pay?

In procure-to-pay, a P-card purchase skips the middle of the cycle. There is no purchase order, no goods receipt in the system and no supplier invoice to match. The supplier is paid by the card bank at once, and the organisation checks the purchase after the event, on the statement. The cycle runs in seven steps.

1. Issue the card. A programme administrator orders a card for a named employee, with a single purchase limit, a monthly limit and a list of blocked merchant categories, after the budget holder approves.
2. Buy within the rules. The cardholder checks that the purchase is allowed, uses a contracted supplier where one exists, and pays by card in a shop, online or by phone.
3. Keep the evidence. The cardholder keeps the receipt or invoice that shows what was bought, the price and the tax.
4. Receive the statement. The bank sends each cardholder a statement of their transactions, often daily online and in full at the end of the cycle.
5. Reconcile. The cardholder matches each charge to its receipt, adds the business reason, the cost centre and the account code, and flags any charge they do not recognise.
6. Approve. An approver who is not the cardholder reviews the statement and the receipts, and signs it off or asks questions.
7. Pay and post. The organisation pays the bank one amount for all cards, and the coded transactions are posted to the ledger.

The saving comes from removing steps, not from a lower price. A UK Procurement Policy Note of April 2020 (PPN 03/20) noted that a card used for a one-off approved purchase removes the need to raise a purchase order and to set up a new supplier in the finance system. Citing the National Audit Office, it put the saving at around 35% of transaction costs, or £5 per transaction, compared with traditional payment methods.

Which controls limit what a P-card can buy?

A P-card has no purchase order to approve in advance, so its controls sit on the card and on the review after the purchase. Public programmes write them into law or policy; a private company can copy the same set. The table lists the main controls, what each one stops, and where it appears in US and UK public rules.

A merchant category code is a four-digit code, chosen when the merchant sets up card acceptance with its bank, that describes the type of business: a restaurant, a hardware store, an airline. The values are defined in the international standard ISO 18245. The code describes the merchant, not the item, so a block works on types of shop. A hardware store that also sells gift cards passes the block, which is why the review after the purchase still matters.

How is a P-card statement reconciled?

Reconciliation is the monthly check that every charge on the statement is a real, allowed purchase with evidence. US federal law requires cardholders and approving officials to reconcile the charges on each statement with receipts and other supporting documents. A private policy usually sets a deadline, for example ten working days after the statement date, then escalation to the approver’s manager.

The worked example below shows one cardholder’s statement checked line by line. The card has a single purchase limit of €1,000 and a monthly limit of €5,000; the organisation has a stationery contract with one supplier. All names and figures are fictional.

The arithmetic: 89.00 + 264.00 + 145.20 + 950.00 + 950.00 + 49.00 = €2,447.20. The total is well under the monthly limit, yet the statement shows four of the common problems: a purchase that belongs in another process, spend that bypassed a contract, a split purchase and a possible fraud. The unknown subscription is the urgent one: a charge the cardholder does not recognise usually means the card number was stolen.

What receipts does a P-card purchase need for VAT or sales tax?

A P-card purchase needs the same tax evidence as any other purchase. The card statement proves that money was paid; it does not prove what was bought or how much tax was charged. Under EU VAT law (Article 178 of the VAT Directive) and UK VAT law, a buyer normally needs a valid VAT invoice to recover input VAT. So the cardholder keeps the supplier’s invoice or receipt, unless the card programme supplies tax data that the tax authority accepts in its place.

The UK sets out these rules in HMRC VAT Notice 701/48. Statements from ordinary purchasing, charge and credit cards are not acceptable for VAT purposes. Only cards with a VAT invoicing capability can carry the invoice data. In that case the supplier sends the invoice data through the card system, either as a summary report, with the value of the supply and the VAT rate, or as a line item detail invoice, which HMRC also calls a level 3 invoice, with one line per item. A supplier that can send only summary data must still issue a VAT invoice for a single transaction above £5,000.

In the EU, the content of a VAT invoice is set by Article 226 of the VAT Directive, compared with other rule sets in the guide to invoice processing. In the United States, sales tax depends on the state and on the buyer. GSA SmartPay training notes that federal centrally billed accounts are exempt from state sales taxes in every state, although some states require forms or other steps. The practical rule is the same everywhere: write in the card policy which document the cardholder must keep for each purchase, and check it during reconciliation.

How do public-sector purchase card programmes work?

Governments are large P-card users, and their programmes are documented in public. The two best-documented examples are the US federal GSA SmartPay programme and the UK Government Procurement Card. Both treat the card as a way to pay small suppliers quickly while keeping a full record of each transaction.

GSA SmartPay covers several business lines: purchase (to procure, order and pay for supplies and services), travel, fleet and integrated accounts. The spend and refund figures above cover all of them, so they show the scale of the programme, not of purchase cards alone. The UK limits date from April 2020. That month, Procurement Policy Note 03/20 asked departments to raise the limits of key cardholders to £20,000 per transaction and £100,000 a month, so that suppliers were paid faster during the COVID-19 outbreak. GOV.UK has marked that note out of date since January 2023, but the pan-government card policy, last updated in April 2020, still shows these limits. Each department sets the limits of each card, so check the current figures with the department before using them as a benchmark.

What are the risks of a P-card programme?

The risks of a P-card programme come from the same thing that makes it useful: the money leaves before anyone approves the purchase. Each risk has a known control, and most of them are found in the monthly reconciliation.

• Personal or improper purchases. A cardholder buys something for themselves. Merchant blocks stop some of it; a named approver who reads the receipts stops the rest. US federal law requires agencies to recover the cost of improper purchases, through salary offsets if needed.
• Split purchases. One need is paid in several charges to stay under the single purchase limit. Reports that show several charges to the same merchant on the same or close dates find it.
• Spend outside contracts. A cardholder buys at a local shop what a contracted supplier sells cheaper. The UK policy requires contracted suppliers to be used whenever possible; a card policy can list the categories that must go through the catalogue instead.
• Paying twice. The supplier is paid by card, then sends an invoice that accounts payable also pays. Ask suppliers to mark card-paid invoices as paid, and check invoices from card suppliers against card data before payment.
• Lost VAT. Without a valid VAT invoice or accepted card tax data, input VAT usually cannot be recovered. The receipt rule is checked at reconciliation, not at year end.
• Card fraud. A card number is stolen and used by someone else. Unknown charges are disputed with the bank at once and the card is replaced.
• Invisible spend. Card transactions show the merchant name, not the items, so they are hard to classify. Include card data in spend analysis, and use line-item data where the bank provides it.

When is a P-card better than a purchase order?

A P-card is better than a purchase order for low-value, one-off purchases that are delivered and paid at once, from suppliers the organisation does not need to set up or manage. A purchase order is better when the purchase needs contract terms, staged deliveries, a receipt check or a supplier relationship that lasts. The table sets out the usual split.

The card is one of several buying channels for the many small purchases that make up the tail of spend. How to give each kind of small purchase its own channel, from catalogues to quick quotes, is set out in tail spend management.