Prostay AccountingSuppliers and spending

Purchase orders

A written promise to buy, before anything arrives and before anything is owed. Raising one, sending it to the supplier, and turning it into a bill when the invoice comes.

Where to find it
AccountingExpensesPurchase orders
Last checked
August 16, 2026

A purchase order is what you send a supplier before they deliver: this is what we want, this is the price we agreed, this is where to send it. It commits the hotel to a cost without recording one.

What an order is, and what it is not

An order posts nothing to your accounts. It does not appear in your profit and loss, it does not add to the supplier's balance, and it does not appear on the payables ageing. The only place it shows up as a number is the Purchase orders tile above the supplier list, which counts open orders precisely because they are money committed and not yet owed.

The cost appears when the invoice does, and the order becomes a bill. Until then, what you have is a record of an agreement, which is worth having for three reasons: the supplier knows exactly what was ordered and at what price, whoever receives the delivery can check it against something, and when the invoice arrives at a different figure you have the evidence rather than a memory.

Reading the list

The Purchase Orders list, five entries sorted by ORDER DATE, newest first. Columns read SUPPLIER, ORDER NO, ORDER DATE, CATEGORY, MEMO, TOTAL AMOUNT, ATTACHMENTS, STATUS and ACTIONS, with every supplier name, order number, category and memo truncated to fit. Cellar and Vine Mercha… 08/13/26, Beverage Cost, Festive wine allocation, 9,768.00 USD, Open; Brightpath Amenities 08/12/26, Guest Amenities a…, 3,960.00 USD, Open; Atlas Mechanical Servi… 08/07/26, Repairs and Maint…, 4,422.00 USD, Open; Pinnacle Hospitality So… 07/28/26, Software Subscri…, 1,584.00 USD, Closed; Lakeview Linen Services 07/15/26, Cleaning and Lau…, 5,280.00 USD, Closed. Open badges are green and Closed grey, every ATTACHMENTS cell is a dash, and each row ends in a three dot menu.
Open means the order has been raised and not yet turned into a bill. Closed means it has.
  1. Open. The order stands and nothing has been billed against it. These are the ones counted on the supplier tile, and the ones worth reading down when you are wondering what is still on its way.
  2. Closed. The order has done its job. A closed order no longer offers Copy to Bill, because copying it again would bill you twice for the same delivery.

The dropdown above the table filters to Open or Closed, and the search box matches order number, memo and supplier name. Memo is the column that makes this list readable, so write one on every order: "Boiler house annual service" tells you more at a glance than any amount does.

Raising an order

The GENERAL INFORMATION section of a blank Purchase Order, with AMOUNT 0.00 USD in the top right. Purchase Order Date reads 14/08/2026, Purchase Order status Open, Terms Net 30, Due Date 13/09/2026 and Supplier Select a Supplier. On the row below, Email is empty behind the placeholder Separate email with a comma and carries a Cc/Bcc link, and Mailing address and Ship To are empty behind Enter mailing address and Enter shipping address.
Ship To is the only field here that is not on the bill form, and it is the one the supplier actually reads.

Most of this is the same header as every other purchase form: a date, terms that drive the due date, a supplier, and the email and mailing address that come from the supplier's record. Three fields behave differently enough to name.

FieldWhat it changes
Purchase Order status Open or Closed, and it starts Open. Close an order by hand only when it is finished without being billed, for instance because you cancelled it. Billing it through Copy to Bill is the normal way an order closes.
Ship To Where the goods go, which for a hotel is frequently not the billing address: a loading bay, a rear entrance, a linen store. This is the field the supplier's driver ends up reading, and the only one on the form that the bill has no equivalent of.
Your message to vendor Prints on the order and is included when you send it. Delivery windows, gate codes and who to ask for belong here rather than in the memo, which the supplier never sees.

The order number is filled in for you from the next in the series. As with a bill, you can overtype it, and consistency matters more than the particular convention.

The lines

The CATEGORY DETAILS grid on purchase order PO-2026-0018. Column headings read #, CATEGORY, DESCRIPTION, AMOUNT and CUSTOMER. Two numbered lines, both with a Category picker reading Repairs and Maintenance and an empty picker reading Select customer, and a bin icon at the end of each row. Line 1 is described as Annual service and certification for an amount of 3400, line 2 as Flue gas analysis and parts for 620. Both amounts are shown as bare numbers, with no currency and no decimals.
An order carries lines like any other document. Nothing is posted to the accounts until it becomes a bill.

The two grids are the ones you already know: a category grid pointing at accounts, and an item grid pointing at the products and services catalogue, with sales tax added underneath at the property's rate. An order is priced the way the bill it becomes will be priced, which is the point: a surprise at invoice time should be the supplier's doing, not the form's.

Write the lines the way you want them to read on the bill, because that is where they are going.

Sending it to the supplier

The Send Purchase Order #PO-2026-0018 dialog. Three empty boxes, To marked with an asterisk, CC and BCC, each showing only a placeholder address. At the foot a Cancel button and a greyed out Send button.
Send emails the order to the supplier. Type the address here; it sends this one order and leaves the supplier record alone.

Send from the row menu emails the order. All three boxes open empty, including To, which is worth knowing before you reach for this in a hurry: the supplier's address is on their record but it is not carried across, so you type it. CC and BCC are there for your own accounts inbox and for whoever is receiving the delivery. The Send button stays greyed out until there is something in To. What you type here sends this one order and leaves the supplier record alone.

From inside the form the same thing is Save and Send, which saves first, so a change you made on the way past goes out with it.

Turning an order into a bill

The row menu open on purchase order PO-2026-0018. Seven entries, each with an icon: View/Edit, Send, Copy to Bill, Print and Duplicate in black, then Void and Delete in red.
Copy to Bill is the one that matters. It is how an order stops being a promise and becomes money you owe.

Copy to Bill opens a new bill with the supplier, the memo and every line already on it. Check the figures against the invoice in front of you, correct anything the supplier has charged differently, and save. The bill is what posts to your accounts; the order never did.

You can also start from the other end. On a blank bill, choosing a supplier who has open orders makes the form say so and offer Add from PO, which lists their open orders and copies the lines from the one you pick. Use whichever end you are standing at, but use one of them rather than retyping, because copying is the only thing that connects the two documents.

Copying an order you place every month

Duplicate makes a fresh copy of an order: same supplier, same lines, same amounts, with the next number in the series and today's date, opened as a new Open order. For a standing monthly order it is faster and safer than starting blank, because the lines and their coding come with it.

Duplicating does nothing to the original. Two open orders for the same thing will both be counted as committed spend, so if you are replacing an order rather than repeating it, void the one you are replacing.

Voiding and deleting

The dialog headed Void Purchase Order?, reading "Voiding the transaction will reset the balance to zero. This action cannot be undone." At the foot a Keep button and a red Void Purchase Order button.
Voiding keeps the number and empties the order. Deleting takes both, which is why the two are separated by a line in the menu.

Void an order that was raised and then cancelled. It stays in the list at zero, marked Voided, and stops counting toward committed spend. The number stays used, which is what you want: a gap in a numbered series is a question somebody will have to answer later.

Delete removes the order entirely and cannot be undone. It is for an order raised by mistake and caught immediately. Anything a supplier has already seen should be voided rather than deleted, because they will refer to a number that no longer exists.

A menu with Void and no Delete is a permission rather than a fault: your role does not include the one that allows deleting an order. It cannot be added from Users in System Settings today, because the screen checks for a right the role editor has no setting for, so deleting is available only to accounts with unrestricted access. Voiding is the better habit anyway, for the reason above.

Where to go next

The bill an order becomes is covered in recording what you spend, and settling it in paying bills. The supplier's own page, in suppliers, lists their orders alongside everything else you have raised against them.

Common questions

  • Does a purchase order affect my accounts?

    No. Nothing is posted until the order becomes a bill. It does not appear in your profit and loss, on the supplier’s balance or in the payables ageing. The one place an open order is counted is the Purchase orders tile above the supplier list, which is a measure of what you have committed to, not what you owe.

  • The invoice came in higher than the order. What do I do?

    Use Copy to Bill, then correct the lines on the bill to what you were actually charged before saving. The bill is the document that matters to your accounts. If the difference is not one you accept, raise the query with the supplier before saving, because the order is your evidence of the agreed price.

  • Why is Copy to Bill missing from the menu?

    Because the order is Closed or Voided. A closed order has already been billed, and offering to bill it again is how a hotel pays twice for one delivery. If it was closed by mistake, open it with View/Edit, set the status back to Open, and the action returns.

  • Can I raise an order without knowing the exact price?

    You can, but be aware of what you are creating. The value on an open order is counted as committed spend, so a placeholder figure makes that number wrong. Put your best estimate in, and correct the figures on the bill when the invoice arrives.

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