What a purchase order is actually for
A purchase order is a written statement of what you asked for, at what price, delivered where and by when, carrying a number that both sides can quote. Its value is entirely in being written down before the goods move. Once a pallet is on a truck, the version of events with a document behind it wins, and the version reconstructed from memory does not.
Three parties use it after the fact. Receiving uses it to check what arrived. Accounts payable uses it to decide whether an invoice should be paid, by matching the invoice against the PO and against the receiving record. And you use it, months later, to answer the question of why there is a pallet of maple in the rack that nobody remembers ordering.
Numbering, and why the scheme matters more than the format
Any numbering scheme works if it satisfies two conditions: a number is never reused, and numbers sort in the order they were issued. Year plus a running counter, as in 2026-PO-0142, does both and stays readable over the phone. Pure sequential numbering does both as well and gives away how many orders you place, which some businesses care about and most do not.
What causes trouble is a scheme with a variable-width counter, because 2026-PO-9 and 2026-PO-10 sort in the wrong order in every list you will ever paste them into. Pad the counter to a fixed width from the beginning. Changing scheme later is possible but leaves a permanent seam in your records, which is the sort of thing that costs an hour every time somebody digs through the old files.
The tax field, and where the rounding happens
The tax rate on this page is a field you fill in. There is no national sales tax rate in the United States, the combined rate depends on the state and often on the county and city, whether a given item is taxable at all varies, and whether freight is taxable is its own separate question with different answers in different states. If you are buying for resale, the transaction may not be taxable to you at all, which is what the resale certificate is for. Confirm what applies to your business with your state revenue department or a CPA and put that number in the field.
On the arithmetic: every line amount is rounded to the cent once, so the printed column adds exactly to the printed subtotal. Tax is then calculated once on that subtotal. The alternative is to calculate tax on each line and sum those, which can land a cent or two away from the first method because rounding does not distribute. Neither is more correct in general, but many accounting and point-of-sale systems expect one specific behaviour, and a one-cent mismatch is enough to leave an invoice sitting unmatched in a reconciliation report. The tool shows you both figures so you can see whether it matters on this particular order.
The receiving sheet is the half people skip
A purchase order on its own proves what you asked for. It proves nothing about what turned up. The second page exists because the moment to count a delivery is while the driver is still standing there, and that moment lasts about ninety seconds. A printed sheet with the ordered quantities already filled in turns counting into ticking, which is the difference between it happening and it not.
Write shortages and damage on the sheet and on whatever the driver asks you to sign. A note made at the door carries weight; the same observation raised a week later is a claim about the past. Photograph damage with the packaging still on it, because packaging condition is what distinguishes transit damage from warehouse damage.
Where this fits with the rest of the paperwork
A purchase order goes out to a vendor. A quotation goes out to a customer before the work, and a receipt or invoice goes out after it. If you are pricing the job that this material feeds, the job cost and markup calculator takes the material figure and adds labor and margin. When the invoice arrives and does not get paid, the invoice aging tracker is where it shows up.
Questions people ask
Is a purchase order legally binding?
That depends on the facts and on your state, and this page is not the place to get an answer. What is worth knowing practically is that the document works regardless: it records what you asked for, at what price, before anything shipped, and that record is useful in a disagreement whether or not anyone is arguing about contract formation. If the sums involved matter to your business, the terms behind the order are worth a conversation with a lawyer once, not a template.
What is three-way matching?
It is the check that the purchase order, the receiving record and the vendor invoice all agree before the invoice gets paid. Ordered ten, received ten, invoiced for ten, at the price on the PO. Most small businesses do this by eye rather than by system, and it still catches the two common problems: being billed for a quantity that never arrived, and being billed at a price nobody agreed to. The receiving page here is the middle document of the three.
Should the PO number go on the invoice?
Ask for it, and say so in the notes. An invoice without a reference has to be matched by hand against the vendor name, the date and the amount, and that is where invoices get paid twice or not at all. Most vendors will print your reference if you ask at order time. Very few will add it retroactively without being chased.
What do I do when the delivery is short?
Write the actual count in the Received column, note the shortage in the notes column, and put the same note on whatever paperwork the driver hands you before you sign it. Then tell the vendor the same day. What happens next is between you and them, and depends on what you agreed. The only part that is entirely in your control is having the count written down while the goods and the driver were both in front of you.
Can I use this for a service rather than goods?
Yes, with the quantity column carrying hours or days and the unit column saying so. The receiving page is less useful for services because there is nothing to count at a door, though a line for the date the work was completed and an initial from whoever confirmed it serves the same purpose. For an ongoing arrangement rather than a single order, what you want is a written scope, not a PO.