Search for purchase order programs and you will find everything from a free Word template to enterprise procurement suites, with very little to tell you which one you actually need. The honest answer is that there is a ladder, and the right rung depends on how many orders you raise, how many people raise them, and how much control you need over spend. This guide walks the ladder from paper to platform, shows what a good PO template contains, and names the signals that tell you to climb.
Key takeaways
- There is no single best program; there is a ladder from templates to spreadsheets to accounting modules to dedicated tools to full platforms.
- Free templates in Word, Excel or Google Sheets are genuinely adequate at low volume, provided your numbering is disciplined.
- Spreadsheets break on concurrency, numbering and open-order visibility, not on the document itself.
- Move up a rung when admin time, unmatched invoices or stalled approvals start costing more than the next tool would.
What people actually mean by a purchase order program
When a small business owner asks what program to use for purchase orders, they are usually asking one of two questions. The first is practical and immediate: what do I open on my computer to produce a purchase order that looks professional and that my supplier will accept? The second is strategic and arrives later: what should we be running so that orders are approved properly, numbered without collisions and matched against invoices without anyone chasing paper?
Those two questions have different answers, and conflating them is why so much advice on this topic is unhelpful. If you raise four orders a month, being told to implement a procurement platform is absurd. If three people raise four hundred, being told to use a Word template is equally absurd. The useful framing is a ladder of five broad option types, each of which is the correct answer for someone.
Whatever program you choose, the document itself must carry the same content and the same unique reference number. The tool changes the effort and the control; it does not change the fundamentals of what a purchase order is.
Rung one: paper and Word or Excel templates
The lowest rung is a document template. You download or build a purchase order layout in Word, Excel, Google Docs or Google Sheets, fill it in for each order, save it as a PDF and email it to the supplier. It costs nothing, requires no learning, and produces a document every bit as valid as one from expensive software. For a business raising a handful of orders a month, this is not a compromise. It is the right tool.
The quality of a template lies entirely in what it captures. A weak one omits fields that later turn into disputes; a good one is laid out in clear blocks both you and the supplier can read at a glance.
- Header block. Your business name, address, logo, contact name, phone and email, so the supplier knows exactly who is ordering and who to query.
- PO number and date. A unique reference and the issue date, placed prominently, because every later document quotes them.
- Supplier block. The supplier's trading name, address and the contact you agreed the order with, plus their quote or reference number if there is one.
- Deliver-to block. The physical delivery address and required delivery date, kept separate from the billing address, which is where most template errors happen.
- Line items table. One row per item with description, supplier part code, quantity, unit of measure, unit price and line total, with enough description that the wrong item cannot be sent in good faith.
- Totals block. Subtotal, delivery or carriage, tax and grand total, shown as separate lines rather than a single figure.
- Terms and authorisation. Payment terms, any reference to your standard purchasing terms, and the name and signature of the person authorising the spend.
Two disciplines make templates work. Keep the blank template read-only so nobody overwrites the master, and take numbering seriously from day one with a simple sequential scheme such as PO-2026-0001, because that number is the thread tying the order to the delivery note and the invoice.
Rung two: spreadsheet logs and where they break
The natural next step is not a fancier document but a register. You keep the template for producing the PO and add a spreadsheet log with one row per order: number, date, supplier, description, value, expected delivery date, status and the invoice reference once it arrives. That single sheet answers the questions a template alone cannot, above all what is still outstanding and what we have committed to spend this quarter.
A well-kept log stretches surprisingly far. Filters give a view by supplier, conditional formatting flags overdue deliveries, and a running monthly total gives a rough commitment figure. Plenty of businesses run this way for years, and doing it properly beats jumping to software you will not configure or use.
Spreadsheets rarely fail at the document. They fail at the register. The PO you produce in Excel is fine. What breaks is the shared file: two people opening it at once, a number reused because someone worked from a stale copy, a row deleted without trace, and no reliable answer to which orders are still open. When you notice yourself reconciling the log rather than using it, you have outgrown it.
The breaking points arrive in a predictable order. Concurrency comes first, as soon as more than one person raises orders. Numbering integrity follows, usually revealed by a duplicate a supplier spots before you do. Then approval, because a spreadsheet cannot prove a manager sanctioned a purchase before it was placed. Finally matching, when invoice volume passes the point where anyone can hold open orders in their head.
Rung three: the purchase order module in your accounting package
Most small business accounting packages include purchase order functionality, either in the standard product or a tier above it. This rung is frequently overlooked, and it is often the highest-value move a growing business can make because the software is already paid for and the data already lives where your bills and payments live.
The gain is integration rather than sophistication. Suppliers exist once as records. PO numbers are issued by the system, so duplicates stop happening. The order converts into a bill when the invoice arrives, carrying values across without re-keying, and your accountant sees committed spend alongside actual spend. For a business with one or two people raising orders, this closes almost every gap a spreadsheet leaves.
The limits show up around control and collaboration. Accounting-package PO modules typically offer thin approval routing, little or no budget checking before an order is raised, no requisition step for staff who should request rather than order, and no supplier-facing portal. They are built to record purchasing accurately, not to govern it. That is a reasonable trade until the number of people who can commit company money grows.
Rung four: dedicated purchase order tools
Above the accounting module sits a category of tools that do purchase orders and little else, but do them properly. They give you a requisition form for staff, approval rules by value or department, automatic numbering, a supplier record, PDF dispatch by email, goods receipting and a live view of open orders. Many integrate back into the main accounting packages so the bill still lands in your ledger.
This rung suits businesses whose problem is purchasing control rather than procurement breadth: a company where several managers can commit spend and finance is losing real hours chasing approvals and matching invoices. Scope is narrow, so implementation takes days rather than months. If you are weighing options at this level, our comparison of purchase order software sets out what to look for.
What a PO-only tool will not do is cover the stages either side of the order. Sourcing, quotation comparison, contract management and spend analysis sit outside its remit. If your difficulty is choosing suppliers or negotiating prices rather than issuing orders, this rung solves the wrong problem.
Rung five: full procurement platforms
The top rung treats the purchase order as one step in an end-to-end flow. A full e-procurement platform covers requisition, sourcing, approval, the PO itself, goods receipt, invoice matching and reporting, with supplier records, catalogues and budget controls underneath. Everything shares one data set, so the quote that won becomes the order, the order becomes the receipt, and the invoice matches automatically or is flagged as an exception.
The value here is not prettier purchase orders. It is control and evidence: an approval trail that survives audit, spend visible by department and supplier before the money is committed, and three-way matching that catches overbilling without anyone comparing documents by hand. That matters once procurement is a genuine function in your business rather than an administrative task someone fits around other work.
The cost is effort. A platform needs supplier data cleaned, approval thresholds decided, the chart of accounts mapped, and someone to own it. Adopted at the right moment it repays that quickly; adopted too early it is an expensive way to produce the same PDF a template would have. ProcureWave sits on this rung, which is why we would rather you climbed to it when the signals below appear than because a search result suggested it.
Comparing the option types
The table below compares the five rungs on the four things that actually differ between them: what they cost, how much control they give you over spend, how much ongoing effort they demand, and the size of business each tends to suit.
| Option type | Cost | Control | Effort | Typically suits |
|---|---|---|---|---|
| Paper or Word / Excel template | None | Minimal; relies on personal discipline | Low to set up, high per order | Sole traders and micro businesses, a few orders a month |
| Spreadsheet template plus log | None or included in your office suite | Basic register and status tracking | Low to set up, growing maintenance | Up to roughly ten orders a week, one or two raisers |
| Accounting package PO module | Included or a tier upgrade | Good numbering and ledger integration, thin approvals | Low; the system is already in use | Small businesses already running the accounting package |
| Dedicated purchase order tool | Per-user subscription | Requisitions, approval rules, receipting, open-order view | Days to implement, light to run | Growing firms with several approvers |
| Full procurement platform | Subscription, scaled to scope | End-to-end control, budgets, matching, audit trail | Weeks to implement, needs an owner | Mid-sized and larger organisations with a procurement function |
Read the table downward rather than picking the row you like the look of. Every rung buys control with effort, and the return appears only when that control solves a problem you already pay for in wasted time, duplicated work or money spent without sanction.
Signals that it is time to move up a rung
Rather than judging by headcount or turnover, watch for concrete symptoms. Each of these is a reliable indicator that your current method has reached its limit.
Numbering collisions
A duplicate PO number appears, or a supplier queries a reference you cannot find. Your register is no longer authoritative.
Unmatched invoices
Bills arrive that nobody can tie to an order or a delivery, and finance is emailing around to ask who bought this.
Approvals that stall
Orders wait days in an inbox, or staff place them first and seek sign-off afterwards because waiting is impractical.
More hands on the file
A third or fourth person needs to raise orders, and the shared spreadsheet is being copied, locked or overwritten.
No forward view
You cannot say what has been committed but not yet invoiced, so budget conversations rely on guesswork.
One signal appearing occasionally is normal. Two or more every month is the point at which the next rung pays for itself, because the hours spent reconciling and chasing have quietly grown larger than the subscription you were avoiding. Whichever rung you land on the discipline is the same, so it is worth reading through the purchase order process so that the tool you choose supports the workflow rather than replacing your thinking about it.
Choosing what fits you now
Pick the lowest rung that removes your current pain, and expect to move again. A business that starts with a well-built template and a disciplined log, moves to its accounting package's PO module as volume grows, then adopts a platform when approvals and matching become the bottleneck, will have spent its money in the right order. The two failure modes are staying on a rung a year too long and jumping two rungs at once.
Before you evaluate anything, write down the three questions you cannot currently answer quickly: what is outstanding with this supplier, who approved this spend, what have we committed this month. Any option that answers all three is worth trialling; any that does not is a change of software rather than a change of outcome. Test with your own supplier names and order values, not the vendor's demo data.
If your purchase orders have outgrown templates and spreadsheets and you want to see requisition, approval, order, receipt and invoice matching running as one flow on your own buying, talk to our team and we will walk you through it honestly, including whether you are ready for it yet.
Frequently asked questions
What program can I use to make a purchase order?
Almost any word processor or spreadsheet will produce a usable purchase order, and a free template in Word, Excel, Google Docs or Google Sheets is a perfectly respectable starting point. As volume grows you move up to the purchase order module in your accounting package, a dedicated PO tool, or a full procurement platform. See our guide to purchase orders for what the document must contain.
Is there a free purchase order program?
Yes. Free templates for Word, Excel, Google Docs and Google Sheets cost nothing, and several accounting and invoicing tools include basic PO creation in their entry tiers. Free options handle the document well; what they do not handle is approval, numbering discipline and matching once several people are raising orders.
Can I just use Excel for purchase orders?
You can, and many small firms do it well for years. A template sheet for the document plus a log sheet for the register covers low volumes. It breaks down when several people need the file at once, when numbers start repeating, or when nobody can say which orders are still open.
Do I need purchase order software if I already have accounting software?
Often not at first. If your accounting package has a PO module, using it keeps orders, bills and payments in one ledger, which is usually better than a separate tool. You outgrow it when you need proper approval routing, budget checks or supplier collaboration.
How do I know when it is time to move up to a proper system?
Watch for three signals: duplicate or missing PO numbers, invoices arriving that nobody can match to an order, and approvals that sit in inboxes for days. Any one of those means the admin cost of your current method has started to exceed the cost of replacing it.
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