From Purchase Order to Purchase Bill: A Clean Workflow

Here is how a lot of small purchases go. The owner phones a supplier, says 'send the usual plus some extra tiles'. A truck arrives. Someone signs the delivery slip. A bill comes a few days later, with different quantities and a rate nobody remembers agreeing. Everybody argues from memory.

A purchase order (PO) is just the written version of that phone call. A purchase bill is the record of what you actually bought and now owe. Between the two sits the receipt of goods. If you keep these three steps separate and consistent, your stock and your supplier balances stay believable.

Step one: the purchase order

The PO says: this supplier, these items, these quantities, these agreed rates, this expected date. It's your promise and your reference. It doesn't change your stock or your payables yet, because nothing has arrived and nothing is owed.

Keep POs short and specific. 'Cement, 100 bags, ₹X per bag, delivery by Friday' is better than 'regular order'. Send the PO to the supplier in whatever form they will actually read, even a photo on WhatsApp, as long as there is a copy in your records. If you are weighing how to message suppliers, see sending documents over WhatsApp from your billing software for the general idea.

Step two: receiving the goods

This is where the money is saved or lost. When the truck arrives, count what is physically there and compare it against the PO, not against the supplier's delivery slip. Check condition too: broken cartons, wrong variants, short quantities.

• Count and inspect before signing, not after the truck leaves
• Note shortages and damage on the delivery slip itself
• Set aside damaged goods so they don't mix with saleable stock
• Tell the person who raised the PO the same day if anything differs

Step three: the purchase bill

Enter the purchase bill from the supplier's invoice, using the quantities you actually received. In Billy, a purchase bill adds the goods to stock and adds the amount to what you owe the supplier, which is why accuracy here matters more than anywhere else. A wrong quantity on a bill becomes a wrong stock number, and a wrong rate becomes a wrong cost.

1. 1Find the PO and compare each line with the supplier's invoice
2. 2Check quantities against what was physically received
3. 3Check rates against the agreed rates on the PO
4. 4If something differs, resolve it with the supplier before paying; a shortage may become a purchase return
5. 5Enter the bill with the corrected quantities and keep the invoice copy attached to your records

Where it usually goes wrong

Mismatched rates are the most common. A supplier quotes one rate on the phone and bills another, and nobody notices until the margin on that product looks thin. A PO with the agreed rate makes the conversation short: here's what we agreed.

The second one is partial deliveries. Half the goods come Monday, the rest next week. Don't wait for everything to arrive before recording what you have; record what has been received and keep the balance in mind as pending. Otherwise your low-stock list will show shortages that are actually in transit. Our post on low stock alerts and reorder points covers why checking pending orders matters.

The third is returns. If you receive damaged goods after the bill is entered, the correction should happen through a purchase return, not by editing the original bill. We explain how in handling purchase returns with suppliers.

Paying against the bill

Once the bill is right, the payment follows your agreed terms. Tracking who you owe and when is a separate habit, and it deserves its own routine; we cover it in supplier management and payables tracking.

One more habit worth building: keep the supplier's invoice, the PO and your receiving note together, whether in a folder or attached to the entry. When your accountant asks about a purchase six months later, or a supplier disputes a payment, you will be able to answer in two minutes instead of two days. Boring, but it saves real arguments.

A workflow like this takes minutes per order, but it removes arguments, not just errors. If your buying process has extra steps, such as approvals before a PO goes out, we can talk about adapting the software on our services page.