What Square Doesn't Cover for B2B Invoicing

You send a Square invoice to a new business customer. Two days later their accounts payable team emails back: no PO number on the document, no billing entity that matches their vendor record, and payment won't clear until it's on net 30. Square wants a card charge today. The customer wants an approved invoice they can pay in a month. Those two things do not line up, and you're stuck in the middle explaining a workflow Square was never built for.

Square is excellent at what it was designed for: taking a payment from a person who is ready to pay right now. A cafe, a salon, a market stall, a checkout link. The friction starts the moment your customer is a company with a procurement process instead of an individual with a card.

Why Square stalls on a business customer's invoice

Square invoicing is a payment request wrapped in a light document. It assumes the recipient will click a button and pay by card or ACH. It does not assume the recipient is an AP clerk who first has to match the invoice to a purchase order, confirm the legal billing entity, route it for internal approval, and schedule payment for a date weeks out.

That gap shows up in three concrete requests you will hear again and again:

• Add our purchase order number to the invoice, or AP will reject it.
• Bill our parent entity at this address, not the trading name I gave you on the call.
• Send it to our AP inbox and set the terms to net 30.

Square gives you no clean way to handle any of these after the fact. A missing PO number quietly stalls the invoice because the AP system has nothing to match it against. Editing the billing entity means reissuing. And Square's terms options were built around "pay now," not the net-15, net-30, and net-60 conventions that B2B customers run on.

What the delay actually costs you

The cost is not the missing field. It's the round trips. You send the invoice, AP rejects it, you email back asking what PO number they want, they reply, you rebuild the invoice, you resend, they check the billing address, it's still wrong, and so on. A 30-day invoice becomes a 55-day invoice because a week evaporated in back-and-forth before the clock even started.

Each of those exchanges is a place the invoice can die. AP marks it "pending vendor," it drops down the queue, and nobody chases it. You find out when you finally look at your aging report and see an invoice that should have cleared last month. If you want to understand exactly which fields trigger a rejection, the breakdown of what AP teams want on an invoice is worth reading before your next big client.

There's also a quieter cost. Every time you reissue a Square invoice to fix a detail, you risk a mismatched invoice number, a duplicate, or a version confusion that makes your bookkeeping harder to reconcile at year end.

Let the customer fill in their own details

The fix is to stop treating the invoice as a static file you own and start treating it as a shared document the customer can complete. That is exactly the gap a collaborative invoice fills, and it's why many Square sellers pair their register with a proper B2B invoicing tool for their business accounts.

Here's how the same scenario plays out with JupiterInvoice. You create the invoice with your line items and bank details, generate a private link, and send it. The customer opens the link with no account and no signup. From there they can edit their own billing details directly: the PO number, their billing entity, their billing address, and their AP contact. You get notified of each change, and you can revert anything that looks wrong.

If they need something you have to approve, like a change to line items, pricing, or payment terms, they submit a request and you accept or decline it. Content changes create a clean new version (V1, V2) so there's a record of what changed and when. When AP is satisfied, they forward it internally and approve it, and the approved version locks permanently. No reissue, no duplicate invoice number, no guessing whether they ever opened it.

How to set terms your customer's AP will accept

Business customers pay on their cycle, not yours. If you quote net 30 up front and put it on the invoice, you remove one of the most common reasons AP kicks an invoice back. It helps to know how net 30 actually works and to be deliberate about which terms you offer to which customers.

Square does not give you room to negotiate this on the document itself. A collaborative invoice does. The customer can request net 60 if that's their standard, you can approve it or hold your line, and the agreed term is recorded on the version they approve. If you want to check when a given date falls, the due date calculator saves you the arithmetic.

Keep Square for the register, add an invoice for the AP department

None of this means dropping Square. Keep it for in-person sales and for individual customers who pay on the spot. Add a collaborative invoice for the business accounts that come with a procurement process. JupiterInvoice does not hold or move money, so it doesn't compete with your Square deposits. You can even connect your own Stripe account if you want a pay button, and it's free, with a small footer you can remove for 12 dollars a month.

Next time a business customer asks for a PO number and net terms, send them a link instead of a PDF and let them complete the parts only they can. The invoice arrives at AP already correct, and you get paid on the customer's cycle without a week of email first.