The W-9 Chase: Vendor Paperwork Before 1099 Season

Every January, a certain kind of email goes out from small companies to people they paid last year: “Hi — sorry to bother you, could you send us a W-9?” Some come back the same day. Some come back in a week. Some never come back, because the freelancer changed email addresses, the one-time vendor closed up shop, or the contractor from last spring simply doesn't feel any urgency about your paperwork. Meanwhile the filing deadline for the year's information returns is coming whether the forms arrive or not.

The January scramble isn't a tax problem. It's an operations problem that surfaces at tax time. The information you need was available the day you first paid each vendor; nobody asked for it. Fixing that takes one sitting in the fourth quarter and one rule for the year after.

Why now, not January

In the fourth quarter, the people you paid this year still remember you. Their email addresses mostly still work. A polite request lands as routine housekeeping rather than a last-minute chase. You also have time to deal with the awkward cases — the vendor who won't respond, the name that doesn't match the business you thought you were paying — before they become deadline problems. The exact filing dates are in the IRS instructions for Form 1099-NEC; read them for the current year rather than trusting last year's memory, because the rules around these forms have changed recently and may change again.

Build the list from what you actually paid

Don't start from your vendor list. Start from your payments. Pull every outgoing payment for the year from the bank account, the accounting system, and any payment app you use, and group them by payee. The vendor list tells you who you meant to pay; the payment record tells you who you did pay, including the one-off designer, the person who fixed the office network, and the consultant somebody hired on a card.

For each payee, note three things: how much you paid in total, how you paid (bank transfer, check, card, payment platform), and whether you already have a W-9 on file. How you paid matters more than most founders realize. The IRS instructions treat some payment methods differently — payments made by card or through certain payment platforms are generally reported by the processor rather than by you — so the same vendor can land in different places depending on how the money moved. This is also where the monthly close pays off: if payees were categorized as you went, this list takes an hour instead of a day.

Let the form decide, not your guess

The W-9 is where the vendor tells you their legal name, their taxpayer identification number, and their federal tax classification. That classification is what determines whether a 1099 is needed, and it's precisely the thing founders tend to guess at. “They have a company name, so they must be a corporation” is how forms get missed. Collect the form, read the classification the vendor checked, and let that drive the decision.

If your list turns up someone you've been paying like a contractor who looks, on reflection, a lot like an employee — set hours, your equipment, a single client — that's a different conversation, and a more important one. The misclassification check is worth running before the paperwork makes the arrangement official for another year.

Collect it the safe way

A W-9 contains a taxpayer identification number, which for sole proprietors is often a Social Security number. That makes the humble W-9 request one of the more sensitive things a small company routinely does by email — and one of the more common openings for fraud. Two habits cover most of the risk:

• Receive forms somewhere better than an inbox. A secure upload link from your accounting or document system is better than an attachment. If a form does arrive by email, move it to a restricted folder and delete it from the mailbox rather than letting it sit in a searchable thread forever.
• Treat “here's our updated W-9 and new bank details” as a payment-change request. Because that's what it is. A fresh W-9 bundled with new banking information is a classic setup for invoice fraud, and it deserves the same call-back verification you'd apply to any change in where money goes.

For payers who file information returns, the IRS also offers a TIN-matching service that checks whether a name and number combination matches its records. If you file for more than a handful of vendors, it's worth asking your accountant whether you should be using it; a mismatch caught in November is far easier to fix than a notice in the spring.

Make the W-9 a gate, not a chase

The fourth-quarter sweep fixes this year. The rule fixes every year after: no first payment without a W-9 on file. Put it in whatever process creates a new vendor — the approval, the first invoice, the account set-up — so the form is collected at the only moment when the vendor is motivated to send it, which is before they get paid. It also gives whoever pays the bills a polite, non-negotiable reason to say “not yet.”

Pair it with the rest of the vendor record. When a new vendor is added, capture the W-9, the verified payment details, the owner inside your company, and — for anything recurring — the renewal date that belongs on your renewal calendar. One record, created once, answers the tax question, the fraud question, and the renewal question.

Know what you don't know

This playbook is about getting the paperwork in hand, not about deciding every filing question yourself. Who needs a 1099, which form, what threshold applies, how to treat payments to attorneys or to vendors paid partly by card — those are questions for the current IRS instructions and your accountant, and the answers depend on details this article can't see. The operational job is to make sure that when your accountant asks for the list, the list exists, the forms are attached, and nobody is emailing strangers in the second week of January.

The bottom line

The January W-9 chase is a paperwork debt that was taken on, one vendor at a time, all year. Pay it down in the fourth quarter: build the list from what you actually paid, note how each payment was made, collect the forms somewhere safer than an inbox, and let the vendor's own classification drive the decision. Treat any new W-9 bundled with bank changes as the fraud risk it is. Then close the loop for good with one rule — no first payment without a W-9 on file — and next January becomes a report you hand to your accountant instead of a week of apologetic emails.

— Tom