AP & AR
Vendor onboarding and tax-form collection
Finbryn sets up new vendors for US businesses with a signed W-9 collected before the first payment goes out, so entity type, TIN and payment details are on file from day one and year-end 1099 reporting starts from clean data instead of a scramble.
Aged receivables
Illustrative client · August 2026
USD
| Customer | Current | 1-30 | 61+ | |
|---|---|---|---|---|
| Customer A | 18,400 | - | - | - |
| Customer B | 9,250 | 4,100 | - | - |
| Customer C | - | 6,780 | 2,200 | - |
| Customer D | 12,600 | - | - | - |
| Customer E | - | - | - | 1,450 |
| Total | 40,250 | 10,880 | 2,200 | 1,450 |
Illustrative. An example of the document, not a client's figures.
Why the W-9 comes first
A W-9 tells you whether a vendor is a corporation, an individual or a partnership, and gives you the taxpayer identification number the IRS needs matched to any 1099 filed later. Collecting it before the first payment, rather than in January, is the difference between a five-minute email and a month of chasing vendors who have since closed their business or changed their bank.
What we set up for every new vendor
We request the W-9 as part of intake, hold payment on new vendors until it is received where that is your policy, and enter the vendor's entity type, TIN and default payment terms into QuickBooks Online or Xero. The record then flags automatically for 1099 vendor tracking if the entity type is one the IRS requires reporting on.
Corporations, LLCs and sole proprietors
Most payments to C corporations and S corporations do not need a 1099-NEC, while payments to individuals, sole proprietors and most partnerships do once they cross the reporting threshold. Getting the entity type right at onboarding is what makes that distinction automatic instead of a year-end guess.
Backup withholding
A vendor who will not provide a TIN can trigger backup withholding requirements under IRS rules. We flag any vendor missing a W-9 after a reasonable follow-up period so you can decide how to proceed, rather than deciding for you.
Rolling out to existing vendors
For businesses that never collected W-9s in the first place, we run a one-time sweep of your existing vendor list, request what is missing, and bring the file current before moving into ongoing tracking.
Questions
Frequently asked questions: Vendor onboarding and tax-form collection
How do I get vendors to actually send back a W-9?
A short, clear request at the time you set up the vendor, tied to the first payment, gets the highest response rate. We send that request and follow up if it goes unanswered.
What if a vendor is a foreign contractor, not a US person?
A foreign vendor completes a Form W-8 series form instead of a W-9, and different reporting rules apply. We flag these vendors separately so they are not tracked under domestic 1099 rules by mistake.
Can I still pay a vendor before the W-9 arrives?
That is your policy call. Some businesses hold first payment, others pay and continue to request the form. We follow whichever rule you set during onboarding.
What does vendor onboarding and tax-form collection actually include, month to month?
Vendor onboarding and tax-form collection covers a vendor intake form covering entity type, payment terms and banking details, along with any required tax form requested and collected before the first payment goes out. The work runs inside QuickBooks Online, Xero, Bill.com or Tipalti, the file stays under your own subscription, and a senior principal reviews the output before it reaches you each period.
What access do you need to start vendor onboarding and tax-form collection?
View or edit access to QuickBooks Online, Xero, Bill.com or Tipalti is enough to begin; nothing about your existing subscription or login changes on our side. Any additional access needed for a specific deliverable, such as a bank portal or receipt inbox, is agreed with you first, and the scope is set out in your engagement letter.
Why collect vendor tax details before the first payment instead of at year end?
Chasing one vendor for missing details in January is easy. Chasing forty vendors after the fact, once some have closed or changed banks, is not. Collecting it up front avoids that.
What if a vendor will not provide the details you ask for?
We flag it and tell you. Any reporting or withholding consequence is a decision for you and your tax preparer, not something we decide on your behalf.
How is vendor onboarding and tax-form collection priced?
Pricing for vendor onboarding and tax-form collection depends on your transaction volume, the software you use, and how much cleanup is needed before ongoing work starts. Current ranges are published on the pricing page, and your exact fee is confirmed in writing before anything begins.
What software works with vendor onboarding and tax-form collection?
Vendor onboarding and tax-form collection runs inside QuickBooks Online or Xero, whichever you already use. If you are not yet set up in either, we can configure a file in your name so you keep ownership of it once the engagement is under way.
Related services
- AP & AR1099 vendor trackingVendor payments are tracked through the year against information-reporting thresholds, so the data a credentialed preparer needs to issue 1099 forms is ready before the filing deadline, not assembled in a rush afterward.
- AP & ARBill pay (Bill.com, Melio)Vendor bills are entered, coded and routed for your approval, then paid on the schedule you set through Bill.com or Melio, with every payment matched back to its bill.
Next step
Talk to the team that would run your books
A short call covers your setup, your software and what a first month would look like. You get a written scope and price after it.