Published June 7, 2026 · Updated June 7, 2026
A practical guide to collecting W-9s from vendors, knowing when 1099s are required, avoiding costly filing mistakes, and how CloseFlow's Vendor & Customer Onboarding app keeps you compliant year-round.
Every January, accounting teams across the country face the same scramble: collecting W-9s from vendors they paid months ago, reconciling 1099 totals against the general ledger, and praying that the names and taxpayer identification numbers (TINs) on file match what the IRS has on record. For organizations with dozens or hundreds of vendors, this process can consume weeks of staff time and still result in penalties, B-Notices, and strained vendor relationships.
The root cause is almost always the same: W-9s were not collected at the time the vendor relationship was established. When a W-9 is missing, incorrect, or collected too late, the downstream consequences ripple through the entire 1099 filing process. The good news is that this is entirely preventable. Collecting W-9s upfront — before the first payment is ever issued — transforms 1099 season from a crisis into a routine administrative task.
This guide covers everything accounting teams need to know about W-9 collection and 1099 filing: when each is required, when it is not, best practices that prevent problems, common mistakes that trigger penalties, and how CloseFlow's Vendor & Customer Onboarding app automates the collection and tracking process.
A Form W-9, officially titled "Request for Taxpayer Identification Number and Certification," is the document a U.S. person or entity completes to provide their legal name, business structure, and TIN (Social Security Number or Employer Identification Number) to a payer. The payer — your organization — uses this information to report payments to the IRS on Form 1099.
A Form 1099 is an information return that reports certain types of payments made to non-employees. The most common forms are the 1099-NEC (Nonemployee Compensation), used for independent contractors and service providers, and the 1099-MISC, used for rents, royalties, prizes, and certain other payments. The payer files these forms with the IRS and sends copies to the payee, who uses them to report income on their own tax return.
The W-9 and 1099 work together as a system. The W-9 provides the data needed to prepare the 1099. Without a valid W-9, the payer cannot accurately complete the 1099, which exposes the organization to backup withholding obligations and IRS penalties.
The short answer: a W-9 should be collected from every U.S. vendor or independent contractor before any payment is made. There are very few exceptions, and the cost of collecting one unnecessarily is far lower than the cost of not collecting one that turns out to be required.
An individual or unincorporated business paid for services must receive a 1099-NEC when payments reach the reporting threshold: $2,000 for payments made in 2026 and later, and $600 for payments made before 2026. Collect a W-9 before payment. This includes consultants, freelancers, accountants, IT contractors, cleaning services, and maintenance providers. Attorney payments are covered separately below.
Rent payments (office space, equipment, land) require a 1099-MISC at the same reporting threshold: $2,000 for payments made in 2026 and later, and $600 for payments made before 2026. Royalties are a separate, lower threshold, described below. Collect a W-9 before payments begin.
Prize winnings, legal settlements, and certain other payments require a W-9 and 1099-MISC reporting at the same threshold: $2,000 for payments made in 2026 and later, and $600 for payments made before 2026.
Attorney fees use the same dollar threshold as other reportable payments: $2,000 for payments made in 2026 and later, and $600 for payments made before 2026. The special rule is that the usual corporate exemption does not apply to payments for legal services, so a payment to a law firm organized as a corporation can still be reportable once it meets that threshold. Collect a W-9 before engaging the firm.
If you are unsure whether a vendor will cross the reporting threshold — $2,000 for payments made in 2026 and later, $600 before that — collect the W-9 at onboarding. The few minutes it takes a vendor to complete the form avoids a January chase.
A 1099 is required when your organization pays a non-employee certain types of income above the threshold for that payment type. For the categories that used to use $600, the threshold is $2,000 for payments made in 2026 and later and $600 for payments made before 2026. Royalties and interest keep their own lower thresholds below.
The most common 1099. Required when you pay an independent contractor, freelancer, or other non-employee at least $2,000 for services in 2026 or a later year, or at least $600 for services paid before 2026. This includes consultants, web developers, marketing agencies (if unincorporated), cleaning services, and repair contractors.
Required for rent of at least $2,000 paid in 2026 or a later year, or at least $600 paid before 2026, to an individual, partnership, or LLC for property used in your trade or business. This includes office space, warehouse space, equipment rentals, and land leases.
Royalties have a lower threshold than most other payments: $10 or more requires a 1099-MISC. This catches mineral rights, intellectual property licensing, and similar arrangements.
Prize winnings, contest awards, and certain other payments require 1099-MISC reporting at $2,000 for payments made in 2026 and later, and at $600 for payments made before 2026.
If your business pays interest of $10 or more to an individual or unincorporated entity, a 1099-INT is required.
Not every payment requires a 1099. Understanding the exclusions is just as important as understanding the requirements — it prevents wasted effort and unnecessary vendor friction.
Payments to C corporations and S corporations are generally exempt from 1099 reporting, with two major exceptions: (1) attorney fees paid to a corporate law firm are always reportable, and (2) medical and health care payments to corporations require a 1099-MISC. For all other services, a payment to an Inc. or Corp. does not require a 1099. Note: LLCs that have elected corporate tax treatment (C-corp or S-corp) should indicate this on their W-9.
Payments for physical goods, materials, supplies, and inventory are not reportable on 1099. If you pay a vendor $10,000 for raw materials, no 1099 is required. If you pay the same vendor $1,000 for installation services, the service portion is reportable.
Payments made by credit card, debit card, or third-party payment networks (PayPal, Stripe, Square) are not reported on 1099 by the payer. The payment processor handles reporting via Form 1099-K. This is an important exception — if you pay a contractor via PayPal, you do not issue them a 1099-NEC.
Wages paid to employees are reported on Form W-2, not 1099. A worker who is truly an employee — regardless of how they are labeled in contracts — should never receive a 1099 for wages. Misclassification is a serious issue with its own set of penalties.
1099s are only required for payments made in the course of a trade or business. Personal payments — paying a plumber to fix your home sink, hiring a tutor for your child — are not reportable.
Payments to foreign vendors are not reported on 1099. Instead, foreign vendors provide a Form W-8BEN or W-8ECI, and withholding rules may apply depending on tax treaties. These forms are kept on file but are not submitted to the IRS with 1099s.
The difference between a smooth January and a filing nightmare usually comes down to when and how W-9s are collected. These best practices are drawn from controllers and AP managers who handle hundreds of vendors.
The single most important rule: no W-9, no payment. Build this into your onboarding workflow so that AP cannot issue a check or ACH until the W-9 is received, reviewed, and approved. Once a vendor has been paid, your leverage disappears. Vendors who were responsive before the first invoice become unreachable in January.
Only the official IRS Form W-9 (rev. October 2018 or later) should be accepted. Custom intake forms, email replies, or scanned old versions are not valid and may be rejected by the IRS. The official form is available at irs.gov and should be sent directly to vendors for completion.
A surprising number of W-9s are returned incomplete or incorrect. Check that: (1) the legal name in Line 1 matches the TIN, (2) the federal tax classification is marked, (3) the TIN is present and formatted correctly, (4) the signature and date are included, and (5) the exempt payee code is only filled if genuinely applicable. Common errors include using a DBA instead of the legal entity name, transposed TIN digits, and missing signatures.
Use the IRS TIN Matching service to verify that the TIN and legal name on the W-9 match IRS records before the first 1099 is filed. This free service catches mismatches before they become B-Notices or penalties. Validation should be performed shortly after receiving the W-9, not in January.
W-9s contain sensitive tax information and must be stored securely — encrypted, access-controlled, and separate from general vendor communications. The W-9 should be linked to the vendor master record so it is easy to find when 1099 season arrives.
If a vendor changes their business name, entity type, or TIN — for example, after converting from an LLC to an S-corp — request a new W-9 immediately. Do not rely on verbal updates or email confirmations. The W-9 is the only documentation the IRS accepts.
Maintain a live dashboard or register showing which vendors have valid W-9s on file, which are pending, and which are missing. Review this weekly, not annually. A vendor with a missing W-9 who received $50,000 in payments is a much bigger problem than one who received $500.
Even experienced accounting teams make these mistakes. Recognizing them is the first step to preventing them.
This is the most expensive mistake. Vendors who were eager to get paid in March are often unresponsive in January. Chasing down W-9s during filing season delays 1099 preparation, compresses the filing deadline, and increases the risk of penalties for late filing. Collect W-9s at onboarding, every time.
An unsigned W-9 is not valid. A W-9 without a TIN is useless. A W-9 with a DBA in Line 1 instead of the legal entity name will cause a TIN mismatch. Build a checklist into your review process and reject incomplete forms immediately, while the vendor is still motivated to get paid.
Filing a 1099 with a mismatched name and TIN triggers an IRS B-Notice and potential backup withholding obligations. The IRS TIN Matching service is free, easy to use, and should be part of your standard onboarding workflow. Validation takes minutes; fixing a B-Notice takes hours.
Some payees are exempt from 1099 reporting — certain government agencies, tax-exempt organizations under 501(c), and entities receiving payments below the threshold. However, the safest practice is to collect a W-9 from everyone and let the exemption code on the form guide your 1099 determination. Do not assume a vendor is exempt without documentation.
W-9s stored in email inboxes, shared drives, or unencrypted folders expose the organization to data breach risk and potential identity theft liability. Treat W-9s with the same security as employee payroll records.
Once W-9s are collected and payments are tracked, filing 1099s correctly and on time is the final step. These practices minimize errors and ensure compliance.
Do not wait until December to figure out which vendors crossed the reporting threshold ($2,000 for payments made in 2026 and later, $600 before that). Flag reportable payments in your accounting system as they occur. Categorize vendor payments by type (services, goods, rent, and so on) during normal AP processing so the 1099-eligible total stays current.
Before filing, reconcile the total 1099 amounts by vendor to the general ledger. If the sum of all 1099-NEC forms does not equal the total nonemployee compensation recorded in the GL, find the discrepancy before submitting to the IRS. This reconciliation is one of the first things an auditor will test.
The IRS requires e-filing if you are submitting 10 or more 1099s. Even below that threshold, e-filing is faster, provides immediate confirmation, and reduces transcription errors compared to paper forms. Most accounting software and dedicated 1099 services (Track1099, Tax1099, etc.) support direct e-filing.
Recipients must receive their 1099 copies by January 31. Plan to have all forms prepared and mailed or emailed by January 25 at the latest to allow for postal delays. For electronic delivery, ensure the vendor has consented to electronic receipt and has a valid email address on file.
If you discover an error on a filed 1099 — wrong TIN, wrong amount, wrong name — file a corrected form as soon as possible. The IRS charges lower penalties for corrections filed before August 1 than for corrections discovered during an audit. Do not wait.
The IRS recommends retaining 1099 copies, W-9s, and supporting payment documentation for at least four years from the filing due date. This ensures you can respond to any IRS inquiry or audit request without scrambling to reconstruct records.
Even with good W-9 collection practices, errors in 1099 preparation and filing are common. These are the mistakes that generate the most penalties and B-Notices.
Services go on 1099-NEC. Rent, royalties, and prizes go on 1099-MISC. Interest goes on 1099-INT. Using the wrong form causes the IRS to reject the filing and may result in the payment being treated as unreported. Double-check the form type for each payment category.
The most common filing error: the name on the 1099 does not match the TIN in IRS records. This happens when a vendor uses a DBA on their invoices but their legal entity name on the W-9, or when an individual contractor provides their business name but their personal SSN. Always use the legal name and TIN exactly as they appear on the W-9.
The deadline to file 1099s with the IRS and provide copies to recipients is January 31 for 1099-NEC (nonemployee compensation) and February 28 (paper) / March 31 (electronic) for most other 1099 forms. Missing these deadlines results in automatic penalties that escalate with the length of the delay.
A common and expensive error: including payments made via credit card, debit card, or third-party networks on a 1099-NEC. These payments are reported by the payment processor on Form 1099-K, not by the payer. Reporting them again creates duplicate income for the recipient and may trigger IRS inquiries.
Attorney fees use the same dollar threshold as other reportable service payments: $2,000 for payments made in 2026 and later, and $600 for payments made before 2026. What is different is the corporate exemption. It does not apply to payments for legal services, so a payment to a law firm organized as a corporation can still be reportable once it meets the threshold. This is one of the most commonly missed 1099 requirements.
Many states require separate 1099 filing or information reporting, even when the federal 1099 is filed electronically. States like California, New Jersey, and Wisconsin have specific requirements that differ from federal rules. Check your state's Department of Revenue guidance before assuming federal filing is sufficient.
The IRS enforces 1099 compliance through a penalty structure that escalates based on how late the filing is and whether the failure was intentional. Understanding these penalties is a powerful motivator for getting the process right.
For filings due in 2024 and beyond, the penalty is $60 per form if filed within 30 days of the deadline, $130 per form if filed after 30 days but before August 1, and $330 per form if filed after August 1 or not filed at all. For intentional disregard — filing late with no reasonable cause — the penalty is $660 per form with no maximum cap. These penalties apply to both the IRS copy and the recipient copy.
If a vendor fails to provide a valid TIN or the IRS notifies you of a TIN mismatch, you are required to begin backup withholding at 24% on reportable payments. Failing to withhold when required exposes the organization to liability for the amount that should have been withheld, plus interest and penalties. The only way to avoid this is to collect valid W-9s upfront and validate the TINs.
These are the statutory penalties for failing to file correct information returns or failing to furnish correct payee statements. The amounts are adjusted annually for inflation. In addition to federal penalties, many states impose their own fines for non-compliance or incorrect filing.
The IRS may waive penalties if you can demonstrate reasonable cause — typically, that you acted in good faith and made reasonable efforts to comply. However, "we forgot" and "the vendor wouldn't respond" are rarely accepted as reasonable cause. Documented processes, written vendor requests, and timely correction of errors strengthen a reasonable cause argument.
CloseFlow's Vendor & Customer Onboarding app is designed specifically to solve the W-9 collection and tracking problems that plague accounting teams every January. It replaces scattered emails, shared drives, and manual spreadsheets with a structured, automated workflow.
A vendor form can require a W-9 as an attachment. The vendor uploads it through the shared link, and the file stays on the submission for the reviewer. Your policy can still say no W-9, no payment. CloseFlow stores the upload. It does not decide that the form is complete or that the vendor may be paid.
Route the submission to a reviewer. That person checks that the uploaded W-9 is present and readable and records the decision. CloseFlow does not validate a taxpayer identification number with the IRS, and it does not reject a form for you.
The submissions list shows Submitted, Under Review, Pending Approval, Approved, and Rejected. Filter that list to see which requests are still open, and open the attachments to see whether a W-9 was uploaded. CloseFlow does not produce a 1099 filing report or decide which vendors crossed a reporting threshold.
The reviewer log keeps each approval, rejection, and comment with the user and timestamp. That is the record of who reviewed the submission. It is not a filing workpaper, and it does not prove the W-9 matches IRS records.
W-9s and other vendor documents stay on the submission, with role-based access, instead of only in an email inbox. Access still follows the roles you assign. CloseFlow does not file the 1099.
An approved submission can sync to QuickBooks Online as a new vendor. The push sends the vendor name, contact, address, and taxpayer identification number. It does not send tax classification or payment terms, it does not update a vendor that already exists in QuickBooks, and it does not turn on 1099 tracking. Confirm the new record in QuickBooks before you enter a bill.
You can send a reminder from an open onboarding request when a vendor has not finished the form. CloseFlow does not flag W-9s that are more than a year old, and it does not run an annual re-check or an automatic reminder campaign. If a vendor's name, entity, or TIN changes, ask for a new W-9 yourself.
W-9 collection and 1099 filing start when the vendor relationship starts. Collect the W-9 before the first payment, use the IRS TIN Matching service if you want to check the name and TIN, track reportable payments in your accounting system, and reconcile before you file. CloseFlow does not match TINs to IRS records.
CloseFlow's Vendor & Customer Onboarding app collects the W-9 on the vendor form, keeps the reviewer log, and can create a new QuickBooks vendor after approval. It does not file 1099s, validate a TIN, update an existing vendor, or tell you who crossed the reporting threshold. January is still your filing process. The onboarding record is the package you collected.
Collect the W-9 on the vendor form, keep the reviewer log, and create the new QuickBooks vendor after approval. Filing the 1099 is still your work.