What is a W-9 and when do I collect one?
A W-9 is a form you give (or request) to verify a person’s or business’s taxpayer information for reporting payments in the U.S. This guide explains when you collect a W-9, who asks for it, and what to do next.
Quick answer: when do I collect a W-9?
In most small-business situations, you collect a W-9 when you’re paying someone (a contractor, freelancer, or vendor) and you may need their tax information for U.S. tax reporting.
A common example: if you pay an independent contractor for services, you usually ask them for a W-9 before you start working together (or as soon as you’re setting them up to be paid). Then your payroll/tax reporting provider uses it to prepare forms like 1099s when required.
If you’re not sure whether the person should be treated as a contractor (1099) or an employee (W-2), ask a qualified payroll provider or accountant—this decision affects what forms you collect and when.
W-9 basics (plain language)
A W-9 (Request for Taxpayer Identification Number and Certification) is a form the payee fills out to confirm their name, business name (if any), tax classification, and tax identification number.
You use the W-9 to capture the tax information you need to report payments correctly. The W-9 itself is generally not filed with the IRS by you. Instead, you keep it in your records and use it when preparing required annual tax forms.
Important: W-9s are about vendor/contractor tax info—not employee payroll. If someone is your employee, you don’t collect a W-9 the same way; you handle employee reporting differently (typically W-2).
Who collects a W-9: the payee vs. the payer
Usually, you (the business) collect a W-9 from the person or business you will pay.
- If you’re paying an independent contractor for services, you typically request a W-9 from them.
- If you receive a W-9 request from another business, you (the payee) complete it and send it back.
If you’re using payroll software or a payroll/tax provider, they may have a standard workflow for adding contractors/vendors. That workflow often includes collecting and storing W-9 details so annual reporting can be prepared accurately.
When to request it (timing that helps you avoid problems)
Request a W-9 early—ideally when you’re onboarding a new contractor or vendor and before you issue payments.
- Ask for the W-9 as part of your “set up to get paid” step.
- Keep the signed/complete W-9 in your records.
- Re-check it if the person updates their name or business name, or if you receive corrected information.
Also, be aware that tax rules and thresholds can change over time, and state rules can differ. Confirm the specifics with a qualified payroll provider, accountant, or tax professional, and double-check current IRS/state guidance yourself.
Costs and support: what to expect if you outsource or switch
If you use a payroll service provider, they may also help with the contractor-side reporting workflow (like 1099 preparation) depending on what you need. Costs vary based on your state, number of workers (employees vs. contractors), how often you pay, and what’s included (tax filing, filings support, reporting tools, and year-end forms).
As a general guide—not a quote—many providers charge a base monthly fee plus a per-worker fee, or a per-run approach for payroll. For contractor reporting, there may be additional charges for setup and year-end forms. Get everything in writing before you decide.
Red flags to watch for when comparing providers:
- Vague pricing (no clear “per employee/per contractor” language)
- Hidden fees for year-end W-2/1099 work
- No clear statement of what tax forms they file and when
- Weak or slow support when deadlines are close
- Pressure to sign quickly before you understand what’s included
RunWise Pay is a FREE matching service that helps you connect with participating payroll service providers. We don’t run payroll, file taxes, or give tax advice—you stay in control and choose the provider.
How to handle W-9s safely (and what NOT to ask for)
Only collect what’s necessary for tax reporting. A W-9 typically includes taxpayer identification information, but you should avoid requesting extra personal data.
To protect your business and your payees:
- Collect W-9s from the payee directly (using a secure method when possible).
- Keep completed W-9s organized so they’re easy to find at year-end.
- Don’t collect employee records when you’re dealing with contractors.
For privacy and safety, don’t ask for or store sensitive banking or identity info you don’t need for the purpose. RunWise Pay collects only contact and business intent (like business name, contact name, phone, optional email, how many people you pay, and state). We never collect SSNs, EINs, bank account numbers, or employee personal records.
Before you sign with any provider, confirm what’s included in writing—especially tax filing responsibilities, year-end form handling, and support around deadlines.
A W-9 is the tax info form you collect from many contractors or certain vendors, usually before you pay them, and it helps you prepare required reporting—get details in writing with a qualified provider.