Vendor and Contractor Application Forms

A vendor you pay without a taxpayer number can turn a routine invoice into backup withholding. The IRS sets that rate at 24 percent when the TIN is missing or when the IRS says the TIN is wrong. A vendor application form is how you collect the name and the tax facts and the proof of insurance before the first payment.

This guide is general education. It is not tax advice or legal advice. Use the current IRS forms. Ask a tax professional when the facts are close.

Decide the status before the form

The SBA says an independent contractor operates under a separate business name and invoices for the work. The SBA says a contractor can meet the legal definition of an employee. If that happens you may owe back taxes and penalties. You may have to provide benefits and reimburse wages under the Fair Labor Standards Act. The SBA points to an Equal Employment Opportunity Commission guide for the distinction.

The SBA says classification turns in large part on control. If you have the right to say when and where and how the work gets done, the SBA says that points to an employee. The SBA says the IRS uses three categories. They are behavioral control and financial control and the type of relationship. The SBA says many states use an ABC test. California is one of them.

1. The worker is free from the control and direction of the hirer in doing the work.
2. The worker performs work outside the usual course of the hiring business.
3. The worker has an independent trade of the same nature as the work.

The SBA says you should not relabel an employee as a contractor to avoid payroll taxes. The IRS and other agencies look for that move.

A presentation hosted by SCORE and prepared by Robert M. Warzel on August 19 2025 says a label is not enough. Calling someone a contractor does not make them one, even if they agree. Status depends on the facts and on the test a court or an agency applies. There is no single test for every purpose.

That presentation describes a contractor as someone who charges a fee and keeps control of the method and can work for more than one company and pays their own income tax and Social Security and Medicare. It says a contractor is engaged for a set task. It says they do not receive company benefits such as paid vacation or health insurance or a retirement plan. They do not do the same work as your employees. They do not wear your uniform or carry your business card.

The same presentation says employers are not required to complete Form I-9 for independent contractors. It says they are not required to provide Affordable Care Act coverage for contractors who do not meet the common-law definition of employee. Misclassification can bring back wages and overtime and the value of benefits and tax and insurance obligations and civil penalties. Treat those lines as the presentation’s list. They are not a ruling in your case.

What a vendor information form should hold

Cognito Forms offers a vendor onboarding form template. The page describes it as a starting point. It collects company details and contact information and the services offered and compliance documentation and approvals. It can route the entry through review and approval. The template does not replace Form W-9. Use it for the business facts. Put the tax certifications where the IRS rules can be met.

A practical supplier application form can hold these groups.

• Legal name and the business name if it differs. The IRS wants the name that matches the TIN.
• A contact for the work and a contact for invoices if they are different people. Cognito’s template covers contact information. It does not prescribe two contacts. Add the second contact when your bills and your project notes go to different people.
• The services they will perform. That is the scope you are buying.
• Payment facts you need to pay them. These sources do not list a required bank-field set for vendors.
• Compliance documents. For many founders that means the W-9 and an insurance certificate and references.

A business vendor form that tries to collect every possible policy on day one gets abandoned. Ask for the items that change whether you will hire them and whether you can file a 1099. Ask for the rest when a specific job needs it.

How to collect W9 form facts the IRS will accept

The IRS says Form W-9 requests the correct name and taxpayer identification number of the payee. For an individual the TIN is in most cases a Social Security number. Some people use an IRS individual taxpayer identification number and must put that number on the W-9. Keep the form in your files for four years in case the worker or the IRS asks.

The IRS says you may build a substitute Form W-9 if the content is like the official form in substance and it meets the certification rules. You may place that substitute inside another form you use. A valid W-9 or substitute must contain the payee’s name and TIN. The payee or a person authorized to sign for the payee must sign and date it under penalties of perjury.

The certifications have to state under penalties of perjury that:

1. The payee’s TIN is correct.
2. The payee is not subject to backup withholding because of a failure to report interest and dividend income.
3. The payee is a U.S. person.
4. Any FATCA code on the form is correct.

If you omit the FATCA field, the IRS says to tell the payee that item 4 does not apply.

Give the certifications their own signature line. That satisfies the IRS rule that the certifications be clear. If one signature covers the certifications and other terms, the certification language has to stand out. The IRS requires this sentence above that shared signature line.

“The IRS does not require your consent to any provision of this document other than the certifications required to avoid backup withholding.”

The IRS says you may not use a substitute that makes the signature agree to provisions unrelated to those certifications. You may not suggest that backup withholding applies unless the payee agrees to unrelated terms.

You must give the Form W-9 instructions if the payee asks for them. If the IRS has told the payee that backup withholding applies, tell them to strike the certification language about underreporting. You can say that in writing or aloud.

The IRS says a requester may set up a system for payees to send Form W-9 by electronic means, including by fax. A contractor application form can hold the substitute. The signature and the four certifications have to survive the design.

A foreign person may not give you Form W-9. The IRS extends that bar to a U.S. branch of a foreign person in the regulation it cites and to a foreign branch of a U.S. financial institution that is a qualified intermediary. If you cannot tell whether the payee is foreign or a U.S. person, the presumption rules require you to treat the payee as a non-exempt U.S. person and to deduct backup withholding. Payments to an independent nonresident alien contractor may face 30 percent withholding unless a treaty or the law sets a lower rate. These pages do not walk through Form W-8. If the vendor is foreign, stop and use the IRS nonresident rules. Do not force a W-9.

Backup withholding is 24 percent of reportable nonemployee compensation when the U.S. person has not given a TIN in the manner required. The same rate applies when the IRS notifies you that the TIN is incorrect and the payee does not certify it as the notice requires. The IRS says the payer must begin backup withholding if no TIN is provided or if the TIN is wrong on its face. A TIN is wrong on its face if it has fewer than nine digits or more than nine digits or a letter in it. An “Applied For” waiting period of 60 days can exist for interest and dividends. The IRS says that wait does not cover nonemployee compensation. Those payments face backup withholding at once even if the payee has applied for a TIN.

If you must deduct backup withholding, the IRS says you file Form 945. If you do not collect the withholding the IRS requires, you may become liable for the uncollected amount.

The IRS offers TIN matching e-services so certain payors can check a name and TIN combination. These pages do not say every small business is eligible. Read the IRS rules before you trust a match.

The 1099 contractor form is not the application

The application collects the facts. Form 1099-NEC reports the payments.

The IRS instructions dated for the forms as of December 2026 say this. For tax years beginning after 2025, file Form 1099-NEC for each person you pay at least $2000 in the course of your business for services by someone who is not your employee. Parts and materials count in that services figure. Attorney fees of $2000 or more go on the same form. File Form 1099-NEC by January 31. That date covers paper and electronic filing. If you withheld any federal income tax under the backup withholding rules, file Form 1099-NEC no matter how small the payment.

The IRS says not to use Form 1099-NEC for wages you paid employees. Report wages on Form W-2. Payments to a corporation are outside the report in many cases. The IRS says the corporation exception does not cover legal services. Attorney fees go on Form 1099-NEC even when the law firm is a corporation. Gross proceeds paid to an attorney of $600 or more are a Form 1099-MISC item in those instructions. Do not mix the two thresholds.

Filers of 10 or more information returns in a calendar year must e-file Form 1099-NEC. The IRS names the Information Returns Intake System and the FIRE system. It says FIRE is being retired. Starting with the 2027 filing season for tax year 2026 returns, IRIS is the sole electronic platform for the returns FIRE accepts now.

Drake Forester’s SCORE article from January 7 2015 describes Form 1099-MISC. It tells you to list people you paid more than $600 for services or rents or prizes or other income. It puts nonemployee compensation in Box 7. It says to mail recipient copies by January 31 and to mail Form 1096 with the IRS copies by February 28. It says you are not required to send 1099s to corporations, with an exception for incorporated attorneys paid more than $600. That article is a snapshot of an older form. The box and the threshold in it do not match the current IRS instructions above. Use the IRS instructions for the year you are filing.

The IRS notes that a contractor may have employees or may hire subcontractors. Those workers create filing duties for the contractor. Your vendor form does not file their returns.

Insurance and references

SCORE says an ACORD certificate is proof of the amount and kind of liability insurance a client requires. The Association for Cooperative Operations Research and Development sets the form. SCORE says that group provides standardized certificates for almost 90 percent of U.S. property and casualty carriers. The certificate summarizes policy limits and coverage types and the effective date and the expiration date. SCORE lists certificates for general liability and property and automobile and aviation and more.

SCORE says a small business owner can require an ACORD certificate from prospective contractors or subcontractors or vendors. The point is to see whether they are insured for the work. A company can compare each certificate with the job’s requirements. Ask for a current certificate. SCORE says the form is updated from time to time and that you should request a new one when a policy renews if the coverage changed.

The SBA describes coverages a business buys for itself. General liability is aimed at injury to a person and property damage and medical expenses and libel and slander and the cost of defending a lawsuit and settlements. Professional liability is aimed at malpractice and errors and negligence for a business that provides services. Product liability is aimed at a defective product that causes injury, for a business that makes or sells a product. Those descriptions help you read a certificate. The SBA page does not say every vendor must carry every type. Match the certificate to the risk of the job.

SCORE Greater Cincinnati’s guide to finding a service provider says to start with three candidates so you can see a range of cost and approach. Call each one for a five-minute talk about services and cost. Ask each one for three references and call several of them. Before the final choice, interview at least three current users of the vendor you rank first. The guide calls a face-to-face meeting the strongest check. It suggests a 15-minute visit at their place of business at no cost. A vendor compliance form can ask for the three reference names. The calls are the check. A name on a form is not a reference until you speak to the person.

How the file should look before you pay

Warzel’s presentation hosted by SCORE lists practices that support a contractor classification. They are practices. They are not a safe harbor written into the form.

• Use a contractor agreement for the terms of the work.
• Require the W-9.
• Keep the file with vendor files. Do not file it as an employee record.
• Pay by the project or by an agreed flat fee on a set schedule. Do not pay by the hour or the week or the month.
• Do not reimburse business expenses.
• Do not give paid vacation or paid holidays or sick leave or retirement benefits.
• Do not set their hours or their days.
• Do not require a uniform or grooming rules you use for employees.
• Give them their own guidelines. Do not hand them the employee handbook.
• Do not give them a job title or a company business card.
• Do not invite them to meetings that are for employees.
• Treat a performance problem as a contract issue. Do not run an employee-style review. Do not put human resources in charge of the relationship.
• Focus on the result. Do not control the details of how they do the work.
• Avoid using a former employee as a contractor. Avoid giving contractors the same work as employees. Avoid using them for work that is integral to the business.
• Audit the arrangements and the template agreement on a set schedule.

The IRS says to have the W-9 once you have decided the person is a contractor. SCORE’s hosted IRS webinar materials say a business should have vendors complete Form W-9 before they work on a job, so you are not hunting for a number after the payments cross a reporting line. Collect it before the first payment. If the TIN is missing, backup withholding is the IRS consequence described above.

A short path you can run

1. Write the result you are buying. Decide whether the facts look like an employee under the SBA’s control test. Stop and get advice if you are unsure.
2. Send a vendor application form for the business name and the contacts and the services.
3. Collect W9 form details on a substitute that has the payee’s name and TIN and a dated signature under penalties of perjury. Keep the four certifications clear.
4. Ask for a current ACORD certificate if the job needs proof of insurance. Read the expiration date.
5. Ask for three references. Call them. Use the SCORE Cincinnati minimum of three current users before you pick the final vendor.
6. Sign a contractor agreement. Store the file with vendors.
7. Track payments. Use the current 1099-NEC threshold and the January 31 due date. Do not use the 2015 Box 7 instructions.

You can host that independent contractor form as a link with Jotform. The vendor opens the link. You check the signature and the TIN before you pay.

Pitfalls

You trust the word contractor. Warzel’s presentation says agreement on the label is not the test. The SBA says control of when and where and how the work is done points to an employee.

You pay and then ask for the W-9. The IRS backup withholding rate is 24 percent when the TIN is missing. For nonemployee compensation the waiting-TIN exception does not apply.

The signature covers a pile of unrelated terms. The IRS bars a substitute that ties the W-9 signature to provisions outside the certifications. Use a separate signature line for the certifications.

You send Form W-9 to a foreign vendor. The IRS says a foreign person may not provide that form. The wrong form can point you at the wrong withholding rate.

You follow the 2015 checklist. Forester’s SCORE article is about Form 1099-MISC and a $600 line and Box 7. The current IRS instructions use Form 1099-NEC and $2000 for the services described above.

You drop the contractor into the employee folder. The SCORE-hosted presentation says vendor files and employee files stay apart. An employee handbook and a job title pull the relationship the wrong way.

You accept an old certificate. SCORE says to get a current ACORD certificate because coverage and the form itself change.

You collect three names and do not call. The Cincinnati SCORE guide treats the calls and the visit as the qualification. The form is the list.

Trade-offs

Official Form W-9 versus a substitute inside the application. The official form is the one the IRS publishes. A substitute can sit on the same contractor application form as the services and the references. The IRS allows that blend if the certifications stay clear and you do not attach unrelated promises to that signature. A buried certification fails the rule.

A certificate versus a verbal promise. An ACORD certificate gives limits and dates you can compare. A sentence that says “we are insured” does not. SCORE does not set a minimum limit. You set the limit the job needs and you compare.

Three calls versus a visit. The Cincinnati guide wants both a short call and a 15-minute visit and reference calls. The visit takes more time and is the check that guide ranks highest. Skip the visit and you have a thinner read.

A project fee versus pay by the hour. The SCORE-hosted presentation says project pay or a flat fee supports contractor status. Pay by the hour or the week or the month does not. Some jobs are hard to price as a project. If you need to control hours and method, the SBA’s control test may point to an employee. Do not use the form to paper over that fact.

One long application versus the tax form plus a short sheet. Cognito’s template groups company details and services and compliance documents. A short sheet plus the official W-9 is simpler to explain. The short sheet can miss a reference or a certificate if you do not list them. Put those two asks on the sheet even if the W-9 stays the IRS original.

What you do next

You can pay a vendor without guessing their legal name. You can file a 1099 from a TIN you collected before the work. You can show an insurer or a client a certificate that was current when you hired the vendor.

Check the IRS instructions for the year you will file. They set the threshold and the form and the due date. Keep the W-9 for four years. Keep the contractor file out of the employee drawer.

If you want one link for the vendor application form, Jotform can hold it. The classification decision and the backup withholding duty stay with you.