Vendor ACH form
Make a vendor ACH authorization form to collect supplier bank details. Free PDF or Word download. No signup. This site does not upload what you type.
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Copies the authorization paragraphs as plain text, for an email or your own document. They point to the bank account on the form, so keep those details next to them.
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Vendor ACH enrollment form, US LetterVendor ACH Enrollment Form
____________________ pays vendors by ACH (direct deposit). Fill in this form, sign it, and return it to us to receive your payments in your bank account.
Vendor
Bank account
Please attach a voided check, or a bank letter that shows the routing and account numbers.
Authorization
I authorize ____________________ to send payments to the bank account named on this form by ACH credit (direct deposit). If a payment is sent in error, ____________________ may correct it as allowed by the ACH rules and applicable law. This authorization stays in effect until ____________________ receives written notice from me to change or cancel it and has had a reasonable time to act on it.
I confirm that I am authorized to sign for the vendor named above and that the bank details are correct. I will tell ____________________ right away if they change. The vendor agrees to be bound by the Nacha Operating Rules for these payments.
To protect both of us from payment fraud, ____________________ may call a phone number already on file to confirm these details before the first payment or after any change.
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How to use this vendor ACH form
- Add your business details. The form names your company as the one that will send the payments.
- Choose blank or pre-filled. Most companies send a blank form. Pre-fill it if you already have the vendor’s details and only need a signature. Add extra lines, such as a tax ID (EIN) or the name on the bank account, under Form options.
- Download the fillable PDF to email to vendors, or the Word file if you want to add your own fields.
- Confirm by phone before you enter the details in your bank or accounting system.
- File the signed form with the vendor’s record.
What a vendor ACH enrollment form includes
| Section | What the vendor fills in |
|---|---|
| Type of request | Start ACH payments, change bank details, or stop ACH payments |
| Vendor | Legal name, contact name, address, phone, email for payment notices |
| Bank account | Bank name, routing number, account number, checking or savings |
| Voided check or bank letter | An optional attachment that helps you read the numbers correctly |
| Authorization | Permission to pay by ACH, and to correct a payment sent in error |
| Signature | Authorized signer’s signature, printed name and title, and the date |
Nacha rules do not set a form for payments into an account, so the sentences on this form are common practice. One sentence is different: the vendor agrees to be bound by the Nacha Operating Rules. The rules ask for that agreement between two businesses.
No rule requires a voided check. It is a common way to make sure the routing and account numbers are copied correctly.
A change of bank details is the risky moment
Most vendor payment fraud starts with a message that says “our bank details have changed”. The form has a “change bank details” box so that every change arrives on a signed form. Treat a change with more care than a new enrollment: call a number you already have, and wait for the vendor to confirm.
If your bank later sends you a correction to a vendor’s details, it arrives as a Notification of Change. Look the code up in the NOC codes list and update your records.
Common mistakes and how to fix them
- Acting on an emailed form without a call. Always confirm with a phone number you already had.
- Typing the numbers in wrong. Use the routing number checker and read the account number back to the vendor.
- Paying a savings account as checking. Record the account type from the form. A wrong type can cause a return or a correction notice.
- Keeping forms in email. A completed form holds bank details. Store it where only your accounts payable team can open it.
Sample vendor ACH form (filled in)
This is what the form looks like once it is filled in. Yours will show your own business name.
Vendor ACH Enrollment Form
Please check the details below, then sign and return this form to Maple Street Fitness.
Vendor
Bank account
Please attach a voided check, or a bank letter that shows the routing and account numbers.
Authorization
I authorize Maple Street Fitness to send payments to the bank account named on this form by ACH credit (direct deposit). If a payment is sent in error, Maple Street Fitness may correct it as allowed by the ACH rules and applicable law. This authorization stays in effect until Maple Street Fitness receives written notice from me to change or cancel it and has had a reasonable time to act on it.
I confirm that I am authorized to sign for the vendor named above and that the bank details are correct. I will tell Maple Street Fitness right away if they change. The vendor agrees to be bound by the Nacha Operating Rules for these payments.
To protect both of us from payment fraud, Maple Street Fitness may call a phone number already on file to confirm these details before the first payment or after any change.
Questions and answers
What is a vendor ACH authorization form?
A vendor ACH authorization form, also called a vendor ACH enrollment form, is the form a company sends to a supplier to collect the bank details it needs to pay that supplier by ACH. The vendor fills in its bank name, routing number, account number and account type, then signs it.
What is an ACH credit authorization form?
An ACH credit authorization form gives a payer the bank details and the permission it needs to send payments into an account by ACH. An ACH credit is a payment pushed into the receiver's account. The vendor ACH form on this page is this kind of form, for suppliers. Companies give it different names, such as an accounts payable ACH authorization form or a vendor direct deposit authorization form. To pay employees, use the direct deposit form. To take payments from a customer's account, use the ACH authorization form instead.
Who is the vendor on an ACH form?
The vendor is the business being paid. Write the vendor's legal name, as it appears on its bank account, on the "Vendor legal name" line. The company sending the form is the payer.
How do I verify vendor ACH information?
Call the vendor at a phone number you already have on file, not one from the form or the email it came in, and read the details back. Do this for every new enrollment and every change of bank details. You can also send a zero-dollar test payment called a prenote, or a small test deposit, before the first real payment.
Does a vendor have to sign an ACH form before I can pay them?
Nacha rules let a payer get a business's authorization for payments in any lawful way, and they ask the payer to get the business's agreement to be bound by the Nacha Operating Rules. A signed form covers both and gives you a record of the bank details the vendor gave you.
Can vendors fill in this form on a computer?
Yes. Download the fillable PDF and email it. The vendor can type into every field, then print and sign it or add an electronic signature. If the vendor is with you, choose Pre-filled under Form options. The vendor can then sign on your screen under "Sign on this device".
Is this the same as SF 3881, the ACH Vendor/Miscellaneous Payment Enrollment Form?
No. SF 3881 is a federal government form. It gives a federal agency your bank details, so the agency can pay you electronically. If a federal agency will pay you, ask that agency for its form. The Treasury's vendor guidance says to contact the agency that will pay you. The form on this page is for a business that collects bank details from its own suppliers.
Is there a Spanish version of the form?
Yes. Under Form options, tick "Add a Spanish version as page 2". The download then has the English form on page 1 and the same form in Spanish on page 2. The person fills in and signs only one of them.
Sources
- How ACH works (business-to-business authorization, ACH credits), Nacha
- Vendor guidance (SF 3881, the ACH Vendor/Miscellaneous Payment Enrollment Form), US Treasury, Bureau of the Fiscal Service
- Meaningful Modernization (standards for authorizations), Nacha
- Supplementing Fraud Detection Standards for WEB Debits (account validation methods), Nacha
- Watch out for common scams (call a known number to double-check), Nacha
- 2025 Internet Crime Report (business email compromise), FBI Internet Crime Complaint Center
General information, not legal or financial advice. Rules change and banks set their own requirements. Check with your bank before you act. ACH Forms is not affiliated with Nacha.