---
title: "Create and post an AP invoice for an ACH vendor payment (PAS)"
slug: "create-and-post-an-ap-invoice-for-a-vendor-payment-pas"
updated: 2026-07-24T21:36:23Z
published: 2026-07-24T19:25:02Z
canonical: "help.wrapbook.com/create-and-post-an-ap-invoice-for-a-vendor-payment-pas"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.wrapbook.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Create and post an AP invoice for an ACH vendor payment (PAS)

> [!NOTE]
> Using NACHA files instead?
> 
> - This article is for companies using *Vendor Payments* — where Wrapbook sends ACH transfers directly on your behalf. No file download or bank upload is required.
> - If your company uses NACHA file-based ACH (where you generate a payment file in Wrapbook and upload it to your bank), see [ACH bank transfer for paying AP invoices (PAS)](/v1/docs/ach-bank-transfers) instead.

## **Before you begin**

Before you can create and post AP invoices for *Vendor Payments* in Wrapbook:

- Your company must have Wrapbook's [Production Accounting Suite (PAS)](/v1/docs/about-production-accounting) enabled
- The *Vendor Payments* feature specifically must be enabled for your company by Wrapbook
- Your *Vendor Payments* settings have been [configured](/v1/docs/ach-vendor-payments-setup-guide)

## **Required permissions**

Access to *Vendor Payments* in Wrapbook is [permission based](/v1/docs/roles-permissions). In order to use this feature you'll need to be assigned one of the following roles:

| **Role** | **What this role can do** |
| --- | --- |
| **Company Admin** | Complete KYC, enable bank accounts at the company level, create approval workflows |
| Assigned **Project Coordinator** or **Project Assistant** | Add bank accounts at the project level, add vendor banking info, create invoices, process payments |

## **Add an AP invoice for a vendor payment**

1. On the project's [Accounts payable dashboard](/v1/docs/about-ap-invoices-pas#access-the-accounts-payable-dashboard), click the **+ Create AP invoice** button
2. In the **Add invoice** pop-up, choose one of the following:
  - Email or forward the invoice to your auto-fill [AP Inbox](/v1/docs/create-an-ap-invoice-pas#uploading-invoices-to-the-ap-inbox)
  - [Upload](/v1/docs/create-an-ap-invoice-pas#uploading-invoices-to-the-ap-inbox) a copy of the invoice
  - Click [create the invoice manually](/v1/docs/create-an-ap-invoice-pas#creating-an-ap-invoice)
3. On the [AP transaction page](/v1/docs/about-ap-invoices-pas#overview-of-the-accounts-payable-workflow-in-wrapbook-pas), enter or confirm the following information:
  - *Vendor*
  - *Invoice #*
  - *Invoice amount*
  - *Description*
  - *Period*
  - *State worked*
4. Click the dropdown menu under *Accounting bank to* select your [ACH-enabled bank account](/v1/docs/ach-vendor-payments-setup-guide#step-3-enable-a-bank-account-at-the-company-level)
5. Click the dropdown menu under *Payment type* to select **ACH**
6. Leave the *Payment #* and *Payment date* fields blank
7. Click the **Save** button at the top of the page to save the draft
8. Under *Invoice summary*, add your line items (or verify any [AI-entered lines](/v1/docs/create-an-ap-invoice-pas#reviewing-invoices-in-the-ap-inbox)). Make sure the total amount of your line items matches the invoice *Amount* at the top of the page. Link any applicable [purchase orders](/v1/docs/add-a-purchase-order-pas#create-a-purchase-order-from-an-ap-invoice-pas)
9. Click the **Save** button to save the unposted AP invoice
10. [Post the AP invoice](/v1/docs/post-ap-transactions-pas#how-to-post-ap-transactions-to-the-gl)

**Can I update the payment method after** **posting****?**

- **Yes** — you can update the bank account and payment method while the invoice is in *Posted but unpaid* status
- If the invoice is already included in a draft payment batch, delete the draft batch first to move the invoice back to *Posted & unpaid*

**Tip:**

- The optional [AP invoice approval workflow](/v1/docs/ap-invoice-approvals-pas) allows you to collect invoice approvals in Wrapbook

(Automatic Clearing House) An electronic payment form that is usually provided for free by the bank. Wire transfers are generally not free.

(Accounts Payable) Cash disbursements through the payment of vendor invoices and other payables

Know Your Customer

Recording entries to the general ledger in the computer accounting system.