---
title: "Can't add a discount directly to a purchase order"
slug: "adding-a-discount-to-a-purchase-order"
updated: 2026-10-15T00:50:12Z
published: 2026-10-15T00:50:12Z
canonical: "help.servicetitan.com/adding-a-discount-to-a-purchase-order"
---

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

# Can't add a discount directly to a purchase order

![](https://cdn.document360.io/961862ab-d0f2-4d91-bb62-a62ee8184eff/Images/Documentation/anvil-wrench.png?sv=2026-02-06&spr=https&st=2026-10-31T01%3A36%3A48Z&se=2026-10-31T02%3A36%3A48Z&sr=c&sp=r&sig=Fmn84w7XSVMedtFv50QW05Cg1sFeHHw27CR1vYUYw%2BY%3D) Troubleshooting **Role:** Managers · Office employees · Accountants**Area:** Purchasing · Purchase Orders · Payables · All business types · All versions

## **What you're seeing**

You want to apply a discount to a purchase order, such as a discount from your supply house, but ServiceTitan won't let you add a negative amount or a discount line directly to the PO.

## **Why this happens**

**Reason 1**

**A purchase order doesn't support negative or discount line amounts directly.** The PO records the items and their expected cost; the discount is captured downstream on the bill, which is the actual financial document.

## **What you can do instead**

### **1****Apply the discount on the bill**

Apply the discount on the bill that's generated when you receive the purchase order.

1. Receive the purchase order to confirm receipt of the items listed.
2. After you receive the PO, a bill populates. Go to that bill.
3. Adjust the item prices to reflect the discount. This means you manually reduce the item prices by the discount amount.
4. Double-check the adjusted prices and the bill total, then save the bill.

> [!NOTE]
> **✓ Done ·** The bill reflects the discounted amount, so your costs account for the supply-house discount without changing the purchase order itself.

## **Still not working?**

If you can't get the discount to reflect correctly, contact ServiceTitan Technical Support at [**go.servicetitan.com/ask**](https://go.servicetitan.com/ask) with:

- The purchase order number and the associated bill number
- The vendor and the discount amount you're trying to apply
- Whether Payables is enabled on your account
- What you've tried so far (item price adjustment, footer discount field)

## **Want to learn more?**

[**Discount doesn't appear on a counter sale invoice ›**](https://help.servicetitan.com/construction/docs/discount-not-appear-when-adding-discount-item-to-invoice) Troubleshoot a discount item that isn't showing on a counter sale invoice.

[**Create bills for purchase orders ›**](https://help.servicetitan.com/construction/docs/create-bills-for-purchase-orders) Learn how bills are generated from purchase orders when items are received.