---
title: Fix Discount Plugin Conflicts With Quantity Pricing
description: WooCommerce quantity discounts stacking with coupons, sales or other discount plugins? Stop stacking and isolate conflicts.
url: "https://wpfactory.com/docs/fix-discount-plugin-conflicts/"
updated: "2026-09-26"
category: Troubleshooting
---

# Fix Discount Plugin Conflicts With Quantity Pricing

## Fix conflicts between quantity pricing and other discounts

If quantity discounts from Price by Quantity & Bulk Quantity Discounts for WooCommerce stack with coupons or other discounts, go to WPFactory > Product Price by Quantity and, on the General tab, enable Other cart discounts. The quantity discount is then skipped for any cart that already has a coupon or another discount applied.

### Symptoms

- Two discounts apply, so the total is lower than expected.
- The quantity discount is ignored or replaced by another discount.
- Discounts appear to apply in the wrong order.

### Cause

Several tools can filter the WooCommerce product price at once. Price by Quantity sets its price through `woocommerce_product_get_price` at the highest priority, so it usually applies last, but another plugin, a coupon, or theme code may still change the final figure.

### Fix: stop quantity discounts from stacking

1. Go to **WPFactory > Product Price by Quantity** (also reachable at **WooCommerce > Settings > Product Price by Quantity**).
2. On the **General** tab, enable **Other cart discounts** (`alg_wc_wholesale_pricing_apply_only_if_no_other_discounts`).
3. Save. The quantity discount is now skipped for any cart that already has a coupon or another discount applied, so the two never stack.

### Isolate a plugin conflict

1. Note every active plugin that touches pricing, discounts, or coupons.
2. On a staging site, switch to a default theme (such as Storefront) and deactivate everything except WooCommerce and Price by Quantity, then retest.
3. Reactivate the other plugins one at a time to find which one changes the price.

### Developer note

Price by Quantity already hooks `woocommerce_product_get_price` and `woocommerce_product_variation_get_price` at `PHP_INT_MAX`, so it runs after most other handlers. If another plugin still wins, adjust that plugin's own price filter priority rather than the WooCommerce core hook, and test on staging.

### Still stuck?

Send your WooCommerce system status and a list of active plugins to our team on the [Price by Quantity support forum](https://wpfactory.com/support/item/product-price-by-quantity-for-woocommerce/).

Related articles

- [Fix Per-Tag and Per-Product Discount Display Issues](https://wpfactory.com/docs/fix-per-product-discounts/)
- [Fix Price-by-Quantity Decimal and Separator Issues](https://wpfactory.com/docs/fix-price-by-quantity-separators/)
- [Fix Pricing Table Not Rendering in Custom Templates](https://wpfactory.com/docs/fix-pricing-table-rendering/)
- [Fix Price-by-Quantity Table Display Issues](https://wpfactory.com/docs/fix-price-by-quantity-table/)
- [Quantity Discounts by Product Category and Tag](https://wpfactory.com/docs/woocommerce-quantity-discounts-by-category-and-tag/)