Tax‑Proof Coupons for WooCommerce

Apply selected fixed-cart coupons as gross discounts across eligible WooCommerce products, including mixed tax rates.

40+ active installs

5.0

(2 ratings)

Free on WordPress.org

View on WordPress.org Support forum

Will this break my store?

What the WordPress.org registry says about keeping Tax‑Proof Coupons for WooCommerce running.

WordPress compatibility

Tested to 7.0.2

Tested against the WordPress branch in use today.

Last updated

13 days ago

At least 7.1 releases a year since launch. WordPress.org only lists versions still available for download, so the real number may be higher.

Requires PHP

7.4

Your host must be running at least this version.

Requires WordPress

6.5

Requires other plugins

woocommerce

These must be installed and active first.

Contributors

1

A single maintainer. Worth knowing if the plugin is load-bearing for your store.

40+ active installsWordPress.org reports installs in bands, not exact counts.

Maintenance & trust

Scored on how Tax‑Proof Coupons for WooCommerce is looked after — not on how many stores run it.

Well maintained

Not enough public feedback to put a confident number on this one. Little public feedback — score rests mostly on release activity. What we can see is below.

Maintenance

35 / 35

Updated 10 days ago.

WordPress compatibility

20 / 20

Tested to WP 7.0.2 (current).

Support responsiveness

Not enough data

Only 0 support thread(s) — not enough to judge.

Merchant satisfaction

11 / 15

5.0/5 across 2 rating(s).

Listing transparency

6 / 10

Provides: description, homepage

1 of 5 measures had too little evidence to score. They are left out of the total rather than counted as zero — otherwise a plugin would be marked down for being small rather than for being poorly kept.Measured 2026-08-01 from the WordPress.org plugin registry.

Ratings

5.0

2 ratings

5★2

4★0

3★0

2★0

1★0

Every rating WordPress.org holds for this plugin, not a sample. Written reviews live in the plugin's WordPress.org reviews forum.

Tax‑Proof Coupons for WooCommerce lets you define an eligible fixed-cart coupon as a gross amount: the amount your customer should actually see deducted after tax.

What does it do?

The plugin adds an Apply coupon after tax checkbox to the coupon editor. It can be enabled only for fixed-cart coupons. When the option is enabled, each part of the coupon is converted using the tax rate of the product line it discounts.

For example, a 35.00 EUR coupon reduces eligible products by 35.00 EUR including tax, within the configured currency precision. WooCommerce still stores the required net discount and tax portion internally.

This is useful when a fixed promotional value should not become larger or smaller merely because eligible products use different VAT rates or the customer’s tax location changes.

What are the limits?

Only fixed-cart coupons with Apply coupon after tax enabled are changed. For other coupon types, the option is disabled and explains why it is unavailable; those coupons keep WooCommerce’s native behavior.
The effective discount cannot exceed the value of the eligible product lines. Shipping, fees, excluded products, and other non-discountable amounts do not increase that limit.
Displayed and stored amounts follow WooCommerce’s configured currency precision and rounding.
The plugin does not choose tax rates, change product prices, replace a tax engine, or provide tax or legal advice.

Compatibility

Version 1.0.9 is tested with WordPress 7.0, WooCommerce 10.9.4, Checkout Block, High-Performance Order Storage (HPOS), Germanized 4.0.10, and Germanized Pro/StoreaBill 4.3.4. The 1.0.9 admin change does not alter the invoice or coupon calculation paths verified with finalized StoreaBill PDFs in 1.0.8. Dedicated compatibility paths exist for WPML/WooCommerce Multilingual and Germanized Pro/StoreaBill. Compatibility still depends on the versions and configuration used by the store; report reproducible conflicts through the GitHub issue tracker or WordPress.org support forum.

Why is this needed?

WooCommerce calculates fixed-cart discounts as net values before tax. If the amount entered by a shop owner is intended as a gross promotional value, its visible effect can otherwise vary with the applicable tax rate. This plugin performs the gross-to-net conversion for enabled coupons while leaving WooCommerce responsible for tax calculation.

Do I need to recreate existing coupons after updating?

No. Valid fixed-cart settings remain unchanged. If a coupon was changed to an unsupported type while an old after-tax flag remained stored, version 1.0.9 shows the option as disabled and removes that inactive flag the next time the coupon is saved.

Why is the option unavailable for my coupon?

The after-tax conversion currently supports fixed-cart coupons only. Percentage and fixed-product coupons keep WooCommerce’s native behavior. Support for fixed-product coupons requires separate per-item calculations and is tracked in GitHub issue #18 for the 1.1.0 roadmap.

What happens if the coupon is larger than the eligible products?

The discount is capped at the discountable gross value of the eligible product lines. It does not create a negative payable amount or consume shipping and fees merely to reach the configured coupon value.

Does it work with products that have different tax rates?

Yes. The plugin allocates the coupon across eligible product lines and converts each share using that line’s tax rate. The final displayed value is subject to WooCommerce currency precision and rounding.

Does the plugin change my tax rates or guarantee tax compliance?

No. WooCommerce and the store’s tax configuration determine the rates. The plugin only changes how an enabled fixed-cart coupon is converted into WooCommerce’s net discount values. Store owners remain responsible for validating their tax and invoice setup.

Plugin details

Version1.0.9

Last updated2026-07-22 3:55pm GMT

Added2025-08-11

Requires WordPress6.5

Tested up to7.0.2

Requires PHP7.4

Tags on WordPress.org

coupon

discount

tax

woocommerce

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Tax‑Proof Coupons for WooCommerce

Apply selected fixed-cart coupons as gross discounts across eligible WooCommerce products, including mixed tax rates.

40+ active installs

5.0

(2 ratings)

Free on WordPress.org

View on WordPress.org Support forum

Will this break my store?

What the WordPress.org registry says about keeping Tax‑Proof Coupons for WooCommerce running.

WordPress compatibility

Tested to 7.0.2

Tested against the WordPress branch in use today.

Last updated

13 days ago

At least 7.1 releases a year since launch. WordPress.org only lists versions still available for download, so the real number may be higher.

Requires PHP

7.4

Your host must be running at least this version.

Requires WordPress

6.5

Requires other plugins

woocommerce

These must be installed and active first.

Contributors

1

A single maintainer. Worth knowing if the plugin is load-bearing for your store.

40+ active installsWordPress.org reports installs in bands, not exact counts.

Maintenance & trust

Scored on how Tax‑Proof Coupons for WooCommerce is looked after — not on how many stores run it.

Well maintained

Not enough public feedback to put a confident number on this one. Little public feedback — score rests mostly on release activity. What we can see is below.

Maintenance

35 / 35

Updated 10 days ago.

WordPress compatibility

20 / 20

Tested to WP 7.0.2 (current).

Support responsiveness

Not enough data

Only 0 support thread(s) — not enough to judge.

Merchant satisfaction

11 / 15

5.0/5 across 2 rating(s).

Listing transparency

6 / 10

Provides: description, homepage

Ratings

5.0

2 ratings

5★2

4★0

3★0

2★0

1★0

Every rating WordPress.org holds for this plugin, not a sample. Written reviews live in the plugin's WordPress.org reviews forum.

Tax‑Proof Coupons for WooCommerce lets you define an eligible fixed-cart coupon as a gross amount: the amount your customer should actually see deducted after tax.