---
title: How can I add complex tax to my form? | Paperform Help Center | Paperform
description: You can use custom pricing rules to conditionally add complex tax to your forms.
url: "https://paperform.co/help/articles/how-can-i-add-complex-tax-to-my-form"
type: static
generatedAt: "2026-04-04T00:42:01.571Z"
---

How can I add complex tax to my form?
### Payments

You can add more complex tax on your forms by using custom pricing rules to modify the form total depending on the answers to certain questions.

## Setup

 1. Add some questions to your form which will trigger the custom pricing rule. For this example, we will charge tax depending on the "Billing Country" selected.

![](https://img.paperform.co/fetch/f_auto,w_1400/https://d3gw2uv1ch7vdq.cloudfront.net/img/custom-pricing-tax.png)

 1. Go to Configure → Payments → Custom Pricing rules and click "Add a rule" to add a new custom pricing rule.

![Custom pricing rules setup](https://img.paperform.co/fetch/f_auto,w_1400/https://d3gw2uv1ch7vdq.cloudfront.net/img/custom-pricing-setup.png)

 1. Select the question you will use to trigger the custom pricing rule and create a rule to modify the total as required.

For example, we might add a 10% tax if the billing country is Australia, where 100% (original price) + 10% (tax) equals 110%, or 1.1 in decimal form, which is what we multiply the form's total by in the rule.

![Custom pricing rule 1](https://img.paperform.co/fetch/f_auto,w_1400/https://d3gw2uv1ch7vdq.cloudfront.net/img/custom-pricing-tax-2.png)

 1. Add any other required pricing rules.

For example, we might want to add a 20% tax if the billing country is instead the United Kingdom.

![Custom pricing rule 2](https://img.paperform.co/fetch/f_auto,w_1400/https://d3gw2uv1ch7vdq.cloudfront.net/img/custom-pricing-tax-3.png)

### Label

You can also set a label to describe the custom pricing rule in the checkout.

![Custom pricing checkout label](https://img.paperform.co/fetch/f_auto,w_1400/https://d3gw2uv1ch7vdq.cloudfront.net/img/complex-tax-checkout-label.png)

**You may only use a single label for adjustments made by all rules combined.**

## **Gotchas**

 - Custom pricing rules are applied in order so if two rules are in effect at the same time the lower one will affect the rules above it.

### Related Articles
  [How do I set up Custom Pricing Rules?  Need to create pricing dependant upon your customers needs? Offering services that need to have fees built in? We’ve got you covered with Custom Pricing Rules.](/help/articles/custom-pricing-rules/)
[How do I add sales tax to payments?  Paperform provides a way to specify an additional tax rate to be added to the total price on a form. This tax is represented in the payment summary and in any Paperform-generated receipts.](/help/articles/how-to-add-a-sales-tax-to-payments/)
[How do I charge my customers fees/taxes on my form?  You can add fees or taxes to your form by navigating to Payments in the form editor and setting a value for Payment tax percentage or by using Custom Pricing Rules.](/help/articles/charge-customers-fees-taxes/)