---
title: "Enabling and disabling warnings for expenses"
slug: "enabling-and-disabling-warnings-for-expenses"
description: "Turn on the rules that flag expenses for manual review in Payhawk, such as an old document date, a negative total, or a tax amount higher than the net amount."
updated: 2026-10-27T15:50:58Z
published: 2026-10-27T15:50:58Z
canonical: "payhawk.com/enabling-and-disabling-warnings-for-expenses"
---

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

# Enabling and disabling warnings for expenses

Payhawk enables you to set rules that trigger warnings for expenses if these expenses require individual attention from your Finance team, for example, if the document date is too old.

> [!WARNING]
> Expenses with warnings cannot be [reviewed in bulk](/help/reviewing-expenses) and have to be reviewed manually.

## Supported warning rules

You can set the following rules for triggering expense warnings in Payhawk:

- **Document date** - A warning will be displayed if the expense document date is too old, in the future, or after the due, payment, or service period date.
- **Tax amount** - A warning will be displayed if the tax amount of an expense is greater than its net amount.
- **Total amount** - A warning will be displayed if the total amount of an expense is negative.
- **Is edited by the employee** - A warning will be displayed for expense fields having their visibility set to **Everyone** and which has been edited by the employee.
- **Is not found in the attached document** - A warning will be displayed for expense fields whose data is automatically extracted by Payhawk's data extraction tool by default, but is not found in the expense document. These are the **Document date**, **Document number**, **Tax amount**, and **Total amount** field values.

> [!TIP]
> Any custom field that is not a predefined list is also added to the Review Assistant's selection list.

## Enabling and disabling the warning rules

To enable the warning rules for an expense:

1. Log in to the [Payhawk Web Portal](https://portal.payhawk.com).
2. Go to **Settings** > **Spend** > **Spend types** > **Review assista****nt**.
3. Switch on the toggle button for each rule you want to apply to your company expenses.

Alternatively, to disable a rule, switch off its toggle button.

![The Review assistant tab in Settings > Spend, showing the Document date warning rules with a toggle button for each rule](https://cdn.payhawk.com/Navigation%20images%20Desi_20261002/review-assistant-warnings_20261006_ai.png)

## Useful resources

- [Reviewing expenses in bulk](/help/reviewing-expenses)