# Invoice Adjustment Types
Similar to Price Adjustments, Invoice Adjustment Types allow you to apply adjustments to an invoice on the Invoice/Payment Query. You will need to create the Adjustment type before it can be applied to an invoice.
In the Billing menu, adjustments can be applied on the [Invoice/Payment Query](/fast-weigh-knowledge-base/references/web-portal/billing-ar/invoice-payment-query.md) by clicking the More button, and selecting the desired adjustment from the drop down menu. If you have common values that you need applied, you can create a few "default" options to adjust invoices. These can be payment fees, late fees, or other miscellaneous fees added or subtracted from the invoices.
In the below example, a 2% discount was created to be applied to the material rate on an invoice.
### Late Fee Adjustment Type
The Late Fee adjustment type works a bit differently than the rest as it only applies automatically, rather than having the ability to manually apply it to an invoice.
Late fees are able to be set up so they will automatically apply to a customer's invoice after a set amount of time has passed.
This time begins calculating once the invoice is created.
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The calculation is:
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**Pay Terms** amount + **Grace Days** amount = First application of late fee to an invoice.
***Important Note:***\
***Late Fees are NOT retroactive. They will only apply to invoices created AFTER the Late Fee is assigned to the Customer in the Web Portal.***
Example Late Fee configuration.
* **Name:** Name of the Adjustment/Fee
* **Type:** Set to **Late Fee**
* **Charge By:** Can be set to a percentage or flat amount charge.
* **Rate:** Monetary amount being charged as a percentage in Decimal or flat monetary amount.
* **Tax By:** For the **Late Fee** type, this is recommended to be set to **Exempt.**
* **Frequency:** The rate at which the **Late Fee** is applied AFTER the first time it is triggered.
* For example: If this is set to **Weekly**, then the late fee will apply every week that passes starting when the first late fee gets added to the invoice.
* **Grace Days:** Amount of days **AFTER** your **Pay Terms** that the fee will apply.
### Assigning Late Fee to Customer
After creating the Late Fee, it must then be applied to the Customer account.
1. Navigate to **Resources -> Customers**.
2. Select **Edit** on the Customer you wish to assign the Late Fee to.
3. There will be a drop-down selection option for Late Fee that will list your created Late Fees so they can be applied.
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