---
title: Understand charges for additional work and external services
description: "Before requesting new work, compare it with your agreed proposal or service allowance. #### What counts as additional work? The agreed proposal defines the scope. Work or features not expressly included may need a revised quote, an additional invoice or…"
url: "https://www.infinity3.co.uk/help/understand-charges-for-additional-work-and-external-services/"
updated: "2026-10-09"
category: "Billing & Your Account"
---

# Understand charges for additional work and external services

Before requesting new work, compare it with your agreed proposal or service allowance.

#### What counts as additional work?

The agreed proposal defines the scope. Work or features not expressly included may need a revised quote, an additional invoice or a separate agreement.

For additional work above £500, Infinity3 may require a 50% upfront payment.

#### External costs

Third-party costs are excluded unless explicitly included. These can include domains, software licences, plugins, advertising, messaging or AI usage.

Third-party costs incurred on your behalf are non-refundable under the Standard Terms.

#### Ask for a clear breakdown

Before proceeding, ask:

- What work is included?
- Is the charge one-off, recurring or based on usage?
- Are any external subscriptions needed?
- Who manages renewals?
- Does this use an existing support allowance?
- What approval or initial payment is required?

For example, a new booking integration may involve both setup work and a separate provider subscription.

#### Query an unexpected item

Send the invoice reference, the line you want explained and any relevant quote or approval. Ask Infinity3 to identify the work or external service behind it.

These arrangements are covered by the [Standard Terms](https://www.infinity3.co.uk/standard-terms-conditions/). Service-specific terms and your accepted proposal also apply.