---
title: "Compare a draft bill to the last costs disclosure and any updates"
url: "https://ailawframework.com/obligations/costs-billing-and-litigation-funding/compare-a-draft-bill-to-the-last-costs-disclosure-and-any-updates"
type: "task"
site: "AI Law Framework"
id: "A42-A20260923-2"
practice_area: "Costs, billing & litigation funding"
tier: "yellow"
lawyer_review: "required"
last_reviewed: "2026-10-22"
---

# Compare a draft bill to the last costs disclosure and any updates

> Line the bill up against the disclosure and list work, rates or totals that were not disclosed or updated.

Canonical page: https://ailawframework.com/obligations/costs-billing-and-litigation-funding/compare-a-draft-bill-to-the-last-costs-disclosure-and-any-updates  
Last reviewed: 2026-10-22

Site index for agents: https://ailawframework.com/llms.txt

## Key facts

| Fact | Value |
| --- | --- |
| Practice area | [Costs, billing & litigation funding](https://ailawframework.com/obligations/costs-billing-and-litigation-funding.md) |
| Human involvement | Yellow: Lawyer and AI draft together |
| How AI is used | Line the bill up against the disclosure and list work, rates or totals that were not disclosed or updated. |
| What the lawyer must review | Confirm updates were given when the current rule required them Check for undisclosed overshoot, which can make the bill unrecoverable |
| Written for / versions | 1 jurisdiction versions below |

## Checking plan

An undisclosed overshoot can make the bill unrecoverable. Confirm updates were given when the current rule required them.

- What the AI does: Line the bill up against the disclosure and list work, rates or totals that were not disclosed or updated.
- What the lawyer does: Set the scope, verify the evidence, resolve exceptions and approve the final output for its intended use.
- Basis: Suggested checking approach based on the task guidance. Complete the assessment for the actual tool, information and jurisdiction.

## Checks the lawyer makes

1. Confirm the output against the client’s instructions and the complete relevant source material, including omissions or contradictions.
2. Verify every relied-on citation, figure and name against the source document.
3. The responsible lawyer approves the exact version before use.

## Sources

- [New Zealand Law Society: Generative AI guidance for lawyers](https://www.lawsociety.org.nz/professional-practice/rules-and-maintaining-professional-standards/generative-ai-guidance-for-lawyers/) (checked 2026-09-23)

## Forms and precedents for this task

| Form or precedent | Kind | AI level | Summary |
| --- | --- | --- | --- |
| [Engagement letter with a generative AI clause (United States)](https://ailawframework.com/precedents/costs-billing-and-litigation-funding/us-engagement-letter-generative-ai.md) | Letter | Yellow | Engagement letter stating the scope and the basis of the fee, and separating ordinary generative-AI use from any input of information relating to the representation, which needs a completed tool… |
| [Timekeeper check before billing generative AI work (United States)](https://ailawframework.com/precedents/costs-billing-and-litigation-funding/us-timekeeper-gai-billing-check.md) | Checklist | Yellow | A check a timekeeper completes before AI-assisted time or a per-use AI charge is put on a bill, so the bill reflects time actually spent and expenses the engagement allows. |
| [Worksheet comparing a draft bill with the costs disclosure](https://ailawframework.com/precedents/costs-billing-and-litigation-funding/bill-disclosure-comparison.md) | Checklist | Yellow | Internal worksheet that sets a draft bill beside the last costs estimate, later updates, uplift and AI-assisted time, before the bill is sent. |
| [Letter when a flat fee should change because a tool did the work (United States)](https://ailawframework.com/precedents/costs-billing-and-litigation-funding/us-flat-fee-change-after-gai-use.md) | Letter | Yellow | A letter telling the client that a flat fee may no longer be reasonable because a generative AI tool has reduced the work, and asking agreement to a revised amount before further work is billed that… |
| [Progress report of legal costs incurred](https://ailawframework.com/precedents/costs-billing-and-litigation-funding/progress-report-of-costs.md) | Letter | Yellow | Written report, given without charge on a reasonable request, of the legal costs incurred to date or since the last bill, with the figures taken from the ledger. |

Signed-in accounts can read the full text of each one.

## Jurisdiction versions

| Jurisdiction | Level |
| --- | --- |
| [United States](https://ailawframework.com/obligations/costs-billing-and-litigation-funding/compare-a-draft-bill-to-the-last-costs-disclosure-and-any-updates/united-states.md) | Yellow |

*Practice guidance for planning and review. Confirm current primary sources and the requirements of the actual matter. This is general information, not legal advice.*